CN107702852A - Digital precision pressure meter batch measurements verification system and method - Google Patents
Digital precision pressure meter batch measurements verification system and method Download PDFInfo
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- CN107702852A CN107702852A CN201710954338.4A CN201710954338A CN107702852A CN 107702852 A CN107702852 A CN 107702852A CN 201710954338 A CN201710954338 A CN 201710954338A CN 107702852 A CN107702852 A CN 107702852A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
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Abstract
The present invention relates to a kind of digital precision pressure meter batch measurements verification system and method, determines prepressing device, media Containers, standard digital precision pressure gauge, manual fine-tuning precompressed hand pump, multiple stop valves, multiple tested meter connectors and multiple first single table fine setting hand pumps that system includes being connected on pressure piping；Also include control system and collection key；Control system includes control unit, Data Enter unit, data acquisition unit and data processing unit；Control unit is connected with prepressing device；Data Enter unit is used for typing checklist and standard digital precision pressure gauge information；Data acquisition unit is connected by gathering key with standard digital precision pressure gauge；Data processing unit is used to analyze and the data message of processing data collecting unit collection.The present invention solves that existing digital precision pressure meter measurement verification efficiency is low, can not realize digitized problem, and the problem of eliminate existing calibration method artificial pro-active intervention.
Description
Technical field
The invention belongs to measurement verification field, more particularly to a kind of digital precision pressure meter batch measurements verification system and side
Method.
Background technology
Existing digital precision pressure meter measurement and examination method is to arrive single tested digital precision pressure meter information solicitation
In papery original record, calculate and fill in the limits of error of tested digital precision pressure meter, maximum allowable hysterisis error etc.；
Standard (including piston gage, digital precision pressure meter, pressure controller etc.) relevant information is filled in the original note of papery
In record；Single tested digital precision pressure meter is effectively connected with standard scale, respectively by standard scale pressure-loaded to each
Point is examined and determine, reading is carried out according to its indicating value to checklist, carries out all data for each putting of paper record, after the completion of data record
The checklist maximum error of indication, maximum hysterisis error are calculated, the theoretical maximum allowable error of information and checklist is calculated by more than
It is compared etc. information, judges the measurement verification result of tested digital precision pressure meter.Original record is subjected to signature archive again,
The effective information of original record is entered into the electronic stencil of calibration certificate (rejection notice of verification) and generates digital certificates, so
Authorize and printed afterwards.
Problems be present in the above method：
First, miscellaneous original record writing, it is a main problem for influenceing its measurement verification efficiency.Due to writing
More, calculating is more, and human factor introduces error or the probability of mistake is also very big.
Secondly, caused by the personal habits of verification worker, for measurement result in limit of error point (limits of error)
The situation of " looking for " measurement result is also to influence a key factor of final metric results.
Finally, metering process can not realize that digitlization, intelligent and mass are also hinder pressure magnitude transmission one
Bottleneck.And existing pressure measurement is caused to belong to a key factor of labor intensive present situation.
The content of the invention
The invention provides a kind of digital precision pressure meter batch measurements calibration method and system, solves existing numeral
Precision pressure gauge measurement verification efficiency is low, can not realize digitlization, intelligent and mass, error introduce the problems such as probability is big,
And the problem of eliminating existing calibration method artificial pro-active intervention.
The present invention technical solution be to provide a kind of digital precision pressure meter batch measurements verification system, its it is special it
Be in：Including prepressing device 1, media Containers 2, standard digital precision pressure gauge 3, the manual fine-tuning being connected on pressure piping
Precompressed hand pump 4, multiple stop valves 5, multiple tested meter connectors 6 and multiple first single table fine setting hand pumps 8；
Also include control system 10 and collection key 9, each 5, first single tables of the tested corresponding one group of stop valve of meter connector 6
Finely tune hand pump 8 and a collection key 9；
Above-mentioned control system 10 includes control unit, Data Enter unit, data acquisition unit and data processing unit；
Above-mentioned control unit is connected with prepressing device, for controlling prepressing device adjustment precision pressure gauge batch to examine and determine the inspection
Determine system pressure；Above- mentioned information typing unit is used for typing checklist and standard digital precision pressure gauge information, and according to tested
Table information divides the calibrating point of checklist automatically；Above-mentioned data acquisition unit is connected by gathering key with standard digital precision pressure gauge
Connect, for gathering the real-time pressure data information of standard digital precision pressure gauge；Above-mentioned data processing unit is used to analyze and locate
Manage the data message of data acquisition unit collection.
