CN105509846A - Electronic gas meter calibration device and method - Google Patents

Electronic gas meter calibration device and method Download PDF

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Publication number
CN105509846A
CN105509846A CN201610106274.8A CN201610106274A CN105509846A CN 105509846 A CN105509846 A CN 105509846A CN 201610106274 A CN201610106274 A CN 201610106274A CN 105509846 A CN105509846 A CN 105509846A
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CN
China
Prior art keywords
gas meter
digital gas
host computer
monitor station
data
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610106274.8A
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Chinese (zh)
Inventor
刘勋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Qianjia Technology Co Ltd
Original Assignee
Chengdu Qianjia Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Qianjia Technology Co Ltd filed Critical Chengdu Qianjia Technology Co Ltd
Priority to CN201610106274.8A priority Critical patent/CN105509846A/en
Publication of CN105509846A publication Critical patent/CN105509846A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
    • G01F25/13Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using a reference counter

Abstract

The invention relates to the field of gas meter calibration, in particular to an electronic gas meter calibration device and method. The calibration device comprises an upper computer and a test bed; the test bed is used for measuring standard measurement data and transmitting the data to the upper computer; the upper computer is directly connected with both an electronic gas meter under test and the test bed and is used for controlling start and stop of the electronic gas meter and setting calibration parameters; the upper computer is also used for receiving the standard measurement data and actual measurement data and thereby calculate measurement errors according to the standard measurement data and actual measurement data; the upper computer is also used for correcting flow parameters of the electronic gas meter according to the measurement errors. The calibration device and method provided by the invention directly read measurement readings in the electronic gas meter, thus avoiding the problem that an existing calibration device requires manual reading of measurement data, reducing labor input and improving calibration efficiency.

