CN103900666B - The measuring accuracy control method of diaphragm gas meter longtime running - Google Patents
The measuring accuracy control method of diaphragm gas meter longtime running Download PDFInfo
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Abstract
The invention discloses a kind of measuring accuracy control method that ensure that the diaphragm gas meter longtime running of measuring accuracy after gas meter, flow meter longtime running.The method is comprised the following steps：A, first selection are tested the testing location of diaphragm gas meter and get out test device, choose and are test for diaphragm gas meter；B, the error of indication of the diaphragm gas meter of test, obtain curve of error；During the complete different running-in amounts of C, diaphragm gas meter running-in, repeat step B obtains the curve of error of different running-in amounts；D, the curve of error by the diaphragm gas meter that obtains in step B and C under different running-in amounts obtain the aging curve of diaphragm gas meter；E, compensation of ageing module is set on diaphragm gas meter, F, aging curve is entered into compensation of ageing module, combustion gas meter reading is modified by compensation of ageing module.It is able to ensure that gas meter, flow meter is accurate using reading after the long period using the method, extends the service life of gas meter, flow meter, reduce the use cost of gas meter, flow meter.
Description
Technical field
The present invention relates to a kind of method of control diaphragm gas meter certainty of measurement, especially a kind of diaphragm gas meter are transported for a long time
Capable measuring accuracy control method.
Background technology
Known：At present, use of the pipe gas as clean energy resource widely, diaphragm gas meter as pipe
A kind of very important measuring instrument of road combustion gas trade settlement, its metering performance index are undoubtedly very crucial, especially for a long time
Measuring accuracy during operation.Newest national standard " diaphragm gas meter " GB/T6968 2011 and the inspection of diaphragm gas meter country
Set pattern journey JJG577-2012 regulation, measuring accuracy such as following table of the diaphragm gas meter when calibrating is dispatched from the factory：
| Index Content | Unit | Index |
| Error in dipping qmin≤q≤0.1qmax | % | ≤±3 |
| Error in dipping 0.1qmax≤q≤qmax | % | ≤±1.5 |
To using in and finishing the diaphragm gas meter measuring accuracy index after endurancing and providing as follows table：
| Index Content | Unit | Index |
| Error in dipping qmin≤q≤0.1qmax | % | ≤±6 |
| Error in dipping 0.1qmax≤q≤qmax | % | ≤±3 |
Due to the product inherent character of diaphragm gas meter, there is when dispatching from the factory calibrating gauging of products precision preferably, but start to make
With rear, the practical situation that its measuring accuracy declines rapidly.Can see from above table, produce in the national diaphragm gas meter that works out
The performance practical situation of current diaphragm gas meter is take into account when product standard and inspection procedure, so the membrane type after to beginning to use
Gas meter, flow meter measuring accuracy fall has made above agreement.To two above tabular analysis, it is not difficult to find out, error in dipping changes
Maximum permissible value（qmin≤ q 0.1qmax）For 9%, error in dipping changes maximum permissible value (0.1qmax≤q≤qmax) it is 4.5%.
The amplitude that this measuring accuracy declines is very big, and the measurement shoutage of gas company is bought combustion gas and sells combustion gas tolerance difference
Exist always, gas output is generally sold less than buying tolerance value.At present, domestic larger gas company's natural gas is defeated
6%～7%, what management level were higher can control 5% or so, due to protoplast's work gas supply system rate general control
Transportation difference rate is larger, and with reference to using the actual average transportation difference rate in natural gas area, by the normal transportation difference rate natural gas of production and operation
Convey the normal loss for existing to calculate by urban gas pipe network, it is proposed that transportation difference rate control targe can be set to 5% by Natural Gas Enterprises
～6%.Measurement shoutage is insoluble problem for each gas company, and the size of measurement shoutage is often as evaluation and measurement
The important technology economic indicator of gas company's operation and management level.Height of the magnitude relationship of measurement shoutage to production cost, directly
The economic benefit of gas company is affected, is related to developing direction and the investment decision of gas company.
Had at present the number of patent application that declares for 201320629885.2 utility model patent provide a kind of electric
The diaphragm gas meter that son shows, the patent provide a kind of with electronic counter replacing the intelligent diaphragm gas of mechanical counter
Table.Its technical scheme that invents is, in the upper and lower casing of common diaphragm gas meter, assembles core of membrane type gas meter metering group
Part, is equipped with magnetic conductivity travelling gear and sampling sensor on movement gauge assembly, when movement metering is rotated, sampling sensing
Device is collected and represents a determination combustion gas bulking value periodic pulse signal, and periodic pulse signal is passed to master control borad by sampling sensor
Show in LCD MODULE after being calculated.The bulking value of display or number of pulses and standard scale bulking value are compared,
The error in dipping value of diaphragm gas meter is obtained, after correcting by correction coefficient, the error in dipping of diaphragm gas meter in theory may be used
To be close to 0, due to the error in dipping value difference of each flow point itself of diaphragm gas meter, through the correction of multiple flow points,
The metering curve of diaphragm gas meter can be adjusted to perfect condition in the measures range of diaphragm gas meter, above each is put
To the correction coefficient smooth curve curve that obtains of connection can be understood as adjustment in accuracy curve.The content of the invention solves membrane type
The not high problem of gas meter, flow meter measuring accuracy, but still do not solve the problems, such as longtime running precise decreasing.Due to diaphragm gas meter
The frame for movement of longtime running its Internal Gauge causes metric results precision low due to abrasion, produces negative value error, error with
The prolongation of use time can be increasing, so as to bring economic loss.Therefore the useful life of diaphragm gas meter is shorter, to membrane type
Gas meter, flow meter is frequently changed and the use cost of diaphragm gas meter can be caused to increase.
Content of the invention
The technical problem to be solved is to provide one kind and ensure that metering essence after diaphragm gas meter longtime running
The measuring accuracy control method of the diaphragm gas meter longtime running of degree.
The technical solution adopted for the present invention to solve the technical problems is：By the membrane type combustion to batch steady production of shaping
Gas meter is sampled, continuous testing results error of indication situation of change, then through statistical analysiss, obtains the diaphragm gas meter of sampling model
The corresponding error of indication aging curve of the statistics actual life of overall sample.Then main control module will be set on diaphragm gas meter,
It is designed to a kind of electronic type diaphragm gas meter.Aging curve obtained above write is developed based on above model diaphragm gas meter
Electronic gas table main control module on compensation of ageing module, by compensation of ageing module to common diaphragm gas meter indicating value
Error result is modified, it is ensured that gas meter, flow meter longtime running precision reaches perfect condition.
It is pure mechanic structure based on diaphragm gas meter using above method to be, due to identical machine construction principle, sizing
Product material afterwards has the consistent characteristic of height, and in non-design for change and parts, product possesses high consistency
Meter characteristic.Therefore the aging curve data that can be gone out by sample testing can be used as the general aging essence of approved product
Degree characteristic.The parameter can be as the foundation of electronic compensation, so as to improve gas meter, flow meter measuring accuracy.
The membrane type of compensation is realized for the measure of the general aging curve parameter of certain fixing model gas meter, flow meter and using the parameter
The measuring accuracy control method of gas meter, flow meter longtime running, comprises the following steps：
A, sizing batch production diaphragm gas meter through dispatching from the factory error in dipping test after enter storehouse product in, with
Machine chooses one group as being test for diaphragm gas meter；Select the testing location of test diaphragm gas meter and get out test dress
Put, the test device includes that compressed air source unit and standard set-up, the environment of testing location must fully meet JJG577-2012 marks
Accurate regulation；I.e. atmospheric pressure is 86～106kPa, and temperature is 20 ± 2 DEG C, and relative humidity is 45%～75%, at standard set-up
Temperature difference at temperature and diaphragm gas meter is less than 1 DEG C；
B, a certain amount of gas is passed sequentially through standard set-up in the different flow point for being test for diaphragm gas meter respectively
And diaphragm gas meter, the actual volume value for obtaining gas is measured at standard set-up, at diaphragm gas meter obtains gas volume
Metering numerical value, by the actual volume value of gas and the metering numerical value of diaphragm gas meter calculate single diaphragm gas meter per
The error of indication of individual flow point；All diaphragm gas meters are calculated once in the flow point in each flow point of diaphragm gas meter
The meansigma methodss of the error of indication, are obtained the average error of indication of all diaphragm gas meters at each flow point, are fired by all membrane types
Gas meter obtains the curve of error of diaphragm gas meter in the average error of indication of each flow point；The curve of error refers to membrane type
The gas meter, flow meter full curve that the corresponding average error of indication is formed in coordinate system in different flow point；
C, when the complete different running-in amounts of diaphragm gas meter running-in are test for, repeat step B obtains diaphragm gas meter complete
During into different running-in amounts, single diaphragm gas meter different flow point the error of indication and all diaphragm gas meters each flow
The corresponding average error of indication at amount point；Mistake of the diaphragm gas meter when different running-in amounts are completed is obtained by the average error of indication
Difference curve；
The error of the diaphragm gas meter of D, the diaphragm gas meter obtained in step B and C after different running-in amounts are completed
Curve, obtains aging curve of the diaphragm gas meter when different running-in amounts are completed, and the aging curve refers to that diaphragm gas meter exists
When completing certain running-in amount, on curve of error, the average error of indication of different flow point is missed relative to corresponding original average indicating value
The line curve that poor side-play amount is formed in coordinate system；The original average error of indication refers to the membrane type combustion for not carrying out running-in
The average error of indication of gas meter；
E, on diaphragm gas meter arrange main control module, be provided with compensation of ageing module, electronic display on the main control module
Show module and power supply；
F, by the curve of error for obtaining and aging curve in the different running-in amounts of diaphragm gas meter and the corresponding compensation of flow point
In the compensation of ageing module of parameter typing main control module, in the complete different running-in amounts of diaphragm gas meter running-in and in different flow
During point, the compensation that the corresponding error of indication is carried out by compensation of ageing module to the stoichiometric number of diaphragm gas meter so that diaphragm gas
The stoichiometric number of table is identical with gas actual volume；Then shown by electronic display module.
Preferably, the curve of error for testing diaphragm gas meter in step B adopts following steps：
B1, the temperature that the diaphragm gas meter of tested person is stabilized to testing location constant temperature more than four hours；
The diaphragm gas meter of tested person is no less than 50 times of revolving bodies with maximum stream flow operation by B2, before testing begins
Long-pending test air；
B3, diaphragm gas meter flow be respectively qmin, 3qmin, qt, 0.2qmax, 0.4qmax, 0.7qmax and
The flow point of qmax will measure the diaphragm gas meter of the air stream through tested person of a certain amount of volume for obtaining actual volume, recording film
The volume that the enumerator of formula gas meter, flow meter shows；Each diaphragm gas meter is carried out 6 times respectively in different flow point, and guarantees survey every time
Examination flow is different, i.e., carry out follow-on test not in same traffic point with identical total flow；The temperature of the air and survey
The temperature in examination place is identical；Wherein qmin represents that minimum discharge, qt represent that metered flow, qmax represent maximum stream flow；
B4, the error of indication for being averagely worth to each flow point for calculating each 6 test result of flow point respectively；In quilt
The all diaphragm gas meters error of indication in same flow point is calculated at each flow point of the diaphragm gas meter of test respectively
Meansigma methodss, are obtained the corresponding average error of indication at all diaphragm gas meters each flow points, are obtained by the average error of indication
The curve of error of diaphragm gas meter.
Preferably, calculate the error of indication to calculate using below equation in step B：
In formula：The error of indication of E single measurements, unit are %；VmThe indicating value of diaphragm gas meter, unit are dm3；
VrefBy the gas actual value of diaphragm gas meter, unit is dm3；
Temperature, pressure at the entrance point and standard set-up of measurement diaphragm gas meter, enters trip temperature, pressure as follows
Revise；In formula：VSThe indicating value of standard set-up, unit are dm3；PsaAbsolute pressure at standard set-up
Power, unit are Pa；TSaThermodynamic temperature at standard set-up, unit are K；PmaThe absolute pressure of diaphragm gas meter entrance point
Power, unit are Pa；TmaThe thermodynamic temperature of diaphragm gas meter entrance point, unit are K.
Preferably, described in step randomly select the method for being test for diaphragm gas meter using randomly selecting, at random
Number is produced by methods such as the table of random numbers, dice or playing card.
Preferably, the test device described in step A includes compressed air source unit, standard set-up, flow control valve；The source of the gas
Sequentially pipe connects for device, standard set-up, diaphragm gas meter, and the outlet of diaphragm gas meter is provided with flow control valve.
Further, temperature sensor, pressure transducer, collection are provided between the diaphragm gas meter and main control module
Transport module and valve, are provided with wireless remote transmission module, amount of money pre-payment/amount of money payment module, double interfaces on main control module
The intelligent objects such as data storage interactive module, electronic seal module.
The invention has the beneficial effects as follows：The invention provides a kind of measuring accuracy controlling party of diaphragm gas meter longtime running
Method, common diaphragm gas meter are counted to gas volume using mechanical mechanism, diaphragm gas during long-term use
Table causes the reading generation negative value error and error of diaphragm gas meter to become greatly due to mechanical wear, therefore leads to not accurate recording
Gas quantity, the transportation difference rate of combustion gas are larger, so as to cause economic loss；It is able to ensure that diaphragm gas meter using longer using the method
After time, reading is accurate, reduces transportation difference rate, extends the service life of diaphragm gas meter, reduce the use of diaphragm gas meter into
This, it is to avoid change the waste that diaphragm gas meter is caused.