Preferably, in addition to second single table for adjusting tested meter pressure finely tunes hand pump 81.With first single table fine setting hand
Pump 8 is used cooperatively, and the first single table fine setting hand pump can be such that regulation checklist arrives by cautious position, and second single table finely tunes hand pump can
To adjust more accurate location of reading, ensure the accuracy of measurement result.
Preferably, decompression protection valve is also included in above-mentioned pressure piping.
Preferably, above-mentioned prepressing device is vavuum pump or compression pump.
The present invention also provides a kind of digital precision pressure based on above-mentioned digital precision pressure meter batch measurements verification system
Table batch measurements calibration method, comprises the following steps：
1) by range classification checklist, precision pressure gauge is arranged on after the checklist of same range section is carried out into visual examination
In batch verification system；
2) the checklist information of Data Enter unit typing difference installation site；
3) the standard digital precision pressure gauge in Data Enter unit automatic identification precision pressure gauge batch verification system, sentences
Whether the information of disconnected standard digital precision pressure gauge matches with checklist, if standard digital precision pressure gauge and checklist
Match somebody with somebody, then automatic input standard digital precision pressure gauge information；Otherwise, standard digital precision pressure gauge, repeat step 3 are changed)；
4) the typing information of existing vertification regulation and checklist, each checklist of Data Enter automatic cell generation are combined
No data precision pressure gauge original record, and generate the calibrating point of checklist；For the checklist of non-standard range, draw manually
Divide input calibrating point；
5) zero drift detect, standard digital precision pressure gauge and checklist are reset, respectively 0min, 15min,
30min, 45min, 60min time point, regulation manual fine-tuning precompressed hand pump make current checklist indicating value be shown as zero, data acquisition
Unit gathers standard digital precision pressure gauge data；Provide to determine whether checklist zero drift is qualified according to vertification regulation；Zero
The worst error of position drift is if greater than the half of the limits of error of checklist, then checklist is unqualified；If zero
The worst error of position drift then judges the zero drift of this checklist no more than the half of the limits of error of checklist
To be qualified；
6) pressure in digital precision pressure meter batch verification system pressure piping is adjusted to by prepressing device examine and determine point
Near；Precompressed hand pump is manually finely tuned again to be adjusted to pressure in system to examine and determine point, and it is micro- to adjust first and second single table again
Hand pump is adjusted, making each checklist, accurately calibrating point is arrived in instruction；
Data acquisition unit gathers real time data of each checklist in the standard digital precision pressure gauge of each calibrating point,
Each calibrating point data gathers once every time；
7) after all calibrating points of checklist have been examined, all data in data acquisition unit are preserved, as initial original
Begin record；
8) data processing unit carries out data processing to initial original record, is repaiied according to data pattern as defined in code
About, the amendment data to match with vertification regulation are obtained, as final original recorded data；
9) data processing unit is by process, the backhaul data minute of the amendment data of each calibrating point of each checklist
Analysis, obtains the actual worst error and hysterisis error of each calibrating point of checklist, in the original typing information with reference to checklist
The limits of error and maximum allowable hysterisis error, be compared, judge verification result, if qualified, complete calibrating, it is raw
Into final original record, wait to veritify；If it is unqualified and can not adjusting, indicate unqualified reason, then complete calibrating, generate final former
Begin record, waits to veritify；If it is unqualified but can adjusting, next group validation program is entered after adjusting；
10) final original record information is veritified, completes to veritify, generate copending calibration certificate, it is most final at last
Original record and copending calibration certificate carry out the preservation of electronics shelves and exported, and print and carry out papery final original record and deposit
Shelves, copending calibration certificate upload the metering management system of metrological service, and work is completed.