Description

A kind of digital gas meter calibrating installation and calibration method
Technical field
The present invention relates to detecting gas meter field, particularly a kind of digital gas meter calibrating installation and calibration method.
Background technology
Electronic type (mems thermal mass gas meter, flow meter or ultrasonic wave gas meter) gas meter, flow meter belongs to measurement instrument, and according to the relevant regulations of country, each measurement instrument needs the calibrating carrying out measuring accuracy before putting on market; In gas meter, flow meter field, national regulation needs flow accuracy calibrating gas meter, flow meter being carried out to multiple flow point (different flow), only reaches corresponding accuracy class and requires that the gas meter, flow meter of (having 1.5 grades and 1.0 grades at present) just can dispatch from the factory.Because calibrating is basic demand to each gas meter, flow meter, and the annual product of some producers up to a million tables, therefore, the calibrating scheme of gas meter, flow meter must meet can procedure, the requirement such as convenient, fast, accurate and effective.
Existing monitor station (as sonic nozzle or bell-jar) is the calibrating installation for mechanical gas table mostly, in view of most mechanical gas table can not automatic reading (as character wheel display gas meter, flow meter just need artificial reading), the corresponding calibrating installation for them can not read the reading of gas meter, flow meter automatically, cause the automaticity of these calibrating installations not high, verification process needs a large amount of artificial participation, causes calibrating inefficiency.
Summary of the invention
The object of the invention is to overcome the reading that existing calibrating installation can not read gas meter, flow meter automatically, need a large amount of artificial problem participated in, provide one can be compatible with existing digital gas meter, and automatically can read the pick-up unit of gas meter, flow meter metering reading.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of digital gas meter calibrating installation, described calibrating installation comprises host computer and monitor station;
Described monitor station is used for measurement standard continuous data and these data is transferred to host computer;
Described host computer is directly connected with tested digital gas meter and monitor station simultaneously, for controlling beginning and the end of the metering of described digital gas meter, controls the setting of monitor station verification parameters; The standard metering data of described host computer also for receiving monitor station read the actual metered data of tested digital gas meter simultaneously automatically, and then calculate the error in dipping of described digital gas meter according to described standard metering data and actual metered data; Described host computer is also for correcting according to the coefficient of flow of error in dipping to described digital gas meter.
Further, described host computer is connected by RS232 mode with between tested digital gas meter and monitor station.
Further, described monitor station is sonic nozzle formula or bell-jar.
Further, described digital gas meter is ultrasonic wave gas meter.
The present invention provides one can reduce artificial participation simultaneously, and automatically can read the digital gas meter calibration method of digital gas meter metering reading, comprises following steps:
(1) tested digital gas meter is connected with such as the calibrating installation as described in claim; Wherein, the controller of described digital gas meter is directly connected with the host computer in described calibrating installation;
(2) carry out verification parameters setting by host computer to monitor station, described verification parameters setting comprises the setting chosen, measure total flow detecting flow point; Choose one detect flow point and enter step (3),
(3) by the metering of host computer simultaneously start detection platform and digital gas meter; Host computer directly reads the actual metered data of digital gas meter; Host computer is gone back self-inspection scaffold tower simultaneously and is received its standard metering data measured;
(4) when actual metered data or standard metering data reach default measurement total flow value, stop the metering of monitor station and digital gas meter simultaneously; Host computer calculates the error in dipping of digital gas meter according to the standard metering data received;
(5) as error is greater than predetermined threshold value, then, host computer corrects the coefficient of flow of digital gas meter at this detection flow point according to error in dipping, enters step (5) after correction; Otherwise, select the next flow point that detects to return step (2)
(6) the detection flow point as setting is not all examined and determine complete, then enter next detection flow point and return step (2), until all detection flow points all complete calibrating.
In some embodiment, return step (2) after the coefficient of flow of current detection flow point being corrected in step (5), again current detection flow point is examined and determine.
Further, described host computer is connected by RS232 mode with between tested digital gas meter and monitor station.
Further, described monitor station is sonic nozzle formula or bell-jar.
Further, described digital gas meter is ultrasonic wave gas meter.
compared with prior art, beneficial effect of the present invention: a kind of digital gas meter calibrating installation provided by the invention and calibration method, by carrying out the metering reading directly reading digital gas meter in the process of examining and determine, after calculating the error in dipping of tested digital gas meter in conjunction with the standard metering data of monitor station, digital gas meter is proofreaded, thus avoid calibrating installation in prior art to need artificial reading, input gas meter, flow meter reading, artificial reading error information, transfer to the problem that special host computer is proofreaded gas meter, flow meter again, significantly reduce the whole efficiency manually dropping into, improve calibrating.
Accompanying drawing illustrates:
Fig. 1 is the system chart of digital gas meter calibrating installation provided by the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
embodiment 1:as shown in Figure 1, the present embodiment provides a kind of digital gas meter calibrating installation, and described calibrating installation comprises host computer and monitor station;
Described monitor station is used for measurement standard continuous data and these data is transferred to host computer;
Described host computer is directly connected with tested digital gas meter and monitor station simultaneously, for controlling beginning and the end of the metering of described digital gas meter, controls the setting of monitor station verification parameters; The standard metering data of described host computer also for receiving monitor station read the actual metered data of tested digital gas meter simultaneously automatically, and then calculate the error in dipping of described digital gas meter according to described standard metering data and actual metered data; Described host computer is also for correcting according to the coefficient of flow of error in dipping to described digital gas meter.