Description of the drawings
Fig. 1 is diaphragm gas meter illustrative view of functional configuration in the embodiment of the present invention；
Fig. 2 is test device structural representation in the embodiment of the present invention；
Fig. 3 is the error curve diagram of the embodiment of the present invention；
Fig. 4 is the aging curve figure of the embodiment of the present invention.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
The measuring accuracy control method of diaphragm gas meter longtime running, comprises the following steps：
A, sizing batch production diaphragm gas meter 3 through dispatching from the factory error in dipping test after enter storehouse product in,
One group is randomly selected as being test for diaphragm gas meter 3；Select the testing location of test diaphragm gas meter 3 and be ready to survey
Trial assembly is put, and the test device includes compressed air source unit 1 and standard set-up 2；The environment of testing location must fully meet JJG577-
The regulation of 2012 standards；I.e. atmospheric pressure is 86～106kPa, and temperature is 20 ± 2 DEG C, and relative humidity is 45%～75%, and standard is filled
Put place temperature and diaphragm gas meter at temperature difference be less than 1 DEG C；
B, a certain amount of gas is passed sequentially through standard set-up in the different flow point for being test for diaphragm gas meter 3 respectively
2 and diaphragm gas meter 3, measurement at the standard set-up 2 obtains the actual volume value of gas, at diaphragm gas meter 3 obtains gas
The metering numerical value of volume, calculates single diaphragm gas by the actual volume value of gas and the metering numerical value of diaphragm gas meter 3
The error of indication of the table 3 in each flow point；All diaphragm gas meters 3 are calculated once in each flow point of diaphragm gas meter 3
In the meansigma methodss of the flow point error of indication, the average error of indication of all diaphragm gas meters 3 at each flow point is obtained, is passed through
All diaphragm gas meters 3 obtain the curve of error of diaphragm gas meter 3 in the average error of indication of each flow point；The error
Curve refers to the full curve that the corresponding average error of indication is formed in coordinate system in different flow point of diaphragm gas meter 3；
C, when the complete different running-in amounts of 3 running-in of diaphragm gas meter are test for, repeat step B obtains diaphragm gas meter 3 and exists
When completing different running-in amounts, single diaphragm gas meter 3 different flow point the error of indication and all diaphragm gas meters 3 per
The corresponding average error of indication at individual flow point；Diaphragm gas meter 3 is obtained by the average error of indication and completes different running-in amounts
When curve of error；
The mistake of the diaphragm gas meter 3 of D, the diaphragm gas meter 3 obtained in step B and C after different running-in amounts are completed
Difference curve, obtains aging curve of the diaphragm gas meter 3 when different running-in amounts are completed, and the aging curve refers to diaphragm gas meter
3 when certain running-in amount is completed, and on curve of error, the average error of indication of different flow point original is averagely shown relative to corresponding
The line curve that the side-play amount of value error is formed in coordinate system；The original average error of indication refers to the film for not carrying out running-in
The average error of indication of formula gas meter, flow meter 3；
E, on diaphragm gas meter 3 arrange main control module, be provided with compensation of ageing module, electronic display on the main control module
Show module and power supply；
F, by the curve of error for obtaining and aging curve in 3 different running-in amounts of diaphragm gas meter and the corresponding compensation of flow point
In the compensation of ageing module of parameter typing main control module, in the complete different running-in amounts of 3 running-in of diaphragm gas meter and in not cocurrent flow
During amount point, the compensation that the corresponding error of indication is carried out by compensation of ageing module to the stoichiometric number of diaphragm gas meter 3 so that membrane type fires
The stoichiometric number of gas meter 3 is identical with gas actual volume；Then shown by electronic display module.
In step the testing location of diaphragm gas meter 3 is chosen, testing location must fully meet
The regulation of JJG577-2012 standards；I.e. atmospheric pressure be 86～106kPa, temperature be 20 ± 2 DEG C, relative humidity be 45%～
75%, the temperature at standard set-up 2 and the temperature difference at diaphragm gas meter 3 are less than 1 DEG C.So as to ensure that diaphragm gas meter 3
It is operated under standard state；The factors such as temperature and pressure are avoided to affect test result；The reasonability that guarantees to measure, accurately
Property.Measurement apparatus have selected simultaneously, the actual volume for measuring original test gas by measurement apparatus.In sizing batch production
In the product that diaphragm gas meter 3 enters storehouse after error in dipping test of dispatching from the factory, one group is randomly selected as being test for film
Formula gas meter, flow meter 3；Randomly selecting can be so that chosen be test for that gas meter, flow meter 3 is representative, the membrane type of batch production of shaping
Gas meter, flow meter 3 ensures that the performance parameter of all diaphragm gas meters 3 is basically identical.The standard set-up 2 is to refer to accurately measure
The standard scale of test gas volume or gas volume measurement apparatus.
Temperature and pressure parameter is delivered to by master control mould by the temperature sensor on diaphragm gas meter 3, pressure transducer
Block 1, by compensation of the main control module 1 to temperature and pressure parameter, it is ensured that no matter diaphragm gas meter 3 is placed on extraneous any ring
In border, the use state of diaphragm gas meter 3 is under standard state all the time.The diaphragm gas meter 3 carries out running-in and refers to that membrane type fires
3 pairs of gas volumes through diaphragm gas meter 3 of gas meter are measured.
Diaphragm gas meter 3 error of indication and all membrane type combustion in its each different flow point are tested in stepb
The corresponding average error of indication at each flow point of gas meter 3；Shown by the average error of indication and can obtain diaphragm gas meter 3
Curve of error.With flow point as X-coordinate, the average error of indication is Y-coordinate, can be obtained by trace-point method in plane coordinate system
The curve of error of diaphragm gas meter 3.The error of indication refer to the metering numerical value of test gas deduct after actual volume value divided by
The percent of actual volume value.Minimum ventilation when the error of indication is tested should be able to meet the requirement of accurate measurement, it is recommended that many
In 200 times of 3 minimum division value of diaphragm gas meter, and be typically no less than calibrating flow lower 1 minute corresponding to volume, to the greatest extent may be used
3 minimum bit character wheel of diaphragm gas meter can be made to rotate one enclose or a few, to reduce periodically variable impact.Inspection to lower-capacity point
Fixed, ventilation can be suitably reduced on the premise of it can meet accurate measurement.
Diaphragm gas meter 3 to completing different running-in amounts in step C carries out the test of the error of indication, is missed by indicating value
Difference obtains curve of error of the diaphragm gas meter 3 after the complete different running-in amounts of running-in so that the whole error of indication is continuous.Described race
Resultant is referred to from the beginning of counting from diaphragm gas meter 3, by the total amount of 3 gas volume of diaphragm gas meter.
Different running-in amounts are completed according to all tested diaphragm gas meter 3 obtained in step B and step C in step D
When curve of error obtain aging curve of the diaphragm gas meter 3 in the complete different running-in amounts of running-in.Run by diaphragm gas meter 3
Aging curve when having closed different running-in amounts can carry out mathematical modeling to which, find diaphragm gas under each running-in amount state
Relation between the aging curve of table 3.So that diaphragm gas meter 3 can find under each running-in amount state one right therewith
The aging curve that answers.With flow point as X-coordinate, with the average error of indication of different flow point on curve of error relative to corresponding
The side-play amount of the original average error of indication is Y-coordinate, obtains the aging curve of diaphragm gas meter 3 in plane coordinate system.Described
Aging curve refers to diaphragm gas meter 3 when certain running-in amount is completed, the average error of indication of different flow point on curve of error
Relative to the line curve that the side-play amount of the corresponding original average error of indication is formed in coordinate system；The original average indicating value
Error refers to the average error of indication of the diaphragm gas meter 3 for not carrying out running-in.Point i.e. on aging curve is represented in the flow point
Locate the average error of indication increases how many relative to the original average error of indication.On the curve of error, different flow point is average
The error of indication is referred at arbitrarily first-class amount point after running-in relative to the side-play amount of the corresponding original average error of indication
Difference between the average error of indication of the average error of indication of diaphragm gas meter 3 and the diaphragm gas meter 3 that dispatches from the factory at the flow point
Value.The diaphragm gas meter 3 carries out running-in and refers to that 3 pairs of gas volumes through diaphragm gas meter 3 of diaphragm gas meter are measured.
Main control module is set on diaphragm gas meter 3 in step E, on the main control module, is provided with compensation of ageing mould
Block, electronic display module and power supply.By arranging the curve of error that can obtain preceding step of compensation of ageing module and old
Change the compensating parameter obtained after curve carries out data analysiss and be entered into compensation of ageing module, compensation of ageing module can be played automatically
Compensation and the effect of memory compensation parameter.
By the aging curve for obtaining obtaining in curve of error and step D in step B and step C by number in step F
Student movement is calculated and can obtain 3 different running-in amounts of diaphragm gas meter and the corresponding compensating parameter of flow point.The compensating parameter is entered into
In main control module, corresponding during certain running-in amount complete to 3 running-in of diaphragm gas meter using the main control module on diaphragm gas meter
The reading of flow point carries out the real-Time Compensation of the error of indication, it is to avoid reading of the diaphragm gas meter 3 due to the long appearance of use time
Number error.Be compensating parameter that aging curve and curve of error are obtained due to main control module is entered in E steps, therefore exist
When main control module is compensated to the reading of diaphragm gas meter 3, membrane type can be clicked through in different running-in amounts and flow to gas meter, flow meter 3
The compensation of Line Continuity, is not that the running-in amount to the several particular points of fixation and flow point are compensated.Therefore membrane type can be caused
Gas meter, flow meter 3 works continuously, and reading is accurate.The compensating parameter refer to according to curve of error and aging curve calculate in membrane type
Compensation error of the gas meter, flow meter 3 in stoichiometric number under free position.
Traditional common diaphragm gas meter 3 is counted to gas volume using mechanical mechanism, is used in long-term
In journey, diaphragm gas meter 3 becomes big as mechanical wear causes the reading of diaphragm gas meter to produce negative value error and error, therefore leads
Cause cannot accurate recording gas quantity cause economic loss.The measuring accuracy control method of above-mentioned diaphragm gas meter longtime running passes through
The error of indication and the measurement of ageing parameter to same model diaphragm gas meter 3, finally gives curve of error and aging curve.
The compensating parameter that curve of error and aging curve are obtained is entered in the main control module that arrange on diaphragm gas meter 3, by master
Reading when control module exports gas with corresponding flow point in use for some time to diaphragm gas meter 3 carries out the error of indication
Compensation so that, reducing transportation difference rate to the stoichiometric number of gas precisely.Ensure that diaphragm gas meter 3 uses the long period
Reading is accurate afterwards, extend the service life of diaphragm gas meter 3, reduce the use cost of diaphragm gas meter 3, it is to avoid replacing film
The waste that formula gas meter, flow meter 3 is caused.
The curve of error of test diaphragm gas meter 3 can adopt plurality of step, and need to only meet curve of error is fired in membrane type
Gas meter 3 is located in standard environment tested the obtaining that work.In order that testing procedure is simple, easy to operate.In step B
The curve of error of the test diaphragm gas meter 3 adopts following steps：
B1, the temperature that the diaphragm gas meter 3 of tested person is stabilized to testing location constant temperature more than four hours；
The diaphragm gas meter 3 of tested person is no less than 50 times of revolving bodies with maximum stream flow operation by B2, before testing begins
Long-pending test air；
B3, diaphragm gas meter 3 flow be respectively qmin, 3qmin, qt, 0.2qmax, 0.4qmax, 0.7qmax and
The flow point of qmax, by the air stream of a certain amount of volume through the diaphragm gas meter 3 of tested person, records the counting of diaphragm gas meter 3
The volume that device shows；Each diaphragm gas meter 3 is carried out 6 times respectively in different flow point, and guarantees to test flow difference every time, i.e.,
Follow-on test is carried out with identical total flow not in same traffic point；The temperature phase of the temperature of the air and testing location
With；Wherein qmin represents that minimum discharge, qt represent that metered flow, qmax represent maximum stream flow；
B4, the error of indication for being averagely worth to each flow point for calculating each 6 test result of flow point respectively；In quilt
All diaphragm gas meters 3 error of indication in same flow point is calculated at each flow point of the diaphragm gas meter 3 of test respectively
Meansigma methodss, are obtained the corresponding average error of indication at all diaphragm gas meters 3 each flow points, are obtained by the average error of indication
The curve of error of diaphragm gas meter 3.
Diaphragm gas meter 3 will be test in step bl is determined. be stabilized to the temperature of testing location, and constant temperature more than four hours；
When being passed through gas into diaphragm gas meter 3 and tested so as to avoid, the volume of gas can be changed due to the change of temperature；
Ensure that the accuracy of test.
In step B2, the diaphragm gas meter 3 of tested person turns round the survey of volumes with the operation of maximum stream flow qmax no less than 50 times
Examination air；It is present to ensure that the diaphragm gas meter 3 of selection is the diaphragm gas meter 3 that can realize normal work, does not exist useless
Table, affects measurement result.The revolution volume is that gas meter measuring room completes a cycle of operation institute expellant gas volume.
Have chosen 7 flow points in step B3 to be determined the curve of error of diaphragm gas meter 3, flow point is
It it is 7 common under 3 working condition of diaphragm gas meter when qmin, 3qmin, qt, 0.2qmax, 0.4qmax, 0.7qmax and qmax
Flow point.Choosing special operating point carries out testing the number that can simplify test flow point, while obtaining with regular generation
The error of indication of table, so as to obtain curve of error, reduces workload, improves work efficiency.Testing location temperature is used simultaneously
Air under degree carries out error of indication test；Ensure the unification of the calculating standard of the volume of air.As gas volume can be with
The change of temperature and pressure and change.Therefore with testing location at a temperature of air carry out the error of indication test avoid air
Volume changes during test, it is ensured that the accuracy of test.Adopt air environmental protection simultaneously, easily obtain.
The corresponding average error of indication at all diaphragm gas meters 3 each flow points is calculated in step B4, so
The curve of error of diaphragm gas meter 3 is obtained afterwards.Due to being that all errors of indication for being test for diaphragm gas meter 3 are carried out averagely
Value is calculated, hence in so that the curve of error that obtains of test is representative, it is to avoid the occasionality occurred in test, improves survey
Examination precision.
Due to 6 tests being carried out in each flow point in step B3 and B4, then calculate the error of indication of 6 tests
Meansigma methodss as corresponding flow point the error of indication, it is to avoid the occasionality in test process.
Error when each diaphragm gas meter 3 completes different running-in amounts can be accurately obtained out by above-mentioned steps bent
Line, while testing procedure is simple, measurement is convenient, and certainty of measurement is higher；The data that measurement is obtained are representative.