Above-mentioned steps 7) be specially：Provide to combine initial original record according to vertification regulation, initial original record is got the bid
The data of quasi- digital precision pressure meter are corresponding to each corresponding calibrating point, the revision of the convention checklist corresponding to the calibrating point data,
Tested meter reading carries out data processing according to minimum division value reading principle, obtains the data to match with vertification regulation.
Above-mentioned checklist information includes calibrating date, temperature, humidity, censorship unit, tested table name, factory number, system
Make business, measurement range, class of accuracy, scale division value, calibrating medium, visual examination；
Standard digital precision pressure gauge information include standard title, model, measurement range, manufacturer, class of accuracy,
Certificate number, the term of validity.
Preferably, during step 2) typing checklist information, the identical information with a batch of checklist is disposably united
One typing.
Preferably, step 2) also include judge checklist information whether the complete step of typing.
The beneficial effects of the invention are as follows：
1) efficiency is greatly improved, greatly shortens expense during tested digital precision pressure meter measurement verification
Shi Huanjie's is time-consuming, has greatly played subjective initiative of the measurement verification personnel during measurement verification, greatly improves
The efficiency of this respect work.
2) verification result is accurate
Remove the influence of subjective determination, for qualified with unqualified critical point tested digital precision pressure meter, typically
In the case of, measurement verification personnel can go " looking for ", subjective to go for qualified or look for unqualified.And avoided in this device
The generation of this case, directly point collection key, carry out data acquisition.So shadow in terms of avoiding problems this subjective determination
Ring.
3) it is simple to operate, for, it is necessary to adjust manual fine-tuning precompressed hand pump, all calibrating points measure during measurement verification
Database preparation generation original record after having examined and determine.People is veritified to complete to automatically generate copending certificate after veritifying.
4) original record, it is abundant in content, avoid it is unqualified after adjusting again tested digital precision pressure meter original record
It is in disorder because it is a collection of inspection with model much be detected digital precision pressure meter, to unqualified tested digital precision
Need to do once complete measurement verification (to the demand of measurement verification result retrospect) before pressure gauge adjusting, this time completely has
The number of non-compliances evidence of record, this tested digital precision pressure meter of measurement verification personnel intuitive judgment can be helped whether adjustable why
Adjust.The possibility of adjusting in place greatly increases.In addition for tested digital precision pressure meter qualified after adjusting
Number of non-compliances is that adjusting reason is shown in original record according to not being shown as hiding data, will not thus cause data
Disorder, but number of non-compliances is according to can recall when need.It is more humane, rationalize, standardization.
5) strong adaptability, the specifications and models for being detected digital precision pressure meter, the old and new's degree, recognizable degree etc. do not have
Limitation, visual examination are closed, and joint model etc. has extremely strong adaptability.
6) high safety, original record and certificate for generation can not be changed in addition to administrator right, all data
All it is the firsthand data, preferably embodies and measure the solemn sacred one side of this industry.
7) automation digital intelligent mass is realized, allows the measurement verification of digital precision pressure meter to realize automation number
Word intellectuality mass, the requirement of operating efficiency, and the direction of pressure measurement future development are not improved still.
Brief description of the drawings
Fig. 1 is digital precision pressure meter batch measurements verification system schematic diagram；
Fig. 2 is control system flow chart of data processing figure；
Fig. 3 is digital precision pressure meter batch measurements calibration method flow chart；
Fig. 4 is that original record inquires about schematic diagram.