In the process for calculating the error of indication, the error of indication is calculated in step B and is calculated using below equation：
In formula：The error of indication of E single measurements, unit are %；VmThe indicating value of diaphragm gas meter, unit are dm3；
VrefBy the gas actual value of diaphragm gas meter, unit is dm3；
Temperature at the entrance point and standard set-up 2 of diaphragm gas meter, pressure should be measured during calibrating, carried out as follows
Temperature, pressure correction；
In formula：VSThe indicating value of standard set-up 2, unit dm3；PsaAbsolute pressure at standard set-up 2, unit Pa；
TSaThermodynamic temperature at standard set-up 2, unit K；PmaThe absolute pressure of diaphragm gas meter entrance point, unit Pa；Tma—
The thermodynamic temperature of diaphragm gas meter entrance point, unit K；
Impact of the temperature and pressure to gas volume is considered in above-mentioned computing formula, therefore which is carried out in formula
Revise.The error of indication is carried out calculating the shadow that can exclude temperature and pressure to testing gas volume using above-mentioned formula
Ring so that the error precision that test is obtained is higher.As diaphragm gas meter 3 is with temperature and pressure compensation function, in computer
Verification system software results interface directly displayed including temperature, the compensation of pressure, it is ensured that metric results accurate.
In order to reasonably choose tested diaphragm gas meter 3, described selection is test for diaphragm gas meter 3 in stepb
Method using randomly selecting, random number are produced by methods such as the table of random numbers, dice or playing card.By the side for randomly selecting
Formula causes the tested diaphragm gas meter 3 for extracting representative, and the diaphragm gas meter 3 of sampling can be good at reflecting similar
The characteristic of diaphragm gas meter 3.The dice obtains random number and refers to that by all 3 points of diaphragm gas meters to be selected be corresponding group
Number, the diaphragm gas meter 3 in being selected per group by the method for throwing away dice.The playing card obtain random number and refer to all membrane types
Gas meter, flow meter 3 is numbered according to playing card number, by randomly selecting playing card, then chooses corresponding diaphragm gas meter 3.
The actual volume for testing gas can be measured by multiple gases volume test device.In order that test
Accurately, the test device described in step A includes：Compressed air source unit 1, standard set-up 2, diaphragm gas meter 3, flow control valve 4；Institute
Sequentially pipe connects to state compressed air source unit 1, standard set-up 2,3 table of diaphragm gas, and the outlet of diaphragm gas meter 3 is provided with flow control valve 4.
Compressed air source unit 1, standard set-up 2, diaphragm gas meter 3 can be connected on same pipeline by the device, as long as ensureing pipeline
Air tight, then the flow for flowing through all devices is identical, therefore ensure that concordance and the accuracy of measurement.
In order to further improve the measuring accuracy of diaphragm gas meter 3, master control mould is set on diaphragm gas meter 3 as described in Figure 1
Block；Temperature sensor, pressure transducer, collection transport module and valve is provided between the diaphragm gas meter and main control module
Door, is provided with wireless remote transmission module, amount of money pre-payment/amount of money payment module, double interface datas storage interaction mould on main control module
The intelligent objects such as block, electronic seal module.The valve refers to electric control valve.By the temperature sensor on diaphragm gas meter 3,
Temperature and pressure parameter is delivered to main control module by pressure transducer, by compensation of the main control module to temperature and pressure parameter,
Ensure diaphragm gas meter 3 no matter be placed on the metering numerical value of diaphragm gas meter 3 in extraneous any environment all the time with standard state
Metering numerical value identical；Improve the measuring accuracy of diaphragm gas meter 3.Equipped with pre paid functionality module or nothing on main control module
Line remote-transmission module, very easily becomes the various intelligent diaphragm gas meters such as pre-payment or remote transmission intelligent diaphragm gas meter.
Embodiment one
Randomly selecting 100 diaphragm gas meters 3 to same type of diaphragm gas meter 3 carries out operation simulation test, chooses
100 diaphragm gas meters 3 are representative in order to ensure the result that the diaphragm gas meter of selection and test are obtained as far as possible.
1st, the selection of testing location, at the atmospheric pressure of the testing location of selection, temperature, relative humidity, standard set-up 2
The parameters such as the temperature difference at temperature and diaphragm gas meter 3 are compared as follows table with JJG577-2012 standards：
The testing location for selecting as seen from the above table meets JJG577-2012 standards.So as to complete to test diaphragm gas meter 3
Choose the selection with testing location.
Test device is got out simultaneously, test device as shown in Figure 2 includes：Compressed air source unit 1, standard set-up 2, Flow-rate adjustment
Valve 4；Sequentially pipe connects for the compressed air source unit 1, standard set-up 2, diaphragm gas meter 3, and the outlet of diaphragm gas meter 3 is provided with flow tune
Section valve 4.
2nd, the curve of error of diaphragm gas meter is tested
The diaphragm gas meter 3 of tested person is stabilized to temperature the constant temperature more than 4 hours of test environment first, with test ground
Air at a temperature of point carries out error of indication test；Then before testing begins, the diaphragm gas meter 3 of tested person is with max-flow
Test air of the amount operation no less than 50 times of revolution volumes；Then diaphragm gas meter 3 flow be respectively qmin, 3qmin,
The flow point of qt, 0.2qmax, 0.4qmax, 0.7qmax and qmax will measure the air of a certain amount of volume for obtaining actual volume
The diaphragm gas meter 3 of tested person is flowed through, the volume that the enumerator of diaphragm gas meter 3 shows is recorded；Each diaphragm gas meter 3 is not
Carry out 6 times with flow point, and guarantee to test flow difference every time, i.e., carried out with identical total flow not in same traffic point
Follow-on test；The temperature of the air is identical with the temperature of testing location；Wherein qmin represents that minimum discharge, qt represent specified stream
Amount, qmax represent maximum stream flow；
The error of indication that be averagely worth to each flow point of each flow point 6 test results is finally calculated respectively；?
It is test at each flow point of diaphragm gas meter 3 calculating indicating value mistake of all diaphragm gas meters 3 in same flow point respectively
Poor meansigma methodss, obtain the corresponding average error of indication at all diaphragm gas meters 3 each flow points, by the average error of indication
Obtain the curve of error of diaphragm gas meter 3.
Under be classified as the computing formula of the error of indication,
In formula：The error of indication of E single measurements, unit are %；VmThe indicating value of diaphragm gas meter, unit are dm3；
VrefBy the gas actual value of diaphragm gas meter, unit is dm3；
Temperature, pressure at the entrance point and standard set-up 2 of measurement diaphragm gas meter, enters trip temperature, pressure as follows
Power correction；
In formula：VSThe indicating value of standard set-up 2, unit are dm3；PsaAbsolute pressure at standard set-up 2, unit is
Pa；TSaThermodynamic temperature at standard set-up 2, unit are K；PmaThe absolute pressure of diaphragm gas meter entrance point, unit is
Pa；TmaThe thermodynamic temperature of diaphragm gas meter entrance point, unit are K.
The step of by the curve of error of the diaphragm gas meter 3 of above-mentioned test, obtains 6 months every months of diaphragm gas meter and runs
The error statistics data of each group diaphragm gas meter after running-in amount are determined in unification.
As shown in following table lattice：
Data in table, respectively diaphragm gas meter 3 qmax, 0.7qmax, 0.4qmax, 0.2qmax, qt, 3qmin and
Qmin each flow point has been carried out recording to the error of indication of diaphragm gas meter 3 and have been obtained.Each flow point in following form
The error of indication to represent and test the meansigma methodss for obtaining the error of indication through 6 times at the flow point.The average error of indication refers to institute
Have the meansigma methodss of the error of indication for diaphragm gas meter 3 being test at same flow point.Ageing parameter（ξ）Refer to that running-in is certain
The average error of indication of the diaphragm gas meter 3 of running-in amount at same flow point and the difference between the corresponding original average error of indication
Value.
Error of indication when the original error of indication refers to that diaphragm gas meter 3 just dispatches from the factory.
The diaphragm gas meter error statistics table that dispatches from the factory of 1 non-running-in of table
Continued 1
| 21304006 | -0.40 | -0.27 | -0.18 | 0.27 | 0.40 | 0.10 | -0.92 |
| 21304007 | -0.49 | -0.33 | -0.22 | 0.39 | 0.58 | -0.60 | -1.19 |
| 21304008 | 0.13 | -0.09 | 0.06 | 0.35 | 0.52 | -0.60 | -1.11 |
| 21304009 | -0.28 | -0.19 | -0.12 | 0.27 | 0.40 | -0.92 | -0.73 |
| 21304010 | -0.66 | -0.44 | -0.29 | 0.11 | 0.16 | -0.62 | -0.70 |
| 21304011 | 0.02 | -0.01 | 0.01 | 0.34 | 0.51 | -0.41 | -0.30 |
| 21304012 | -0.60 | -0.40 | -0.27 | 0.19 | 0.28 | -0.40 | -0.20 |
| 21304013 | -0.24 | -0.16 | -0.11 | 0.20 | 0.30 | -0.21 | -0.83 |
| 21304014 | -0.41 | -0.27 | -0.18 | 0.19 | 0.29 | -0.10 | -0.52 |
| 21304015 | -0.43 | -0.29 | -0.19 | 0.31 | 0.47 | 0.10 | -0.79 |
| 21304016 | -0.25 | -0.17 | -0.11 | 0.39 | 0.58 | 1.41 | -0.71 |
| 21304017 | -0.03 | -0.02 | -0.01 | 0.29 | 0.43 | -0.10 | -0.49 |
| 21304018 | 0.28 | 0.19 | 0.12 | 0.16 | 0.24 | -0.10 | -0.49 |
| 21304019 | -0.18 | -0.12 | -0.08 | 0.27 | 0.40 | 0.40 | -0.31 |
| 21304020 | 0.01 | 0.01 | 0.00 | 0.29 | 0.44 | 0.50 | -0.30 |
| 21304021 | -0.31 | -0.21 | -0.14 | 0.22 | 0.33 | -0.39 | -0.19 |
| 21304022 | -0.30 | -0.20 | -0.13 | 0.17 | 0.26 | -0.78 | 0.10 |
| 21304023 | 0.00 | 0.00 | 0.00 | 0.18 | 0.27 | -0.69 | -0.91 |
| 21304024 | -0.20 | -0.13 | -0.09 | 0.11 | 0.17 | -0.41 | -0.87 |
| 21304025 | -0.20 | -0.13 | -0.09 | 0.14 | 0.21 | -0.10 | -0.87 |
| 21304026 | -0.13 | -0.09 | -0.06 | 0.20 | 0.30 | -0.51 | -0.49 |
| 21304027 | -0.34 | -0.23 | -0.15 | 0.25 | 0.37 | -0.49 | -0.41 |
| 21304028 | -0.30 | -0.20 | -0.13 | 0.23 | 0.34 | -0.40 | -0.40 |
| 21304029 | 0.20 | 0.13 | -0.09 | 0.19 | 0.28 | 0.19 | -0.39 |
| 21304030 | -0.46 | -0.31 | -0.20 | 0.17 | 0.25 | -0.10 | -0.20 |
| 21304031 | -0.45 | -0.30 | -0.20 | 0.37 | 0.56 | -0.10 | -1.14 |
| 21304032 | -0.35 | -0.23 | -0.16 | 0.27 | 0.40 | -0.10 | -0.97 |
| 21304033 | -0.47 | -0.31 | -0.21 | 0.20 | 0.30 | 0.10 | -0.78 |
| 21304034 | -0.48 | -0.32 | -0.21 | 0.16 | 0.24 | -0.72 | -0.50 |
| 21304035 | -0.48 | -0.32 | 0.21 | 0.15 | 0.23 | -1.36 | -0.10 |
| 21304036 | -0.64 | -0.43 | -0.28 | 0.15 | 0.23 | -0.20 | -0.50 |
| 21304037 | -0.64 | -0.43 | -0.28 | 0.25 | 0.38 | 0.10 | -0.41 |
| 21304038 | -0.50 | -0.33 | -0.22 | 0.15 | 0.23 | 0.10 | -0.10 |
| 21304039 | -0.25 | -0.17 | -0.11 | 0.27 | 0.40 | 0.40 | -0.52 |
| 21304040 | -0.91 | -0.61 | -0.40 | 0.32 | 0.48 | 0.52 | -0.52 |
| 21304041 | -0.34 | -0.23 | -0.15 | 0.27 | 0.40 | -1.41 | -0.10 |
| 21304042 | -0.25 | -0.17 | -0.11 | 0.14 | 0.21 | 0.21 | 0.21 |
| 21304043 | -0.58 | -0.39 | -0.26 | 0.21 | 0.32 | -0.62 | 0.30 |
| 21304044 | -0.14 | -0.09 | -0.06 | 0.27 | 0.40 | 0.31 | -0.81 |
| 21304045 | -0.70 | -0.47 | -0.31 | 0.03 | 0.04 | 0.40 | -0.68 |
| 21304046 | -0.79 | -0.53 | -0.35 | 0.06 | 0.09 | -0.40 | -0.60 |
| 21304047 | -0.18 | -0.12 | -0.08 | 0.17 | 0.26 | -0.20 | -0.51 |
| 21304048 | 0.06 | 0.04 | 0.03 | 0.21 | 0.31 | 1.13 | -0.51 |
| 21304049 | -0.44 | -0.29 | -0.20 | 0.19 | 0.28 | 0.10 | 0.10 |
| 21304050 | 0.16 | -0.11 | 0.07 | 0.08 | 0.12 | 0.29 | 0.10 |
| 21304051 | -0.22 | -0.15 | -0.10 | 0.15 | 0.23 | 0.19 | -1.13 |
| 21304052 | -0.27 | -0.18 | -0.12 | 0.00 | 0.00 | -0.52 | -0.62 |
| 21304053 | -0.03 | -0.02 | -0.01 | 0.25 | 0.37 | -0.40 | -0.19 |
| 21304054 | -0.12 | -8.00 | -0.05 | 0.27 | 0.40 | -0.31 | -0.59 |
| 21304055 | -0.83 | -0.55 | -0.37 | 0.15 | 0.23 | 0.92 | -0.49 |
Continued 1
| 21304056 | -1.06 | -0.71 | -0.47 | 0.09 | 0.13 | 1.16 | -0.39 |
| 21304057 | -0.63 | -0.42 | -0.28 | 0.17 | 0.26 | -0.71 | -0.39 |
| 21304058 | -0.52 | -0.35 | -0.23 | 0.18 | 0.27 | -0.20 | -0.83 |
| 21304059 | -0.30 | -0.20 | -0.13 | 0.11 | 0.16 | 0.10 | -0.51 |
| 21304060 | -1.01 | -0.37 | -0.45 | 0.23 | 0.34 | 1.30 | -0.71 |
| 21304061 | -0.27 | -0.18 | -0.12 | 0.25 | 0.37 | -0.20 | -0.29 |
| 21304062 | 0.10 | -0.07 | 0.04 | 0.10 | 0.15 | 0.20 | -0.20 |
| 21304063 | -0.35 | -0.23 | -0.16 | 0.13 | 0.20 | 0.10 | 0.30 |
| 21304064 | 0.24 | 0.16 | 0.11 | 0.25 | 0.37 | 0.40 | 0.39 |
| 21304065 | -0.26 | -0.17 | -0.12 | 0.22 | 0.33 | 1.36 | -0.97 |
| 21304066 | -0.29 | -0.19 | -0.13 | 0.12 | 0.18 | 0.60 | -0.72 |
| 21304067 | -0.14 | -0.09 | -0.06 | 0.17 | 0.25 | 0.78 | -0.59 |
| 21304068 | -0.50 | -0.33 | -0.22 | 0.17 | 0.25 | 1.19 | -0.51 |
| 21304069 | -0.22 | -0.15 | -0.10 | 0.25 | 0.37 | 0.39 | -0.49 |
| 21304070 | -0.10 | -0.07 | -0.04 | 0.24 | 0.36 | 1.26 | -0.39 |
| 21304071 | -1.05 | -0.70 | -0.47 | 0.15 | 0.23 | 0.20 | 0.21 |
| 21304072 | -0.80 | -0.53 | -0.36 | 0.25 | 0.37 | 0.41 | -0.97 |
| 21304073 | -0.74 | -0.49 | -0.33 | 0.23 | 0.34 | 0.61 | -0.78 |
| 21304074 | -0.84 | -0.56 | -0.37 | 0.29 | 0.43 | -0.71 | -0.52 |
| 21304075 | -0.30 | -0.20 | -0.13 | 0.20 | 0.30 | -0.29 | -0.50 |
| 21304076 | -1.03 | -0.69 | -0.46 | 0.16 | 0.24 | 0.10 | -0.42 |
| 21304077 | -0.52 | -0.35 | -0.23 | 0.27 | 0.40 | 0.20 | -0.29 |
| 21304078 | -0.30 | -0.20 | -0.13 | 0.27 | 0.40 | -0.87 | 0.41 |
| 21304079 | -0.18 | -0.12 | -0.08 | 0.21 | 0.31 | -0.61 | -0.91 |
| 21304080 | -0.49 | -0.33 | -0.22 | 0.17 | 0.26 | -0.29 | -0.89 |
| 21304081 | 0.05 | 0.03 | 0.02 | 0.20 | 0.30 | -0.59 | -0.80 |
| 21304082 | -0.20 | -0.13 | -0.09 | 0.01 | 0.01 | -0.51 | -0.62 |
| 21304083 | 0.17 | 0.11 | 0.08 | 0.22 | 0.33 | 0.19 | -0.50 |
| 21304084 | 0.07 | 0.05 | 0.03 | 0.23 | 0.34 | -0.59 | -0.93 |
| 21304085 | -0.45 | -0.30 | -0.20 | 0.11 | 0.16 | -0.20 | -0.73 |
| 21304086 | -0.46 | -0.31 | -0.20 | 0.25 | 0.37 | -0.10 | -0.52 |
| 21304087 | -0.10 | -0.07 | -0.04 | 0.24 | 0.36 | -0.10 | -0.88 |
| 21304088 | -0.15 | -0.10 | -0.07 | 0.19 | 0.29 | -0.10 | -0.21 |
| 21304089 | -0.13 | -0.09 | -0.06 | 0.21 | 0.32 | -0.41 | -0.10 |
| 21304090 | -1.00 | -0.67 | -0.44 | 0.05 | 0.07 | -0.73 | -1.19 |
| 21304091 | -0.17 | -0.11 | -0.08 | 0.11 | 0.16 | -0.51 | -0.50 |
| 21304092 | -0.60 | -0.40 | -0.27 | 0.19 | 0.28 | 0.20 | -0.39 |
| 21304093 | -0.48 | -0.32 | -0.21 | 0.15 | 0.23 | -0.71 | -0.20 |
| 21304094 | -0.33 | -0.22 | -0.15 | 0.14 | 0.21 | -0.70 | 0.31 |
| 21304095 | -0.50 | -0.33 | -0.22 | 0.19 | 0.29 | -0.61 | -0.29 |
| 21304096 | -0.30 | -0.20 | -0.13 | -0.02 | -0.03 | -0.51 | -0.10 |
| 21304097 | -0.36 | -0.24 | -0.16 | 0.38 | 0.57 | -0.79 | 0.50 |
| 21304098 | -0.53 | -0.35 | -0.24 | 0.01 | 0.02 | -0.49 | -1.00 |
| 21304099 | -0.46 | -0.31 | -0.20 | 0.07 | 0.10 | -0.21 | -0.82 |
| 21304100 | -0.03 | -0.02 | -0.01 | 0.27 | 0.40 | -0.94 | -0.42 |
| The average error of indication | -0.34 | -0.31 | -0.15 | 0.20 | 0.29 | -0.10 | -0.49 |
| Ageing parameter |
Table 2, diaphragm gas meter running-in amount running-in 400m3Test result afterwards
Continued 2
| 21304048 | -0.24 | -0.26 | -0.27 | -0.11 | -0.02 | 1.00 | -1.05 |
| 21304049 | -0.64 | -0.50 | -0.42 | -0.07 | 0.01 | -0.21 | -0.21 |
| 21304050 | -0.10 | -0.34 | -0.18 | -0.17 | -0.14 | 0.03 | -0.21 |
| 21304051 | -0.40 | -0.33 | -0.29 | -0.06 | 0.01 | -0.04 | -1.69 |
| 21304052 | -0.52 | -0.44 | -0.39 | -0.28 | -0.28 | -1.04 | -1.16 |
| 21304053 | -0.26 | -0.25 | -0.24 | -0.01 | 0.10 | -0.83 | -0.56 |
| 21304054 | -0.33 | -0.33 | -0.27 | 0.02 | 0.14 | -0.70 | -1.05 |
| 21304055 | -0.95 | -0.70 | -0.54 | -0.07 | 0.00 | 0.86 | -0.9 |
| 21304056 | -1.24 | -0.93 | -0.71 | -0.21 | -0.17 | 1.00 | -0.89 |
| 21304057 | -0.79 | -0.60 | -0.48 | -0.07 | 0.01 | -1.20 | -0.8 |
| 21304058 | -0.69 | -0.54 | -0.43 | -0.06 | 0.02 | -0.56 | -1.35 |
| 21304059 | -0.50 | -0.41 | -0.34 | -0.13 | -0.08 | -0.19 | -0.95 |
| 21304060 | -1.20 | -0.62 | -0.69 | -0.08 | 0.02 | 1.23 | -1.29 |
| 21304061 | -0.53 | -0.45 | -0.40 | -0.06 | 0.05 | -0.65 | -0.76 |
| 21304062 | -0.15 | -0.31 | -0.21 | -0.15 | -0.11 | 0.09 | -0.59 |
| 21304063 | -0.53 | -0.45 | -0.39 | -0.13 | -0.06 | -0.21 | 0.04 |
| 21304064 | -0.03 | -0.10 | -0.14 | -0.02 | 0.09 | 0.16 | 0.15 |
| 21304065 | -0.50 | -0.42 | -0.38 | -0.07 | 0.03 | 1.33 | -1.59 |
| 21304066 | -0.53 | -0.44 | -0.39 | -0.16 | -0.11 | 0.38 | -1.28 |
| 21304067 | -0.40 | -0.35 | -0.32 | -0.12 | -0.05 | 0.60 | -1.11 |
| 21304068 | -0.75 | -0.60 | -0.50 | -0.15 | -0.08 | 1.06 | -1.06 |
| 21304069 | -0.42 | -0.36 | -0.32 | 0.00 | 0.11 | 0.18 | -0.93 |
| 21304070 | -0.40 | -0.37 | -0.34 | -0.09 | 0.02 | 1.15 | -0.91 |
| 21304071 | -1.24 | -0.93 | -0.72 | -0.16 | -0.09 | -0.16 | -0.15 |
| 21304072 | -0.97 | -0.73 | -0.58 | -0.03 | 0.08 | 0.16 | -1.56 |
| 21304073 | -0.92 | -0.69 | -0.55 | -0.05 | 0.05 | 0.41 | -1.33 |
| 21304074 | -0.96 | -0.71 | -0.54 | 0.05 | 0.18 | -1.18 | -0.94 |
| 21304075 | -0.48 | -0.39 | -0.32 | -0.03 | 0.06 | -0.65 | -0.91 |
| 21304076 | -1.20 | -0.89 | -0.68 | -0.13 | -0.05 | -0.25 | -0.9 |
| 21304077 | -0.68 | -0.53 | -0.42 | 0.03 | 0.14 | -0.05 | -0.66 |
| 21304078 | -0.49 | -0.40 | -0.33 | 0.03 | 0.14 | 1.39 | 0.21 |
| 21304079 | -0.46 | -0.41 | -0.37 | -0.11 | -0.02 | -1.18 | -1.55 |
| 21304080 | -0.74 | -0.59 | -0.50 | -0.14 | -0.06 | -0.78 | -1.53 |
| 21304081 | -0.20 | -0.22 | -0.23 | -0.06 | 0.03 | -1.08 | -1.34 |
| 21304082 | -0.39 | -0.32 | -0.29 | -0.20 | -0.20 | -0.93 | -1.06 |
| 21304083 | -0.05 | -0.11 | -0.14 | -0.01 | 0.09 | -0.05 | -0.91 |
| 21304084 | -0.22 | -0.23 | -0.25 | -0.07 | 0.03 | -1.13 | -1.55 |
| 21304085 | -0.64 | -0.50 | -0.41 | -0.14 | -0.09 | -0.58 | -1.24 |
| 21304086 | -0.68 | -0.55 | -0.45 | -0.05 | 0.06 | -0.50 | -1.03 |
| 21304087 | -0.36 | -0.33 | -0.31 | -0.05 | 0.05 | -0.50 | -1.48 |
| 21304088 | -0.43 | -0.39 | -0.36 | -0.13 | -0.04 | -0.54 | -0.68 |
| 21304089 | -0.41 | -0.38 | -0.35 | -0.11 | -0.01 | -0.93 | -0.54 |
| 21304090 | -1.15 | -0.86 | -0.65 | -0.21 | -0.19 | -1.26 | -1.84 |
| 21304091 | -0.41 | -0.35 | -0.32 | -0.15 | -0.11 | -0.99 | -0.98 |