Reference is in figure：1- prepressing devices, 2- media Containers, 3- standard digital precision pressure gauges, 4- manual fine-tunings
Precompressed hand pump, 5- stop valves, 6- are detected meter connector, 7- decompression protection valves, and first single tables of 8- finely tune hand pump, and second single tables of 81- are micro-
Adjust hand pump, 9- collection keys, 10- control systems, 11- printers.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
It will be seen from figure 1 that the system of the present embodiment includes prepressing device 1, the medium being successively set on pressure piping
Container 2, standard digital precision pressure gauge 3, manual fine-tuning precompressed hand pump 4, decompression protection valve 7, in addition to stop valve 5, checklist
Joint 6, the first single table fine setting hand pump 8 and collection key 9, it is five to be detected the meter connector 6 i.e. clamping device of checklist, i.e., once may be used
(meter connector can be detected according to increase is actually needed to access the equal precision pressure gauge progress measurement verification of five ranges simultaneously
Number), the corresponding one group of stop valve of each checklist, first single table fine setting hand pump and a collection key；Also include being used for controlling
The control system of whole system work processed and the printer for printing papery and retaining original record.Also include being used to adjust quilt
Examine second single table fine setting hand pump 81 of meter pressure.It is used cooperatively with the first single table fine setting hand pump 8, first single table fine setting hand pump can be with
Regulation checklist is set to adjust more accurate location of reading to by cautious position, second single table fine setting hand pump, ensure measurement
As a result accuracy.
Control system includes control unit, Data Enter unit, data acquisition unit and data processing unit；
Control unit is connected with prepressing device, for controlling prepressing device regulating system pressure；Data Enter unit is used for
Typing checklist and standard digital precision pressure gauge information, and the calibrating point of checklist is divided according to checklist information automatically；Number
It is connected according to collecting unit by gathering key with standard digital precision pressure gauge, criterion numeral a little is each examined and determine for gathering checklist
The data message of word precision pressure gauge；Data processing unit is used for the data message of analyze data collecting unit collection.
Control unit controls prepressing device, and Self-pressurizing agri or pressure release are carried out to the pressure of system according to each calibrating point,
Pressure in whole pressure piping is set to reach as defined in calibrating point near pressure value.Solve because pressure-bearing cavity is larger in pipeline
When, manual squeeze time is long or the problem of manual precompressed difficulty (when precompressed cavity is excessive, squeeze time in short-term, manual precompressed is very
Arduously；When precompressed cavity is too small, squeeze time is long, manual precompressed is relatively saved the strength).For the gas of negative pressure metering calibrating be present
Body medium apparatus, prepressing device are a vavuum pump, are pressurization during rotating forward, to vacuumize ((- 0.1~6) MPa gases during reversion
Estrade).
The calibrating medium of measurement verification system can be gas, water or oil, when it is gas to examine and determine medium, media Containers 2
Pressure source is provided by whole system of nitrogen cylinder；When it is water to examine and determine medium, media Containers are using aqueous medium container as whole system
Pressure source is provided；When it is oily to examine and determine medium, media Containers provide pressure source using oil medium container as whole system.
Standard digital precision pressure gauge, it is the measurement criteria of the system for the core component of the system.This table passes through collection
Key is connected with the data acquisition unit in control system, the normal data of the real-time pressure for measuring whole pressure system, number
Gather the data of standard digital precision pressure gauge 3 in real time according to collecting unit.
According to the model of each checklist, range, the difference of medium is examined and determine.The present embodiment select 0.01 grade can cover (-
0.1~100) digital precision pressure meter of MPa gamut section is standard digital precision pressure gauge as standard so that this is
System meets：Calibrating pressure is -0.1~100MPa, and calibrating medium is oily, water and the digital precision of 0.05 and ratings above of gas
The measurement verification of pressure gauge.
According to the actual use situation of checklist, it is determined that examining and determine medium and standard, when checklist is gas meter, this system
It is supporting be arranged to (- 0.1~6) MPa gas containers, standard covering (- 0.1~6) MPa gamuts；When checklist is water meter
When, the supporting of this system is arranged to (0~100) MPa hydraulic pressure containers, standard covering (0~100) MPa gamuts；Work as checklist
For oil meter when, the supporting of this system is arranged to (0~100) MPa oil pressure estrades, standard covering (0~100) MPa gamuts.