| 21304092 | -0.79 | -0.61 | -0.50 | -0.08 | 0.00 | -0.10 | -0.84 |
| 21304093 | -0.70 | -0.56 | -0.46 | -0.14 | -0.06 | -1.26 | -0.63 |
| 21304094 | -0.57 | -0.47 | -0.41 | -0.14 | -0.08 | -1.25 | 0.01 |
| 21304095 | -0.72 | -0.57 | -0.47 | -0.10 | -0.01 | -1.14 | -0.74 |
| 21304096 | -0.54 | -0.45 | -0.39 | -0.29 | -0.30 | -1.01 | -0.5 |
| 21304097 | -0.59 | -0.48 | -0.41 | 0.08 | 0.25 | -1.36 | -0.26 |
Continued 2
| 21304098 | -0.69 | -0.53 | -0.43 | -0.21 | -0.20 | -0.91 | -1.55 |
| 21304099 | -0.71 | -0.58 | -0.48 | -0.23 | -0.21 | -0.68 | -1.44 |
| 21304100 | -0.32 | -0.32 | -0.31 | -0.05 | -0.06 | -1.59 | -0.94 |
| The average error of indication | -0.57 | -0.47 | -0.40 | -0.08 | 0.00 | -0.49 | -0.98 |
| Ageing parameter | -0.23 | -0.16 | -0.25 | -0.28 | -0.29 | -0.38 | -0.49 |
3 diaphragm gas meter running-in amount running-in 1000m of table3Test result afterwards
Continued 3
| 21304041 | -0.68 | -0.58 | -0.50 | -0.13 | -0.01 | -2.28 | -0.64 |
| 21304042 | -0.68 | -0.61 | -0.56 | -0.33 | -0.27 | -0.38 | -0.38 |
| 21304043 | -0.98 | -0.81 | -0.69 | -0.27 | -0.17 | -1.41 | -0.26 |
| 21304044 | -0.56 | -0.51 | -0.49 | -0.19 | -0.07 | -0.21 | -1.61 |
| 21304045 | -1.05 | -0.85 | -0.70 | -0.40 | -0.39 | -0.09 | -1.44 |
| 21304046 | -1.09 | -0.86 | -0.69 | -0.32 | -0.30 | -1.03 | -1.28 |
| 21304047 | -0.53 | -0.48 | -0.44 | -0.22 | -0.14 | -0.76 | -1.15 |
| 21304048 | -0.41 | -0.42 | -0.43 | -0.27 | -0.18 | 0.78 | -1.28 |
| 21304049 | -0.79 | -0.66 | -0.58 | -0.23 | -0.14 | -0.43 | -0.43 |
| 21304050 | -0.18 | -0.42 | -0.29 | -0.25 | -0.22 | -0.09 | -0.33 |
| 21304051 | -0.55 | -0.49 | -0.44 | -0.22 | -0.14 | -0.25 | -1.90 |
| 21304052 | -0.68 | -0.59 | -0.54 | -0.43 | -0.43 | -1.25 | -1.38 |
| 21304053 | -0.41 | -0.40 | -0.39 | -0.15 | -0.05 | -1.03 | -0.76 |
| 21304054 | -0.44 | -0.41 | -0.38 | -0.09 | 0.03 | -0.85 | -1.20 |
| 21304055 | -1.18 | -0.93 | -0.77 | -0.30 | -0.23 | 0.55 | -1.21 |
| 21304056 | -1.41 | -1.10 | -0.88 | -0.38 | -0.34 | -0.81 | -1.13 |
| 21304057 | -0.98 | -0.79 | -0.67 | -0.26 | -0.18 | -1.46 | -0.06 |
| 21304058 | -0.83 | -0.68 | -0.57 | -0.20 | -0.12 | -0.75 | -1.54 |
| 21304059 | -0.63 | -0.54 | -0.48 | -0.26 | -0.22 | -0.38 | -1.14 |
| 21304060 | -1.37 | -0.79 | -0.86 | -0.25 | -0.15 | 0.99 | -1.53 |
| 21304061 | -0.68 | -0.60 | -0.55 | -0.22 | -0.11 | -0.86 | -0.98 |
| 21304062 | -0.30 | -0.45 | -0.35 | -0.30 | -0.25 | -0.29 | -0.79 |
| 21304063 | -0.67 | -0.56 | -0.50 | -0.23 | -0.17 | -0.36 | -0.11 |
| 21304064 | -0.25 | -0.32 | -0.37 | -0.24 | -0.14 | -0.15 | -0.16 |
| 21304065 | -0.61 | -0.53 | -0.49 | -0.18 | -0.08 | 1.18 | -1.74 |
| 21304066 | -0.63 | -0.54 | -0.49 | -0.26 | -0.21 | 0.24 | -1.41 |
| 21304067 | -0.45 | -0.41 | -0.38 | -0.17 | -0.10 | 0.53 | -1.19 |
| 21304068 | -0.90 | -0.75 | -0.65 | -0.30 | -0.23 | 0.86 | -1.26 |
| 21304069 | -0.60 | -0.54 | -0.50 | -0.18 | -0.07 | -0.08 | -1.18 |
| 21304070 | -0.46 | -0.43 | -0.41 | -0.15 | -0.05 | 1.06 | -1.00 |
| 21304071 | -1.31 | -0.99 | -0.78 | -0.23 | -0.15 | -0.25 | -0.24 |
| 21304072 | -1.08 | -0.84 | -0.68 | -0.14 | -0.03 | 0.01 | -1.71 |
| 21304073 | -1.04 | -0.82 | -0.68 | -0.17 | -0.07 | 0.24 | -1.50 |
| 21304074 | -1.09 | -0.87 | -0.67 | -0.07 | 0.05 | -1.35 | -1.11 |
| 21304075 | -0.74 | -0.65 | -0.59 | -0.29 | -0.20 | -1.01 | -1.28 |
| 21304076 | -1.31 | -1.00 | -0.79 | -0.23 | -0.16 | -0.40 | -1.05 |
| 21304077 | -0.89 | -0.74 | -0.63 | -0.18 | -0.06 | -0.34 | -0.95 |
| 21304078 | -0.69 | -0.60 | -0.54 | -0.18 | -0.06 | -1.68 | -0.08 |
| 21304079 | -0.51 | -0.46 | -0.42 | -0.16 | -0.07 | -1.25 | -1.63 |
| 21304080 | -0.90 | -0.76 | -0.66 | -0.31 | -0.23 | -1.00 | -1.75 |
| 21304081 | -0.41 | -0.43 | -0.40 | -0.28 | -0.19 | -1.38 | -1.64 |
| 21304082 | -0.64 | -0.58 | -0.54 | -0.45 | -0.45 | -1.28 | -1.41 |
| 21304083 | -0.31 | -0.36 | -0.39 | -0.26 | -0.16 | -0.40 | -1.26 |
| 21304084 | -0.40 | -0.41 | -0.43 | -0.25 | -0.15 | -1.38 | -1.80 |
| 21304085 | -0.86 | -0.73 | -0.64 | -0.36 | -0.32 | -0.89 | -1.55 |
| 21304086 | -0.83 | -0.69 | -0.59 | -0.19 | -0.08 | -0.70 | -1.23 |
| 21304087 | -0.45 | -0.42 | -0.40 | -0.14 | -0.04 | -0.63 | -1.60 |
| 21304088 | -0.50 | -0.45 | -0.42 | -0.19 | -0.10 | -0.63 | -0.76 |
| 21304089 | -0.45 | -0.41 | -0.39 | -0.14 | -0.05 | -0.98 | -0.59 |
| 21304090 | -1.34 | -1.04 | -0.84 | -0.40 | -0.38 | -1.53 | -2.10 |
Continued 3
| 21304091 | -0.59 | -0.54 | -0.51 | -0.34 | -0.30 | -1.25 | -1.24 |
| 21304092 | -0.94 | -0.76 | -0.64 | -0.23 | -0.14 | -0.30 | -1.04 |
| 21304093 | -0.78 | -0.64 | -0.54 | -0.22 | -0.14 | -1.38 | -0.74 |
| 21304094 | -0.77 | -0.67 | -0.60 | -0.34 | -0.28 | -1.53 | -0.26 |
| 21304095 | -0.92 | -0.77 | -0.67 | -0.30 | -0.21 | -1.41 | -1.01 |
| 21304096 | -0.69 | -0.60 | -0.54 | -0.44 | -0.45 | -1.23 | -0.74 |
| 21304097 | -0.70 | -0.59 | -0.52 | -0.04 | 0.14 | -1.51 | 0.10 |
| 21304098 | -0.81 | -0.65 | -0.55 | -0.32 | -0.32 | -1.08 | -1.71 |
| 21304099 | -0.75 | -0.61 | -0.51 | -0.27 | -0.24 | -0.73 | -1.49 |
| 21304100 | -0.50 | -0.49 | -0.48 | -0.23 | -0.11 | -0.83 | -1.18 |
| The average error of indication | -0.71 | -0.61 | -0.54 | -0.22 | -0.14 | -0.70 | -1.17 |
| Ageing parameter | -0.37 | -0.30 | -0.39 | -0.42 | -0.44 | -0.59 | -0.67 |
4 diaphragm gas meter running-in amount running-in 2000m of table3Test result afterwards
Continued 4
| 21304034 | -0.99 | -0.85 | -0.75 | -0.41 | -0.34 | -1.68 | -1.4 |
| 21304035 | -0.94 | -0.79 | -0.32 | -0.37 | -0.30 | -2.40 | -0.83 |
| 21304036 | -1.13 | -0.95 | -0.81 | -0.42 | -0.35 | -1.03 | -1.4 |
| 21304037 | -1.08 | -0.89 | -0.76 | -0.28 | -0.16 | -0.58 | -1.21 |
| 21304038 | -0.95 | -0.79 | -0.69 | -0.36 | -0.29 | -0.56 | -0.81 |
| 21304039 | -0.79 | -0.72 | -0.67 | -0.32 | -0.21 | -0.29 | -1.44 |
| 21304040 | -1.38 | -1.11 | -0.92 | -0.27 | -0.13 | -0.13 | -1.43 |
| 21304041 | -0.78 | -0.68 | -0.61 | -0.23 | -0.12 | -2.43 | -0.79 |
| 21304042 | -0.78 | -0.71 | -0.66 | -0.43 | -0.37 | -0.51 | -0.51 |
| 21304043 | -1.07 | -0.90 | -0.78 | -0.36 | -0.26 | -1.54 | -0.39 |
| 21304044 | -0.65 | -0.60 | -0.58 | -0.28 | -0.16 | -0.34 | -1.74 |
| 21304045 | -1.12 | -0.91 | -0.77 | -0.46 | -0.45 | -0.18 | -1.53 |
| 21304046 | -1.20 | -0.96 | -0.80 | -0.43 | -0.41 | -1.18 | -1.43 |
| 21304047 | -0.64 | -0.59 | -0.55 | -0.32 | -0.24 | -0.91 | -1.3 |
| 21304048 | -0.52 | -0.54 | -0.55 | -0.39 | -0.30 | 0.61 | -1.44 |
| 21304049 | -0.95 | -0.82 | -0.74 | -0.39 | -0.31 | -0.65 | -0.65 |
| 21304050 | -0.39 | -0.63 | -0.47 | -0.46 | -0.42 | -0.38 | -0.61 |
| 21304051 | -0.70 | -0.64 | -0.59 | -0.37 | -0.30 | -0.46 | -2.11 |
| 21304052 | -0.80 | -0.72 | -0.67 | -0.56 | -0.56 | -1.43 | -1.55 |
| 21304053 | -0.59 | -0.59 | -0.58 | -0.34 | -0.23 | -1.29 | -1.03 |
| 21304054 | -0.68 | -0.64 | -0.61 | -0.32 | -0.21 | -1.18 | -1.53 |
| 21304055 | -1.27 | -1.02 | -0.86 | -0.39 | -0.32 | 0.43 | -1.34 |
| 21304056 | -1.52 | -1.21 | -0.99 | -0.49 | -0.45 | 0.66 | -1.28 |
| 21304057 | -1.13 | -0.95 | -0.82 | -0.41 | -0.33 | -1.68 | -1.28 |
| 21304058 | -1.02 | -0.86 | -0.76 | -0.39 | -0.31 | -1.01 | -1.8 |
| 21304059 | -0.82 | -0.73 | -0.67 | -0.45 | -0.41 | -0.64 | -1.4 |
| 21304060 | -1.42 | -0.85 | -0.92 | -0.31 | -0.21 | 0.91 | -1.6 |
| 21304061 | -0.75 | -0.67 | -0.61 | -0.28 | -0.17 | -0.95 | -1.06 |
| 21304062 | -0.49 | -0.64 | -0.54 | -0.49 | -0.44 | -0.55 | -1.05 |
| 21304063 | -0.81 | -0.70 | -0.64 | -0.38 | -0.32 | -0.56 | -0.31 |
| 21304064 | -0.34 | -0.41 | -0.46 | -0.33 | -0.23 | -0.28 | -0.29 |
| 21304065 | -0.74 | -0.66 | -0.61 | -0.31 | -0.21 | 1.00 | -1.91 |
| 21304066 | -0.77 | -0.68 | -0.62 | -0.40 | -0.34 | 0.05 | -1.6 |
| 21304067 | -0.60 | -0.56 | -0.53 | -0.32 | -0.25 | 0.31 | -1.4 |
| 21304068 | -0.95 | -0.80 | -0.70 | -0.35 | -0.28 | 0.79 | -1.34 |
| 21304069 | 0.69 | -0.63 | -0.59 | -0.27 | -0.16 | -0.20 | -1.3 |
| 21304070 | -0.57 | -0.54 | -0.51 | -0.26 | -0.15 | 0.91 | -1.15 |
| 21304071 | -1.51 | -1.20 | -0.99 | -0.43 | -0.36 | -0.54 | -0.53 |
| 21304072 | -1.25 | -1.01 | -0.86 | -0.31 | -0.20 | -0.23 | -1.95 |
| 21304073 | -1.19 | -0.96 | -0.82 | -0.32 | -0.22 | 0.04 | -1.7 |
| 21304074 | -1.31 | -1.03 | -0.89 | -0.30 | -0.17 | -1.66 | -1.43 |
| 21304075 | -0.83 | -0.74 | -0.68 | -0.38 | -0.29 | -1.14 | -1.4 |
| 21304076 | -1.46 | -1.15 | -0.95 | -0.39 | -0.32 | -0.61 | -1.26 |
| 21304077 | -1.02 | -0.86 | -0.76 | -0.31 | -0.19 | -0.51 | -1.13 |
| 21304078 | -0.82 | -0.73 | -0.67 | -0.31 | -0.19 | -1.85 | -0.25 |
| 21304079 | -0.61 | -0.56 | -0.52 | -0.26 | -0.17 | -1.39 | -1.76 |
| 21304080 | -0.95 | -0.80 | -0.70 | -0.35 | -0.27 | -1.06 | -1.81 |
| 21304081 | -0.53 | -0.55 | -0.56 | -0.40 | -0.31 | -1.54 | -1.8 |
| 21304082 | -0.76 | -0.69 | -0.66 | -0.57 | -0.57 | -1.44 | -1.58 |
| 21304083 | -0.42 | -0.48 | -0.50 | -0.38 | -0.28 | -0.56 | -1.43 |
Continued 4
| 21304084 | -0.50 | -0.52 | -0.54 | -0.36 | -0.26 | -1.53 | -1.95 |
| 21304085 | -0.96 | -0.83 | -0.74 | -0.46 | -0.41 | -1.03 | -1.69 |
| 21304086 | -0.94 | -0.80 | -0.70 | -0.30 | -0.19 | -0.85 | -1.38 |
| 21304087 | -0.60 | -0.58 | -0.55 | -0.30 | -0.19 | -0.84 | -1.81 |
| 21304088 | -0.65 | -0.60 | -0.58 | -0.34 | -0.25 | -0.84 | -0.98 |
| 21304089 | -0.59 | -0.56 | -0.53 | -0.29 | -0.19 | -1.18 | -0.79 |
| 21304090 | -1.40 | -1.11 | -0.90 | -0.46 | -0.44 | -1.61 | -2.19 |
| 21304091 | -0.66 | -0.60 | -0.58 | -0.41 | -0.36 | -1.34 | -1.33 |
| 21304092 | -1.04 | -0.86 | -0.74 | -0.32 | -0.24 | -0.44 | -1.18 |
| 21304093 | -1.00 | -0.86 | -0.76 | -0.43 | -0.36 | -1.68 | -1.04 |