The effect of manual fine-tuning precompressed hand pump 4 is that the standard of whole system is more accurately adjusted after prepressing device precompressed
Numerical value of the pressure data closer to calibrating point.
Stop valve, for the adjustment and protection to whole system function, the quantity for accessing checklist can be adjusted, system goes out
The bad situation of existing a certain position seals, this position is isolated with whole system, protects positive system normal operation.
Protection of the effect of decompression protection valve mainly to whole system, standard digital precision pressure gauge and checklist, such as
When fruit is detected pressure gauge maximum range 104% because maloperation causes system pressure to be more than, this device releasing pressure automatically, when pressure is small
Pressure release is automatically stopped when the 90% of current setting pressure.
First and second single table fine setting hand pump, is mainly used in adjusting pressure to corresponding checklist when to table.
Gather key, mainly standard digital precision pressure gauge of the control data collecting unit to correspondence position corresponding calibrating point
Data be acquired.
Printer, it is mainly used in printing the original record that papery is retained.
Specific calibration operation process is as shown in Figures 2 and 3：
After range classification checklist, to being arranged on present invention system after the checklist progress visual examination of same range section
In the snap joint of system, filling or be underfilled with tested position (stop valve of the closing being underfilled with without folder checklist) can enter
OK.
Verification worker is logged in by safety verification or password password is examining and determine operator interfaces login system, and (Admin Account is this
Unit, which obtains pressure measurement credentials, can carry out testing person's information whole typing of this work, a password of people one).
Data Enter
After the completion of login, Data Enter unit according to clamping position, believe one by one by checklist of the typing clamping on this device
Breath, while each checklist of typing is in the corresponding loading position of this device.In order to ensure complete typing checklist information, do not go out
Existing information is omitted, and control system enters row information input in the form of pop-up dialogue box, sets drop-down menu, typing before preservation
Information for being selected in follow-up Input Process.Same batch carries out the identical letter of the checklist of measurement verification simultaneously
Breath can disposably unify input.Data Enter unit judged checklist Data Enter integrality automatically, if there is
Information is omitted, system prompt side information, and supplement can completely carry out further work automatically.
After checklist Data Enter is completed, Data Enter unit automatic identification standard is standard digital precision pressure
Table, typing standard digital precision pressure gauge information, standard digital precision pressure gauge information is in each standard digital precision pressure gauge
Censorship is logged in by standard digital precision pressure gauge administrator interfaces after completing and is updated.
Data Enter unit judges standard digital precision pressure gauge of this batch checklist if appropriate for clamping (with the system
Connection, directly reads standard digital precision pressure gauge information), if mismatched, prompt to change standard digital precision pressure gauge.
Change and complete, matched again, matching completes that the nothing of each corresponding clamping position checklist can be automatically generated
Data precision pressure gauge original record, and the calibrating point of checklist is generated, the calibrating point for nonstandard range section can be carried out
Division calibrating point manually.
The pattern of data inputting is mainly based on the data inputting pattern of calibration certificate, in order to preferably coordinate existing metering
The development of technology, using the data inputting pattern of calibration certificate as auxiliary (preliminary data typing pattern), in case particular/special requirement uses.
Data acquisition
To do is to zero drift first, after normal data precision pressure gauge and checklist are all reset, respectively 0min,
Gathered data when 15min, 30min, 45min, 60min, acquisition method：Each acquisition time adjustment manual fine-tuning precompressed hand pump
Current checklist indicating value is shown as zero, press collection key, gather normal data precision pressure gauge data.Advised according to vertification regulation
Half of the worst error requirement of zero setting drift no more than the limits of error of checklist.The maximum of zero drift misses
Difference is if greater than the half of the limits of error of checklist, then checklist is unqualified；If the maximum of zero drift misses
For difference no more than the half of the limits of error of checklist, then the zero drift for judging this checklist is qualified.
Calibrating, data acquisition
By the preliminary precompressed of prepressing device, then manually pressure in system is adjusted to by fine setting precompressed hand pump exactly
Point is examined and determine, first and second single table fine setting hand pump is adjusted again, makes each checklist indicating value accurately indicate to examine and determine point value, data are adopted
Collect the unit collection corresponding real time data of normal data precision pressure gauge.Each calibrating point data gathers once every time, really
The data of fixed this measurement verification calibrating point.
If the Real-time Error of checklist is significantly greater than the theoretical maximum allowable error of checklist, checklist is directly entered
Reading numerical value, gather corresponding standard scale data, data (initial original record) based on this measurement verification data
As retention (to the demand of measurement verification result retrospect).
If underproof situation occurs in other checklist, initial original record is also that verification worker judges that checklist is unqualified
Reason, whether can adjusting and determine adjusting scheme important information source.For can adjusting checklist carry out adjusting after with
Next batch measurement verification task carries out the secondary measurement after adjusting together.For can not adjusting, remarks unqualified reasons, then
Into next round validation program.
Other vertification regulation JJG875-2005《Digital pressure gauge vertification regulation》Regulation, 0.05 grade of digital precision pressure meter
Calibrating point is no less than 10 (containing zero point), and calibrating cycle-index is twice；0.1 grade and once grade precision pressure gauge calibrating point
No less than 5 (containing zero point), calibrating cycle-index is once.
Correct data
In order to existing JJG875-2005《Digital pressure gauge vertification regulation》Vertification regulation matches, to measurement verification institute
Obtain initial original recorded data and carry out data processing.Initial original record is combined according to vertification regulation, by initial original record
The data of standard digital precision pressure gauge are corresponding to each corresponding calibrating point, the revision of the convention in checklist data corresponding to the calibrating point,
Tested meter reading carries out data processing according to minimum division value reading principle.The data for obtaining matching with vertification regulation are i.e. final
Original recorded data.For final original recorded data the revision of the convention (normal data is carried out according to the minimum division value data of checklist
The figure place showing of precision pressure gauge is typically more than checklist), the revision of the convention is carried out according to Figure correction principle, in maximum allowable mistake
The point tolerance revision of the convention of poor critical point, according to rounding up, principle is carried out, for the error more than the limits of error but by numeral
Revision of the convention principle not-carry, but not-carry, which is shown as qualified data, need to enter one, ensure that the result of this point is shown as not conforming to
Lattice, one need to be entered according to Figure correction principle for the error less than the limits of error, and enter one for it is overproof when not-carry,
Ensure that the result of this point is shown as qualified.
Data processing
Typing information of the data processing unit automatically to checklist calculates, calculate the checklist limits of error and
Maximum hysterisis error, analyzed by the calculating of the worst error of each calibrating point to checklist and hysterisis error, with maximum
Allowable error and maximum hysterisis error are compared the final calibrating conclusion for judging the checklist.Conclusion be divided into it is qualified with it is unqualified
Two kinds.
Qualified, result of determination clicks directly on for qualified checklist and completes key, the automatic signature of verification worker is completed, for this
The end-of-job of the verification worker of checklist.
Unqualified, result of determination is underproof checklist, it is necessary to examining and determine data, verification process and the situation of checklist
Carry out synthetic determination, determine unqualified reason, judge whether can with adjusting, can not adjusting, indicate unqualified reason, click on complete
Key, the automatic signature of verification worker is completed, the end-of-job of the calibrating for the checklist；If can adjusting, indicate adjusting before not
Qualified reason, into next round measurement verification program.
Draw calibrating conclusion
Veritify operator interfaces log in verifier's account, logged in by safety verification --- password password logs in, typing personnel with
Verification worker is identical, a password of people one.Original record to be veritified can line up to show (the original record as verification worker after logging in
Not in interface display of the same personnel as verifier), the point after veritifying original record and veritifying to belonging to veritification scope
Hit and complete key, original record verifier automatic signature completes whole original record contents, automatically generates certificate (copending), preserves
Under certificate file to be uploaded folder under the file of specified partition, it is original to print final version for printer while original record preserves
Record is a to carry out papery archive.