| 21304094 | -0.83 | -0.73 | -0.67 | -0.41 | -0.34 | -1.61 | -0.35 |
| 21304095 | -0.97 | -0.82 | -0.72 | -0.35 | -0.26 | -1.49 | -1.09 |
| 21304096 | -0.79 | -0.70 | -0.64 | -0.54 | -0.55 | -1.36 | -0.85 |
| 21304097 | -0.87 | -0.77 | -0.69 | -0.21 | -0.04 | -1.75 | -0.14 |
| 21304098 | -1.03 | -0.86 | -0.77 | -0.54 | -0.53 | -1.38 | -2.01 |
| 21304099 | -0.96 | -0.83 | -0.73 | -0.49 | -0.46 | -1.03 | -1.79 |
| 21304100 | -0.58 | -0.57 | -0.56 | -0.31 | -0.19 | -1.94 | -1.29 |
| The average error of indication | -0.82 | -0.74 | -0.66 | -0.35 | -0.26 | -0.89 | -1.35 |
| Ageing parameter | -0.48 | -0.43 | -0.51 | -0.55 | -0.56 | -0.78 | -0.86 |
5 diaphragm gas meter running-in amount running-in 4000m of table3Test result afterwards
Continued 5
| 21304027 | -0.98 | -0.88 | -0.81 | -0.45 | -0.34 | -1.55 | -1.45 |
| 21304028 | -0.93 | -0.84 | -0.77 | -0.45 | -0.35 | -1.41 | -1.41 |
| 21304029 | -0.45 | -0.51 | -0.71 | -0.46 | -0.38 | -0.64 | -1.36 |
| 21304030 | -1.04 | -0.91 | -0.81 | -0.48 | -0.41 | -1.00 | -1.13 |
| 21304031 | -1.04 | -0.90 | -0.81 | -0.36 | -0.13 | -1.00 | -2.3 |
| 21304032 | -0.91 | -0.80 | -0.74 | -0.35 | -0.23 | -0.95 | -2.04 |
| 21304033 | -1.02 | -0.87 | -0.78 | -0.41 | -0.32 | -0.70 | -1.8 |
| 21304034 | -1.13 | -0.99 | -0.89 | -0.56 | -0.49 | -1.88 | -1.6 |
| 21304035 | -1.08 | -0.94 | -0.46 | -0.51 | -0.44 | -2.60 | -1.03 |
| 21304036 | -1.31 | -1.12 | -0.98 | -0.59 | -0.52 | -1.26 | -1.64 |
| 21304037 | -1.22 | -1.03 | -0.89 | -0.41 | -0.30 | -0.76 | -1.4 |
| 21304038 | -1.18 | -1.03 | -0.93 | -0.59 | -0.52 | -0.89 | -1.14 |
| 21304039 | -0.96 | -0.89 | -0.84 | -0.50 | -0.38 | -0.53 | -1.68 |
| 21304040 | -1.51 | -1.24 | -1.05 | -0.41 | -0.26 | -0.31 | -1.61 |
| 21304041 | -0.92 | -0.82 | -0.75 | -0.37 | -0.25 | -2.61 | -0.98 |
| 21304042 | -0.88 | -0.81 | -0.76 | -0.53 | -0.47 | -0.65 | -0.65 |
| 21304043 | -1.13 | -0.95 | -0.84 | -0.41 | -0.32 | -1.61 | -0.46 |
| 21304044 | -0.88 | -0.84 | -0.81 | -0.51 | -0.40 | -0.66 | -2.06 |
| 21304045 | -1.24 | -1.04 | -0.89 | -0.59 | -0.58 | -0.35 | -1.7 |
| 21304046 | -1.30 | -1.06 | -0.90 | -0.53 | -0.50 | -1.31 | -1.56 |
| 21304047 | -0.80 | -0.75 | -0.71 | -0.49 | -0.41 | -1.14 | -1.53 |
| 21304048 | -0.54 | -0.56 | -0.57 | -0.41 | -0.32 | 0.59 | -1.46 |
| 21304049 | -1.08 | -0.95 | -0.86 | -0.51 | -0.43 | -0.83 | -0.83 |
| 21304050 | -0.59 | -0.84 | -0.68 | -0.67 | -0.63 | -0.66 | -0.9 |
| 21304051 | -0.88 | -0.82 | -0.77 | -0.55 | -0.48 | -0.71 | -2.36 |
| 21304052 | -0.91 | -0.83 | -0.77 | -0.67 | -0.67 | -1.58 | -1.7 |
| 21304053 | -0.72 | -0.71 | -0.70 | -0.47 | -0.36 | -1.46 | -1.2 |
| 21304054 | -0.72 | -0.68 | -0.66 | -0.37 | -0.25 | -1.24 | -1.59 |
| 21304055 | -1.35 | -1.10 | -0.94 | -0.47 | -0.40 | 0.31 | -1.45 |
| 21304056 | -1.66 | -1.34 | -1.13 | -0.62 | -0.59 | 0.48 | -1.46 |
| 21304057 | -1.23 | -1.04 | -0.92 | -0.54 | -0.43 | -1.81 | -1.41 |
| 21304058 | -1.05 | -0.90 | -0.79 | -0.42 | -0.34 | -1.06 | -1.85 |
| 21304059 | -1.03 | -0.94 | -0.87 | -0.66 | -0.61 | -0.93 | -1.69 |
| 21304060 | -1.67 | -1.09 | -1.16 | -0.55 | -0.45 | 0.58 | -1.94 |
| 21304061 | -0.94 | -0.86 | -0.80 | -0.47 | -0.36 | -1.21 | -1.33 |
| 21304062 | -0.64 | -0.79 | -0.69 | -0.64 | -0.59 | -0.76 | -1.26 |
| 21304063 | -0.99 | -0.88 | -0.82 | -0.56 | -0.50 | -0.81 | -0.56 |
| 21304064 | -0.37 | -0.44 | -0.49 | -0.36 | -0.25 | -0.31 | -0.33 |
| 21304065 | -0.93 | -0.85 | -0.80 | -0.50 | -0.39 | 0.74 | -2.18 |
| 21304066 | -0.94 | -0.85 | -0.79 | -0.57 | -0.51 | -0.19 | -1.84 |
| 21304067 | -0.79 | -0.75 | -0.72 | -0.51 | -0.44 | 0.05 | -1.66 |
| 21304068 | -1.08 | -0.93 | -0.83 | -0.48 | -0.41 | 0.61 | -1.51 |
| 21304069 | -0.78 | -0.72 | -0.68 | -0.36 | -0.25 | -0.33 | -1.43 |
| 21304070 | -0.75 | -0.72 | -0.69 | -0.44 | -0.33 | 0.66 | -1.4 |
| 21304071 | -1.65 | -1.33 | -1.13 | -0.57 | -0.50 | -0.73 | -0.71 |
| 21304072 | -1.42 | -1.18 | -1.03 | -0.48 | -0.37 | -0.46 | -2.19 |
| 21304073 | -1.31 | -1.09 | -0.95 | -0.44 | -0.34 | -0.14 | -1.88 |
| 21304074 | -1.36 | -1.11 | -0.94 | -0.34 | -0.22 | -1.73 | -1.49 |
| 21304075 | -1.00 | -0.91 | -0.85 | -0.55 | -0.46 | -1.38 | -1.64 |
| 21304076 | -1.61 | -1.31 | -1.10 | -0.54 | -0.47 | -0.83 | -1.48 |
Continued 5
| 21304077 | -1.06 | -0.91 | -0.80 | -0.35 | -0.23 | -0.58 | -1.19 |
| 21304078 | -0.89 | -0.80 | -0.74 | -0.38 | -0.26 | -1.95 | -0.35 |
| 21304079 | -0.88 | -0.83 | -0.79 | -0.53 | -0.44 | -1.76 | -2.14 |
| 21304080 | -1.13 | -0.98 | -0.88 | -0.53 | -0.45 | -1.31 | -2.06 |
| 21304081 | -0.63 | -0.65 | -0.66 | -0.50 | -0.41 | -1.68 | -1.94 |
| 21304082 | -0.85 | -0.78 | -0.75 | -0.66 | -0.66 | -1.56 | -1.7 |
| 21304083 | -0.49 | -0.54 | -0.57 | -0.44 | -0.34 | -0.65 | -1.51 |
| 21304084 | -0.56 | -0.58 | -0.59 | -0.41 | -0.32 | -1.60 | -2.03 |
| 21304085 | -1.03 | -0.89 | -0.80 | -0.52 | -0.48 | -1.11 | -1.78 |
| 21304086 | -1.07 | -0.94 | -0.84 | -0.43 | -0.32 | -1.04 | -1.56 |
| 21304087 | -0.74 | -0.71 | -0.68 | -0.43 | -0.32 | -1.03 | -2 |
| 21304088 | -0.73 | -0.68 | -0.66 | -0.42 | -0.33 | -0.95 | -1.09 |
| 21304089 | -0.71 | -0.68 | -0.65 | -0.41 | -0.31 | -1.34 | -0.95 |
| 21304090 | -1.51 | -1.22 | -1.01 | -0.57 | -0.55 | -1.76 | -2.34 |
| 21304091 | -0.75 | -0.69 | -0.67 | -0.50 | -0.45 | -1.46 | -1.45 |
| 21304092 | -1.13 | -0.95 | -0.84 | -0.42 | -0.34 | -0.58 | -1.31 |
| 21304093 | -1.15 | -1.01 | -0.91 | -0.59 | -0.51 | -1.89 | -1.25 |
| 21304094 | -1.02 | -0.92 | -0.86 | -0.59 | -0.53 | -1.88 | -0.61 |
| 21304095 | -1.13 | -0.97 | -0.87 | -0.50 | -0.41 | -1.70 | -1.3 |
| 21304096 | -0.95 | -0.86 | -0.79 | -0.69 | -0.70 | -1.58 | -1.06 |
| 21304097 | -0.96 | -0.86 | -0.78 | -0.30 | -0.13 | -1.88 | -0.26 |
| 21304098 | -1.11 | -0.95 | -0.85 | -0.62 | -0.61 | -1.49 | -2.13 |
| 21304099 | -1.04 | -0.91 | -0.81 | -0.57 | -0.54 | -1.14 | -1.9 |
| 21304100 | -0.66 | -0.65 | -0.64 | -0.39 | -0.27 | -2.05 | -1.4 |
| The average error of indication Ageing parameter | -0.97 -0.63 | -0.87 -0.56 | -0.80 -0.65 | -0.49 -0.68 | -0.40 -0.69 | -1.07 -0.96 | -1.54 -1.04 |
6 diaphragm gas meter running-in amount running-in 6000m of table3Test result afterwards
Continued 6
| 21304020 | -0.95 | -0.95 | -0.95 | -0.69 | -0.56 | -0.70 | -1.70 |
| 21304021 | -1.13 | -1.04 | -0.98 | -0.66 | -0.56 | -1.68 | -1.43 |
| 21304022 | -0.99 | -0.90 | -0.84 | -0.57 | -0.49 | -1.98 | -0.88 |
| 21304023 | -0.86 | -0.86 | -0.86 | -0.69 | -0.61 | -2.05 | -2.33 |
| 21304024 | -0.97 | -0.90 | -0.87 | -0.69 | -0.64 | -1.61 | -2.19 |
| 21304025 | -1.17 | -1.11 | -1.07 | -0.86 | -0.80 | -1.50 | -2.46 |
| 21304026 | -1.08 | -1.04 | -1.02 | -0.78 | -0.69 | -1.98 | -1.95 |
| 21304027 | -1.21 | -1.11 | -1.04 | -0.68 | -0.57 | -1.86 | -1.76 |
| 21304028 | -1.17 | -1.08 | -1.02 | -0.69 | -0.59 | -1.75 | -1.75 |
| 21304029 | -0.70 | -0.77 | -0.96 | -0.71 | -0.63 | -0.99 | -1.71 |
| 21304030 | -1.20 | -1.06 | -0.96 | -0.63 | -0.56 | -1.21 | -1.34 |
| 21304031 | -1.44 | -1.31 | -1.22 | -0.70 | -0.53 | -1.56 | -2.86 |
| 21304032 | -1.19 | -1.08 | -1.02 | -0.63 | -0.51 | -1.34 | -2.43 |
| 21304033 | -1.47 | -1.32 | -1.23 | -0.86 | -0.77 | -1.33 | -2.43 |
| 21304034 | -1.31 | -1.17 | -1.07 | -0.74 | -0.67 | -2.13 | -1.85 |
| 21304035 | -1.40 | -1.25 | -0.77 | -0.83 | -0.76 | -3.04 | -1.46 |
| 21304036 | -1.53 | -1.34 | -1.21 | -0.82 | -0.75 | -1.58 | -1.95 |
| 21304037 | -1.40 | -1.21 | -1.07 | -0.59 | -0.48 | -1.01 | -1.65 |
| 21304038 | -1.47 | -1.31 | -1.22 | -0.88 | -0.81 | -1.29 | -1.54 |
| 21304039 | -1.17 | -1.10 | -1.04 | -0.70 | -0.59 | -0.81 | -1.96 |
| 21304040 | -1.76 | -1.49 | -1.31 | -0.66 | -0.51 | -0.66 | -1.96 |
| 21304041 | -1.13 | -1.04 | -0.96 | -0.59 | -0.47 | -2.91 | -1.28 |
| 21304042 | -1.02 | -0.95 | -0.89 | -0.67 | -0.60 | -0.84 | -0.84 |
| 21304043 | -1.44 | -1.27 | -1.15 | -0.73 | -0.63 | -2.05 | -0.90 |
| 21304044 | -1.00 | -0.95 | -0.93 | -0.63 | -0.51 | -0.83 | -2.23 |
| 21304045 | -1.49 | -1.28 | -1.13 | -0.83 | -0.82 | -0.69 | -2.04 |
| 21304046 | -1.56 | -1.32 | -1.16 | -0.79 | -0.77 | -1.68 | -1.93 |
| 21304047 | -1.19 | -1.13 | -1.10 | -0.87 | -0.79 | -1.68 | -2.06 |
| 21304048 | -0.97 | -0.99 | -1.00 | -0.84 | -0.75 | -0.01 | -2.06 |
| 21304049 | -1.35 | -1.22 | -1.13 | -0.78 | -0.70 | -1.20 | -1.20 |
| 21304050 | -0.69 | -0.94 | -0.77 | -0.77 | -0.73 | -0.80 | -1.04 |
| 21304051 | -1.01 | -0.95 | -0.90 | -0.68 | -0.60 | -0.89 | -2.54 |
| 21304052 | -1.22 | -1.13 | -1.08 | -0.97 | -0.97 | -2.00 | -2.13 |
| 21304053 | -0.86 | -0.85 | -0.84 | -0.60 | -0.50 | -1.65 | -1.39 |
| 21304054 | -0.94 | -8.03 | -0.87 | -0.59 | -0.47 | -1.54 | -1.89 |
| 21304055 | -1.58 | -1.32 | -1.16 | -0.69 | -0.62 | 0.00 | -1.76 |
| 21304056 | -2.00 | -1.68 | -1.47 | -0.96 | -0.93 | 0.00 | -1.94 |
| 21304057 | -1.59 | -1.40 | -1.28 | -0.87 | -0.79 | -2.31 | -1.91 |
| 21304058 | -1.49 | -1.34 | -1.23 | -0.86 | -0.78 | -1.68 | -2.46 |
| 21304059 | -1.13 | -1.04 | -0.98 | -0.77 | -0.72 | -1.08 | -1.84 |
| 21304060 | -1.70 | -1.13 | -1.20 | -0.59 | -0.49 | 0.53 | -1.99 |
| 21304061 | -1.30 | -1.22 | -1.16 | -0.83 | -0.72 | -1.71 | -1.83 |
| 21304062 | -0.96 | -1.12 | -1.05 | -0.96 | -0.92 | -1.21 | -1.71 |
| 21304063 | -1.33 | -1.22 | -1.16 | -0.90 | -0.84 | -1.29 | -1.04 |
| 21304064 | -0.80 | -0.87 | -0.92 | -0.79 | -0.68 | -0.91 | -0.93 |
| 21304065 | -1.21 | -1.13 | -1.08 | -0.77 | -0.67 | 0.35 | -2.56 |
| 21304066 | -1.22 | -1.13 | -1.08 | -0.86 | -0.80 | -0.59 | -2.24 |
| 21304067 | -1.09 | -1.04 | -1.02 | -0.81 | -0.74 | -0.36 | -2.08 |
| 21304068 | -1.41 | -1.26 | -1.16 | -0.81 | -0.71 | 0.15 | -1.98 |
| 21304069 | -1.06 | -1.00 | -0.95 | -0.64 | -0.53 | -0.71 | -1.81 |
Continued 6
| 21304070 | -0.86 | -0.84 | -0.81 | -0.56 | -0.45 | 0.50 | -1.56 |
| 21304071 | -1.90 | -1.58 | -1.38 | -0.82 | -0.75 | -1.08 | -1.06 |
| 21304072 | -1.62 | -1.38 | -1.22 | -0.68 | -0.57 | -0.74 | -2.46 |
| 21304073 | -1.57 | -1.34 | -1.20 | -0.69 | -0.59 | -0.49 | -2.23 |
| 21304074 | -1.78 | -1.53 | -1.36 | -0.77 | -0.64 | -2.31 | -2.08 |
| 21304075 | -1.30 | -1.21 | -1.14 | -0.85 | -0.76 | -1.79 | -2.05 |
| 21304076 | -1.85 | -1.55 | -1.34 | -0.78 | -0.71 | -1.16 | -1.81 |
| 21304077 | -1.40 | -1.24 | -1.13 | -0.68 | -0.57 | -1.04 | -1.65 |
| 21304078 | -1.11 | -1.02 | -0.95 | -0.59 | -0.48 | -2.25 | -0.65 |
| 21304079 | -1.03 | -0.97 | -0.94 | -0.68 | -0.59 | -1.96 | -2.34 |
| 21304080 | -1.48 | -1.33 | -1.23 | -0.88 | -0.80 | -1.80 | -2.55 |
| 21304081 | -0.98 | -1.00 | -1.01 | -0.85 | -0.76 | -2.16 | -2.43 |
| 21304082 | -1.12 | -1.05 | -1.02 | -0.93 | -0.93 | -1.94 | -2.08 |
| 21304083 | -0.78 | -0.84 | -0.86 | -0.74 | -0.64 | -1.06 | -1.93 |
| 21304084 | -0.84 | -0.86 | -0.87 | -0.69 | -0.59 | -1.99 | -2.41 |
| 21304085 | -1.27 | -1.13 | -1.04 | -0.77 | -0.72 | -1.45 | -2.11 |
| 21304086 | -1.22 | -1.08 | -0.98 | -0.58 | -0.47 | -1.24 | -1.76 |
| 21304087 | -0.86 | -0.84 | -0.81 | -0.56 | -0.45 | -1.20 | -2.18 |
| 21304088 | -1.11 | -1.06 | -1.04 | -0.80 | -0.71 | -1.48 | -1.61 |
| 21304089 | -1.05 | -1.02 | -0.99 | -0.75 | -0.65 | -1.81 | -1.43 |
| 21304090 | -1.84 | -1.54 | -1.33 | -0.89 | -0.87 | -2.21 | -2.79 |
| 21304091 | -1.08 | -1.03 | -1.00 | -0.83 | -0.78 | -1.93 | -1.91 |
| 21304092 | -1.41 | -1.23 | -1.12 | -0.70 | -0.62 | -0.96 | -1.70 |
| 21304093 | -1.28 | -1.13 | -1.04 | -0.71 | -0.64 | -2.06 | -1.43 |
| 21304094 | -1.13 | -1.03 | -0.96 | -0.70 | -0.64 | -2.03 | -0.76 |
| 21304095 | -1.38 | -1.22 | -1.13 | -0.76 | -0.67 | -2.05 | -1.65 |
| 21304096 | -1.19 | -1.10 | -1.04 | -0.94 | -0.95 | -1.91 | -1.40 |
| 21304097 | -1.31 | -1.21 | -1.13 | -0.65 | -0.48 | -2.36 | -0.75 |
| 21304098 | -1.47 | -1.31 | -1.21 | -0.98 | -0.97 | -1.99 | -2.63 |
| 21304099 | -1.36 | -1.22 | -1.13 | -0.88 | -0.86 | -1.58 | -2.34 |
| 21304100 | -0.93 | -0.92 | -0.91 | -0.66 | -0.54 | -2.43 | -1.78 |
| The average error of indication | -1.23 | -1.20 | -1.05 | -0.74 | -0.65 | -1.39 | -1.89 |
| Ageing parameter | -0.88 | -0.88 | -0.90 | -0.93 | -0.94 | -1.29 | -1.39 |
7 diaphragm gas meter running-in amount running-in 8000m of table3Test result afterwards
Continued 7
| 21304013 | -1.42 | -1.35 | -1.31 | -1.03 | -0.94 | -1.94 | -2.71 |
| 21304014 | -1.58 | -1.45 | -1.37 | -1.04 | -0.95 | -1.80 | -2.33 |
| 21304015 | -1.45 | -1.32 | -1.23 | -0.78 | -0.64 | -1.35 | -2.46 |
| 21304016 | -1.57 | -1.49 | -1.44 | -0.99 | -0.82 | -0.10 | -2.75 |
| 21304017 | -1.32 | -1.31 | -1.31 | -1.04 | -0.91 | -1.93 | -2.41 |
| 21304018 | -1.01 | -1.09 | -1.15 | -1.12 | -1.04 | -1.88 | -2.36 |
| 21304019 | -1.31 | -1.25 | -1.22 | -0.90 | -0.78 | -1.09 | -1.98 |
| 21304020 | -1.13 | -1.13 | -1.13 | -0.87 | -0.74 | -0.95 | -1.95 |
| 21304021 | -1.34 | -1.25 | -1.19 | -0.86 | -0.77 | -1.96 | -1.71 |
| 21304022 | -1.53 | -1.44 | -1.38 | -1.11 | -1.03 | -2.73 | -1.63 |
| 21304023 | -1.17 | -1.17 | -1.17 | -1.01 | -0.93 | -2.49 | -2.76 |
| 21304024 | -1.50 | -1.44 | -1.40 | -1.22 | -1.17 | -2.35 | -2.93 |
| 21304025 | -1.28 | -1.22 | -1.18 | -0.97 | -0.91 | -1.65 | -2.61 |
| 21304026 | -1.18 | -1.14 | -1.12 | -0.88 | -0.79 | -2.11 | -2.09 |
| 21304027 | -1.49 | -1.39 | -1.31 | -0.95 | -0.85 | -2.25 | -2.15 |
| 21304028 | -1.40 | -1.31 | -1.25 | -0.93 | -0.93 | -2.08 | -2.08 |
| 21304029 | -1.15 | -1.22 | -1.41 | -1.16 | -1.08 | -1.61 | -2.34 |
| 21304030 | -1.75 | -1.61 | -1.51 | -1.18 | -1.11 | -1.98 | -2.1 |
| 21304031 | -1.74 | -1.60 | -1.51 | -1.00 | -0.83 | -1.98 | -3.28 |
| 21304032 | -1.43 | -1.32 | -1.26 | -0.87 | -0.76 | -1.68 | -2.76 |
| 21304033 | -1.54 | -1.40 | -1.31 | -0.94 | -0.85 | -1.43 | -2.53 |
| 21304034 | -1.49 | -1.35 | -1.25 | -0.92 | -0.85 | -2.38 | -2.1 |
| 21304035 | -1.49 | -1.35 | -0.87 | -0.93 | -0.86 | -3.18 | -1.6 |
| 21304036 | -1.64 | -1.45 | -1.31 | -0.93 | -0.86 | -1.73 | -2.1 |
| 21304037 | -1.64 | -1.45 | -1.31 | -0.84 | -0.72 | -1.35 | -1.99 |
| 21304038 | -1.68 | -1.53 | -1.43 | -1.10 | -1.03 | -1.59 | -1.84 |
| 21304039 | -1.35 | -1.28 | -1.22 | -1.88 | -0.77 | -1.06 | -2.21 |
| 21304040 | -1.89 | -1.62 | -1.43 | -0.78 | -0.64 | -0.84 | -2.14 |
| 21304041 | -1.45 | -1.35 | -1.28 | -0.90 | -0.78 | -3.35 | -1.71 |
| 21304042 | -1.37 | -1.30 | -1.24 | -1.02 | -0.95 | -1.33 | -1.33 |
| 21304043 | -1.62 | -1.45 | -1.33 | -0.91 | -0.81 | -2.30 | -1.15 |
| 21304044 | -1.39 | -1.34 | -1.31 | -1.02 | -0.90 | -1.36 | -2.76 |
| 21304045 | -1.87 | -1.67 | -1.52 | -1.22 | -1.21 | -1.23 | -2.58 |
| 21304046 | -1.91 | -1.67 | -1.51 | -1.14 | -1.12 | -2.16 | -2.41 |
| 21304047 | -1.31 | -1.26 | -1.22 | -1.00 | -0.92 | -1.85 | -2.24 |
| 21304048 | -1.10 | -1.12 | -1.13 | -0.96 | -0.87 | -0.19 | -2.24 |
| 21304049 | -1.46 | -1.32 | -1.24 | -0.89 | -0.81 | -1.35 | -1.35 |
| 21304050 | -1.04 | -1.29 | -1.13 | -1.12 | -1.08 | -1.29 | -1.53 |
| 21304051 | -1.43 | -1.37 | -1.32 | -1.10 | -1.03 | -1.48 | -1.313 |
| 21304052 | -1.42 | -1.34 | -1.29 | -1.18 | -1.18 | -2.29 | -2.41 |
| 21304053 | -1.16 | -1.15 | -1.14 | -0.91 | -0.80 | -2.08 | -1.81 |
| 21304054 | -1.27 | -8.36 | -1.21 | -0.92 | -0.80 | -2.00 | -2.35 |
| 21304055 | -1.82 | -1.57 | -1.40 | -0.94 | -0.86 | -0.34 | -2.1 |
| 21304056 | -1.94 | -1.63 | -1.41 | -0.91 | -0.87 | 0.07 | -1.86 |
| 21304057 | -1.64 | -1.45 | -1.32 | -0.92 | -0.84 | -2.38 | -1.98 |
| 21304058 | -1.73 | -1.58 | -1.47 | -1.10 | -1.02 | -2.00 | -2.79 |
| 21304059 | -1.44 | -1.35 | -1.29 | -1.07 | -1.03 | -1.50 | -2.26 |
| 21304060 | -2.10 | -1.52 | -1.59 | -0.98 | -0.88 | -0.03 | -2.54 |
| 21304061 | -1.40 | -1.31 | -1.26 | -0.93 | -0.82 | -1.85 | -1.96 |
| 21304062 | -1.05 | -1.21 | -1.11 | -1.05 | -1.01 | -1.34 | -1.84 |
Continued 7
| 21304063 | -1.41 | -1.31 | -1.24 | -0.98 | -0.92 | -1.40 | -1.15 |
| 21304064 | -0.95 | -1.03 | -1.07 | -0.95 | -0.84 | -1.13 | -1.14 |
| 21304065 | -1.48 | -1.40 | -1.35 | -1.04 | -0.94 | -0.02 | -2.94 |
| 21304066 | -1.46 | -1.37 | -1.31 | -1.09 | -1.04 | -0.91 | -2.56 |
| 21304067 | -1.28 | -1.23 | -1.21 | -1.00 | -0.93 | -0.63 | -2.34 |
| 21304068 | -1.56 | -1.40 | -1.31 | -0.95 | -0.88 | -0.05 | -2.18 |
| 21304069 | -1.26 | -1.20 | -1.15 | -0.84 | -0.73 | -0.99 | -2.09 |
| 21304070 | -1.15 | -1.13 | -1.10 | -0.85 | -0.74 | 0.10 | -1.96 |
| 21304071 | -2.01 | -1.69 | -1.49 | -0.93 | -0.86 | -1.23 | -1.21 |
| 21304072 | -1.98 | -1.74 | -1.58 | -1.04 | -0.93 | -1.24 | -2.96 |
| 21304073 | -2.01 | -1.78 | -1.64 | -1.13 | -1.04 | -1.10 | -2.84 |
| 21304074 | -1.96 | -1.71 | -1.54 | -0.95 | -0.82 | -2.56 | -2.33 |
| 21304075 | -1.48 | -1.39 | -1.32 | -1.03 | -0.94 | -2.04 | -2.3 |
| 21304076 | -2.01 | -1.70 | -1.49 | -0.94 | -0.86 | -1.38 | -2.03 |
| 21304077 | -1.78 | -1.63 | -1.52 | -1.07 | -0.95 | -1.58 | -2.19 |
| 21304078 | -1.54 | -1.45 | -1.39 | -1.03 | -0.91 | -2.85 | -1.25 |
| 21304079 | -1.35 | -1.30 | -1.26 | -1.00 | -0.91 | -2.41 | -2.79 |
| 21304080 | -1.58 | -1.44 | -1.34 | -0.99 | -0.91 | -1.95 | -2.7 |
| 21304081 | -1.10 | -1.12 | -1.13 | -0.96 | -0.87 | -2.33 | -2.59 |
| 21304082 | -1.32 | -1.26 | -1.22 | -1.13 | -1.13 | -2.23 | -2.36 |
| 21304083 | -0.99 | -1.04 | -1.07 | -0.95 | -0.85 | -1.35 | -2.21 |
| 21304084 | -1.08 | -1.10 | -1.12 | -0.94 | -0.84 | -2.33 | -2.75 |
| 21304085 | -1.67 | -1.54 | -1.45 | -1.17 | -1.13 | -2.01 | -2.68 |
| 21304086 | -1.49 | -1.36 | -1.26 | -0.86 | -0.75 | -1.63 | -2.15 |
| 21304087 | -1.15 | -1.13 | -1.10 | -0.85 | -0.74 | -1.60 | -2.58 |
| 21304088 | -1.47 | -1.42 | -1.40 | -1.16 | -1.07 | -1.98 | -2.11 |
| 21304089 | -1.44 | -1.40 | -1.38 | -1.13 | -1.04 | -2.35 | -1.96 |
| 21304090 | -2.18 | -1.88 | -1.67 | -1.23 | -1.22 | -2.69 | -3.26 |
| 21304091 | -1.40 | -1.34 | -1.31 | -1.14 | -1.10 | -2.36 | -2.35 |
| 21304092 | -1.78 | -1.60 | -1.49 | -1.07 | -0.99 | -1.48 | -2.21 |
| 21304093 | -1.62 | -1.48 | -1.38 | -1.05 | -0.98 | -2.54 | -1.9 |
| 21304094 | -1.45 | -1.35 | -1.29 | -1.03 | -0.96 | -2.48 | -1.21 |
| 21304095 | -1.60 | -1.45 | -1.35 | -0.98 | -0.89 | -2.36 | -1.96 |
| 21304096 | -1.41 | -1.32 | -1.26 | -1.16 | -1.17 | -2.23 | -1.71 |
| 21304097 | -1.43 | -1.32 | -1.25 | -0.77 | -0.59 | -2.53 | -0.91 |
| 21304098 | -1.54 | -1.38 | -1.28 | -1.05 | -1.04 | -2.09 | -2.73 |
| 21304099 | -1.65 | -1.51 | -1.41 | -1.17 | -1.14 | -1.98 | -2.74 |
| 21304100 | -1.21 | -1.20 | -1.19 | -0.94 | -0.82 | -2.81 | -2.16 |
| The average error of indication | -1.48 | -1.45 | -1.31 | -1.01 | -0.91 | -1.76 | -2.23 |
| Ageing parameter | -1.14 | -1.14 | -1.16 | -1.20 | -1.20 | -1.66 | -1.74 |
According to the data in above-mentioned table 1 to table 7 in plane coordinate system with flow point as X-axis coordinate, error of indication E be Y
Axial coordinate can obtain curve of error of the tested diaphragm gas meter 3 in different running-in amounts by trace-point method.As shown in figure 3, figure
For carrying out curve of error during running-in, L1 represents running-in 400m to middle L0 signs diaphragm gas meter 33Curve of error afterwards, L2 are represented
Running-in 1000m3Curve of error afterwards, L3 represent running-in 2000m3Curve of error afterwards, L4 represent running-in 4000m3Error afterwards is bent
Line, L5 represent running-in 6000m3Curve of error afterwards, L6 represent running-in 8000m3Curve of error afterwards.