The system sets the form of three kinds of original records, and a kind of is the data record of most original, with the measurement side of this device
The initial original record carried out based on method；Another be by this record based on to the data of collection by minimum point of checklist
The angle value reading revision of the convention, is then converted, and changes into the final original record pattern to match with existing code.In order to it is existing
Vertification regulation matches, and finally a kind of data recording mode is the data pattern in final original record now.
In terms of the data record of system, the pattern of this software is retains, display, retains being advised with existing calibrating of finally determining
The data recording mode that journey matches, while the data record of most initial is subjected to electronic edition retention in the form of hiding document.
To ensure the demand of checklist retrospect.Initial original record and final original can be inquired about by inputting the typing information of checklist
Begin record, as shown in Figure 4.
Collection standard is gone when in the initially data inputting of original record of the invention mainly using checklist indicating value as calibrating point
The data of table (standard digital precision pressure gauge), the indicating value with the standard scale in existing digital precision pressure meter vertification regulation are
Point is examined and determine, the data for gathering checklist are different.
Standard in existing vertification regulation also includes piston gage, due to the functional characteristic of piston gage,
Reference pressure value corresponding with counterbalance mass can only be produced, if the calibration method in the selection present invention, piston gage are
Reading can not be carried out.
And this method using standard scale be standard digital precision pressure gauge as standard when, eliminate in reading process
The error that the human factor such as people's habituation reading, " looking for " introduces, higher ranked, the possible reading digit also one more of standard scale,
Especially when error is in critical point, reading checklist the method for standard scale more can accurately judge final verification result, this side
The advantage of method is more obvious, and this method can more be accurately obtained judgement information.
Claims (9)
- A kind of 1. digital precision pressure meter batch measurements verification system, it is characterised in that：It is pre- on pressure piping including being connected to Pressure device (1), media Containers (2), standard digital precision pressure gauge (3), precompressed hand pump (4), multiple stop valves (5), multiple quilts Examine meter connector (6) and multiple first single table fine setting hand pumps (8)；Also include control system (10) and collection key (9), be each detected the corresponding one group of stop valve (5) of meter connector (6), one first Single table fine setting hand pump (8) and a collection key (9)；The control system (10) includes control unit, Data Enter unit, data acquisition unit and data processing unit；Described control unit is connected with prepressing device, for controlling prepressing device regulating system pressure；Described information typing unit For typing checklist and standard digital precision pressure gauge information, and the calibrating of checklist is divided according to checklist information automatically Point；The data acquisition unit is connected by gathering key with standard digital precision pressure gauge, for gathering the accurate pressure of standard digital The real-time pressure data information of power table；The data processing unit is used to analyze and the data letter of processing data collecting unit collection Breath.
- A kind of 2. digital precision pressure meter batch measurements verification system according to claim 1, it is characterised in that：Also include Second single table fine setting hand pump (81) for adjusting tested meter pressure.
- A kind of 3. digital precision pressure meter batch measurements verification system according to claim 1, it is characterised in that：The pressure Also include decompression protection valve in solenoid road.
- A kind of 4. digital precision pressure meter batch measurements verification system according to claim 1 or 2, it is characterised in that：Institute It is vavuum pump or compression pump to state prepressing device.
- A kind of 5. numeral based on a kind of any described digital precision pressure meter batch measurements verification system of claim 1 value 3 Precision pressure gauge batch measurements calibration method, it is characterised in that：Comprise the following steps：1) by range classification checklist, precision pressure gauge batch is arranged on after the checklist of same range section is carried out into visual examination In verification system；2) the checklist information of Data Enter unit typing difference installation site；3) digital precision pressure meter in Data Enter unit automatic identification precision pressure gauge batch verification system, criterion number Whether word precision pressure gauge, the information of criterion digital precision pressure meter match with checklist, if the accurate pressure of standard digital Power table matches with checklist, then automatic input standard digital precision pressure gauge information；Otherwise, standard digital precision pressure is changed Table, repeat step 3)；4) the typing information of existing vertification regulation and checklist, the nothing of each checklist of Data Enter automatic cell generation are combined Data precision pressure gauge original record, and generate the calibrating point of checklist；For the checklist of non-standard range, divide manually defeated Enter to examine and determine a little；5) zero drift detect, standard digital precision pressure gauge and checklist are reset, respectively 0min, 15min, 30min, 45min, 60min time point, adjustment manual fine-tuning precompressed hand pump make current checklist indicating value be shown as zero, and data acquisition unit is adopted Collect standard digital precision pressure gauge data；Provide to determine whether checklist zero drift is qualified according to vertification regulation；6) pressure in digital precision pressure meter batch verification system pressure piping is adjusted near calibrating point by prepressing device； Precompressed hand pump is manually finely tuned again to be adjusted to pressure in system to examine and determine point, adjusts first and second single table fine setting hand again Pump, making each checklist, accurately calibrating point is arrived in instruction；Data acquisition unit gathers real time data of each checklist in the standard digital precision pressure gauge of each calibrating point, every time Each calibrating point data collection is once；7) after all calibrating points of checklist have been examined, all data in data acquisition unit are preserved, as initial original note Record；8) data processing unit carries out data processing to initial original record, and the revision of the convention is carried out according to data pattern as defined in code, The amendment data to match with vertification regulation are obtained, as final original recorded data；9) data processing unit is analyzed process, the backhaul data of the amendment data of each calibrating point of each checklist, Obtain the actual worst error and hysterisis error of each calibrating point of checklist, with reference to checklist original typing information in most Big allowable error and maximum allowable hysterisis error, are compared, judge verification result, if qualified, complete calibrating, generation is most Whole original record, wait to veritify；If it is unqualified and can not adjusting, indicate unqualified reason, then complete calibrating, generate final original note Record, waits to veritify；If it is unqualified but can adjusting, next group validation program is entered after adjusting；10) final original record information is veritified, completes to veritify, generate copending calibration certificate, it is most final original at last Record and copending calibration certificate carry out the preservation of electronics shelves and exported, and final original record is printed and carries out papery archive, is treated The metering management system that calibration certificate uploads metrological service is examined, work is completed.
- 6. digital precision pressure meter batch measurements calibration method according to claim 4, it is characterised in that：The step 7) Specially：Provide to combine initial original record according to vertification regulation, by initial original record Plays digital precision pressure meter Data are corresponding to each corresponding calibrating point, and the revision of the convention is detected meter reading according to minimum in the data of checklist corresponding to the calibrating point Scale division value reading principle carries out data processing, obtains the data to match with vertification regulation.
- 7. the digital precision pressure meter batch measurements calibration method according to claim 4 or 5, it is characterised in that：The quilt Examine table information include the calibrating date, temperature, humidity, censorship unit, tested table name, factory number, manufacturer, measurement range, Class of accuracy, scale division value, calibrating medium, visual examination；Standard digital precision pressure gauge information includes standard title, model, measurement range, manufacturer, class of accuracy, certificate Numbering, the term of validity.
- 8. digital precision pressure meter batch measurements calibration method according to claim 6, it is characterised in that：Step 2) typing During checklist information, the identical information with a batch of checklist carries out disposable unified typing.
- 9. digital precision pressure meter batch measurements calibration method according to claim 7, it is characterised in that：Step 2) is also wrapped Include judge checklist information whether the complete step of typing.
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| CN201710954338.4A CN107702852A (en) | 2017-10-13 | 2017-10-13 | Digital precision pressure meter batch measurements verification system and method |
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| CN201710954338.4A CN107702852A (en) | 2017-10-13 | 2017-10-13 | Digital precision pressure meter batch measurements verification system and method |
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