According to the ageing parameter in above table, with flow point as X-axis coordinate, ageing parameter ξ is Y-axis coordinate, same logical
Crossing trace-point method can obtain out aging curve of the diaphragm gas meter 3 after certain running-in amount being run through using a period of time.Such as Fig. 4 institutes
Show, in figure, K1 represents running-in 400m3Aging curve afterwards；K2 represents running-in 1000m3Aging curve afterwards；K3 represents running-in
2000m3Aging curve afterwards；K4 represents running-in 4000m3Aging curve afterwards；K5 represents running-in 6000m3Aging curve afterwards；
K6 represents running-in 8000m3Aging curve afterwards.
3rd, main control module is set on diaphragm gas meter 3 as shown in Figure 1, sets between the diaphragm gas meter and main control module
Temperature sensor, pressure transducer, collection transport module and valve is equipped with, wireless remote transmission mould on main control module, is additionally provided with
The intelligent objects such as block, amount of money pre-payment/amount of money payment module, double interface datas storage interactive module, electronic seal module；Described
Compensation of ageing module, electronic display module and power supply is provided with main control module.
4th, by the curve of error for obtaining and aging curve in 3 different running-in amounts of diaphragm gas meter and the corresponding compensation of flow point
In the compensation of ageing module of parameter typing main control module, in the complete different running-in amounts of 3 running-in of diaphragm gas meter and in not cocurrent flow
During amount point, the compensation that the corresponding error of indication is carried out by compensation of ageing module to the stoichiometric number of diaphragm gas meter 3 so that membrane type fires
The stoichiometric number of gas meter 3 is identical with gas actual volume；Then shown by electronic display module.
The compensating parameter that above-mentioned curve of error and aging curve are obtained is entered in main control module by computer, is led to
Crossing reading when main control module exports gas with corresponding flow point in use for some time to diaphragm gas meter 3 carries out indicating value
The compensation of error, so that accurate to the stoichiometric number of gas, reduce transportation difference rate.Finally realized to membrane type by above-mentioned steps
The correction of the reading in use for some time of gas meter, flow meter 3, diaphragm gas meter 3 run through certain running-in amount after reading still accurately, keep away
Exempt from diaphragm gas meter to be changed as mechanical wear causes negative error.The service life of diaphragm gas meter is extended,
The use cost of diaphragm gas meter is reduced, the economic worth of diaphragm gas meter is improve；Avoid replacing diaphragm gas meter to make
Into waste.
Claims (6)
1. the measuring accuracy control method of diaphragm gas meter longtime running, it is characterised in that comprise the following steps：
A, sizing batch production diaphragm gas meter (3) through dispatching from the factory error in dipping test after enter storehouse product in, with
Machine chooses one group as being test for diaphragm gas meter (3)；Select the testing location of test diaphragm gas meter (3) and be ready to
Test device, the test device include that compressed air source unit (1) and standard set-up (2), the environment of testing location must fully meet
The regulation of JJG577-2012 standards；I.e. atmospheric pressure be 86～106kPa, temperature be 20 ± 2 DEG C, relative humidity be 45%～
75%, the temperature difference at temperature and diaphragm gas meter at standard set-up is less than 1 DEG C；
B, a certain amount of gas is passed sequentially through standard set-up in the different flow point for being test for diaphragm gas meter (3) respectively
(2) and diaphragm gas meter (3), in the actual volume value that standard set-up (2) place's measurement obtains gas, at diaphragm gas meter (3) place
The metering numerical value of gas volume is obtained, list is calculated by the actual volume value of gas and the metering numerical value of diaphragm gas meter (3)
The error of indication of individual diaphragm gas meter (3) in each flow point；Once institute is calculated in each flow point of diaphragm gas meter (3)
There are meansigma methodss of the diaphragm gas meter (3) in the flow point error of indication, obtain all diaphragm gas meter (3) at each flow point
The average error of indication, by all diaphragm gas meters (3) in the average error of indication of each flow point, obtains diaphragm gas meter
(3) curve of error；The curve of error refers to that diaphragm gas meter (3) corresponding average error of indication in different flow point exists
The full curve formed in coordinate system；
C, when the complete different running-in amounts of diaphragm gas meter (3) running-in are test for, repeat step B obtains diaphragm gas meter (3) and exists
When completing different running-in amounts, single diaphragm gas meter (3) error of indication and all diaphragm gas meters (3) in different flow point
The corresponding average error of indication at each flow point；Diaphragm gas meter (3) is obtained by the average error of indication and completes difference
Curve of error during running-in amount；
The mistake of the diaphragm gas meter (3) of D, the diaphragm gas meter (3) obtained in step B and C after different running-in amounts are completed
Difference curve, obtains aging curve of the diaphragm gas meter (3) when different running-in amounts are completed, and the aging curve refers to diaphragm gas
, when certain running-in amount is completed, on curve of error, the average error of indication of different flow point is relative to corresponding original flat for table (3)
The line curve that the side-play amount of the error of indication is formed in coordinate system；The original average error of indication is referred to and does not carry out running-in
Diaphragm gas meter (3) the average error of indication；
E, main control module is set diaphragm gas meter (3) is upper, on the main control module, is provided with compensation of ageing module, electronical display
Module and power supply；
F, by the curve of error for obtaining and aging curve in diaphragm gas meter (3) difference running-in amount and the corresponding compensation ginseng of flow point
In the compensation of ageing module of number typing main control module, in the complete different running-in amounts of diaphragm gas meter (3) running-in and in not cocurrent flow
During amount point, the compensation that the corresponding error of indication is carried out by compensation of ageing module to the stoichiometric number of diaphragm gas meter (3) so that membrane type
The stoichiometric number of gas meter, flow meter (3) is identical with gas actual volume；Then shown by electronic display module.
2. the measuring accuracy control method of diaphragm gas meter longtime running as claimed in claim 1, it is characterised in that：Step B
The curve of error of middle test diaphragm gas meter (3) adopts following steps：
B1, the temperature that the diaphragm gas meter (3) of tested person is stabilized to testing location constant temperature more than four hours；
B2, before testing begins, by the diaphragm gas meter (3) of tested person with maximum stream flow operation no less than 50 times of revolution volumes
Test air；
B3, diaphragm gas meter (3) flow be respectively qmin, 3qmin, qt, 0.2qmax, 0.4qmax, 0.7qmax and qmax
Flow point will measure obtain actual volume a certain amount of volume air stream through tested person diaphragm gas meter (3), recording film
The volume that the enumerator of formula gas meter, flow meter (3) shows；Each diaphragm gas meter (3) carries out n times, 3≤N, N respectively in different flow point
For integer, and guarantee to test flow every time different, i.e., follow-on test is carried out with identical total flow not in same traffic point；
The temperature of the air is identical with the temperature of testing location；Wherein qmin represents that minimum discharge, qt represent metered flow, qmax tables
Show maximum stream flow；
B4, the error of indication for being averagely worth to each flow point for calculating each flow point n times test result respectively；Tested
Diaphragm gas meter (3) each flow point at calculate the error of indication of all diaphragm gas meters (3) in same flow point respectively
Meansigma methodss, obtain the corresponding average error of indication at all diaphragm gas meters (3) each flow points, by the average error of indication
Obtain the curve of error of diaphragm gas meter (3).
3. the measuring accuracy control method of diaphragm gas meter longtime running as claimed in claim 1, it is characterised in that：The step
The error of indication is calculated in rapid B to calculate using below equation：
In formula：The error of indication of E single measurements, unit are %；VmThe indicating value of diaphragm gas meter, unit are dm3；VrefLogical
The gas actual value of diaphragm gas meter is crossed, unit is dm3；
The entrance point of measurement diaphragm gas meter and temperature, the pressure at standard set-up (2) place, enter trip temperature, pressure as follows
Revise；
In formula：VSThe indicating value of standard set-up (2), unit is dm3；PsaThe absolute pressure at standard set-up (2) place, unit is Pa；
TSaThe thermodynamic temperature at standard set-up (2) place, unit is K；PmaThe absolute pressure of diaphragm gas meter entrance point, unit is
Pa；TmaThe thermodynamic temperature of diaphragm gas meter entrance point, unit are K.
4. the measuring accuracy control method of diaphragm gas meter longtime running as claimed in claim 1, it is characterised in that：In step
Randomly select the method for diaphragm gas meter (3) being test for using randomly selecting described in A, random number passes through the table of random numbers, dice
Son or playing card are produced.
5. the measuring accuracy control method of the diaphragm gas meter longtime running as described in claim 1,2,3 or 4, its feature exist
In：Test device described in step A includes compressed air source unit (1), standard set-up (2), flow control valve (4)；The source of the gas dress
Put (1), standard set-up (2), sequentially pipe connects diaphragm gas meter (3), the outlet of diaphragm gas meter (3) is provided with flow control valve
(4).
6. the measuring accuracy control method of the diaphragm gas meter longtime running as described in claim 1,2,3 or 4, its feature exist
In：Diaphragm gas meter (3) be provided with and main control module between temperature sensor, pressure transducer, collection transport module with
And valve, wireless remote transmission module, amount of money pre-payment/amount of money payment module, the storage of double interface datas is additionally provided with main control module
Interactive module, electronic seal module.
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| CN105841765A (en) * | 2016-05-27 | 2016-08-10 | 中国计量大学 | Diaphragm type gas meter revolution volume acquisition method based on short-time self-correlation algorithm |
| CN107702770A (en) * | 2017-11-22 | 2018-02-16 | 廊坊润能燃气设备有限公司 | The detection means and its method of testing of core of membrane type gas meter rate curve |
| CN109960236A (en) * | 2017-12-25 | 2019-07-02 | 新智数字科技有限公司 | The test method and system of gas meter controller |
| CN108168669B (en) * | 2018-02-12 | 2023-11-03 | 西南交通大学 | Weighing device for goods of truck |
| CN108444578B (en) * | 2018-07-02 | 2021-02-26 | 山东拙诚智能科技有限公司 | Online monitoring method for metering performance of membrane type gas meter |
| CN114088171B (en) * | 2021-11-20 | 2024-08-30 | 重庆前卫表业有限公司 | Film type gas meter movement error adjustment system and adjustment method |
| CN116718238B (en) * | 2023-08-10 | 2023-10-13 | 广州金燃智能系统有限公司 | Gas meter system for improving long-term running charging precision |
| CN117433615B (en) * | 2023-11-28 | 2024-07-05 | 浙江荣鑫智能仪表股份有限公司 | Gas meter correction method, system, electronic equipment and medium |
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