During practical application, digital gas meter 2 to be detected is placed on monitor station 3, and it is connected complete with the snorkel on monitor station 3; Setting parameter is carried out to host computer 1, usually, setting parameter comprises the setting detecting flow point and (namely chooses 3 to 10 flow speed values, the measuring accuracy of gas meter, flow meter under different in flow rate value is examined and determine, as low speed, middling speed, at a high speed), measure the setting of total flow (namely for single measurement point, once measure in calibrating and stop to during how many liter), be that 70 elevate a turnable ladders are routine to choose 3 flow speed values (namely 3 detect flow points), to measure total flow set in the present embodiment; After setting parameter, control monitor station 3 and digital gas meter 2 by host computer 1 and start metering simultaneously; Measurement gas according to the flow velocity chosen by monitor station 3 and digital gas meter 2; Host computer 1 receive simultaneously monitor station 3 standard metering data (it is well known that, monitor station 3 itself can carry out the flow metering of standard, that is, the flow metering data that we it has been generally acknowledged that monitor station 3 itself are standard metering data) and the actual metered data of digital gas meter 2; When standard metering data or actual metered data reach default measurement total flow, host computer 1 controls monitor station 3 and digital gas meter 2 stops metering (can only choose a mode, namely host computer 1 otherwise standard metering data reach measure total flow time stop, stop when actual metered data reach and measure total flow, but during the mode stopped when adopting standard metering data to reach and measure total flow, need the requirement of real-time of the actual metered digital independent of host computer 1 pair of digital gas meter 2 higher).
In the present embodiment, the time interval that host computer 1 reads tested digital gas meter metering reading can be set, as, when adopting the mode of " stopping metering when standard metering data reach and measure total flow " to examine and determine, can set host computer 1 the calibrating of a certain flow detection point start and at the end of each metering reading (i.e. actual metered data) reading primary measured digital gas meter 2, also the metering reading (when tested digital gas meter can take the manner when metering reading resets when measuring beginning) only reading primary measured digital gas meter 2 at the end of the calibrating of this flow detection point can be set, also can adopt and such as read digital gas meter 2 reading once at interval of 0.1s-10s, in above-mentioned various situation, as standard metering data V markwhen reaching 70 liters, metering stops, then host computer 1 calculates error in dipping the E=((V of digital gas meter 2 mark-V real)/V mark) * 100%=((70-V real)/70) * 100%, subsequently, the value as error in dipping E is greater than predetermined threshold value, then host computer 1 corrects the stoichiometric coefficient of digital gas meter 2 at this detection flow point (flow speed value) according to this error in dipping, the mode corrected is by the stoichiometric coefficient K of gas meter, flow meter at this detection flow point formerbe corrected to K adjust, formula is K adjust=K former* (1-E), subsequently, again the next verification process detecting flow point is examined and determine or entered to this detection flow point, until all default detection flow points all complete calibrating,
And when adopting the mode of " stopping metering when actual metered data reach and measure total flow ", need the setting time interval of host computer 1 to the metering reading of tested digital gas meter 2 less, as every 0.1s-1s just reads tested digital gas meter 2 continuous data (i.e. actual metered data) once, when host computer 1 reads actual metered data V realwhen=70, metering stops, according to formula E=((V mark-V real)/V mark) * 100%=((V mark-70)/V mark) * 100% technology error in dipping.
Usually, between digital gas meter 2 and host computer 1, and monitor station 3 with between host computer for be connected by RS232 mode.Monitor station 3 can be sonic nozzle formula or bell-jar usually
embodiment 2:the present embodiment provides one can reduce artificial participation, and automatically can read digital gas meter 2 calibration method of digital gas meter 2 metering reading.Comprise following flow process:
(1) tested digital gas meter 2 is connected with calibrating installation as described in Example 1; Wherein, the controller of described digital gas meter 2 is directly connected with the host computer 1 in described calibrating installation;
(2) carry out verification parameters setting by host computer 1 pair of monitor station 3, described verification parameters setting comprises the setting chosen, measure total flow detecting flow point; Choose one detect flow point and enter step (3),
(3) by the metering of start detection platform 3 and digital gas meter 2 while of host computer 1; Host computer 1 directly reads the actual metered data of digital gas meter 2; Host computer 1 is gone back self-inspection scaffold tower 3 simultaneously and is received its standard metering data measured;
(4) when actual metered data or standard metering data reach default measurement total flow value, stop the metering of monitor station 3 and digital gas meter 2 simultaneously; Host computer 1 calculates the error in dipping of digital gas meter 2 according to the standard metering data received;
(5) as error is greater than predetermined threshold value, then, host computer 1 corrects the coefficient of flow of digital gas meter 2 at this detection flow point according to error in dipping, enters step (5) after correction; Otherwise, select the next flow point that detects to return step (2)
(6) the detection flow point as setting is not all examined and determine complete, then enter next detection flow point and return step (2), until all detection flow points all complete calibrating.
It should be noted, in the present embodiment, step (3) to step (5) is a complete flow process that is detected to flow point and examines and determine.
In the present embodiment, described host computer is connected by RS232 mode with between tested digital gas meter and monitor station.Described monitor station is sonic nozzle formula or bell-jar.Described digital gas meter be ultrasonic wave gas meter or other can be read by controller, the electronic gauge of metering gas data on flows (or qualitative data, energy datum).
embodiment 3:be with embodiment 2 difference, in the present embodiment, do not enter step (6) after the coefficient of flow of current detection flow point being corrected in step (5) but directly return step (3), again current detection flow point is examined and determine, just examine and determine, until all detection flow points are all examined and determine complete for next one detection flow point until the actual metered error of this detection flow point reaches after within predetermined threshold value.

Claims (9)

1. a digital gas meter calibrating installation, is characterized in that, described calibrating installation comprises host computer and monitor station;
Described monitor station is used for measurement standard continuous data and these data is transferred to host computer;
Described host computer is directly connected with tested digital gas meter and monitor station simultaneously, for controlling beginning and the end of the metering of described digital gas meter, controls the setting of monitor station verification parameters; The standard metering data of described host computer also for receiving monitor station read the actual metered data of tested digital gas meter simultaneously automatically, and then calculate the error in dipping of described digital gas meter according to described standard metering data and actual metered data; Described host computer is also for correcting according to the coefficient of flow of error in dipping to described digital gas meter.
2. digital gas meter calibrating installation as claimed in claim 1, it is characterized in that, described host computer is connected by RS232 mode with between tested digital gas meter and monitor station.
3. digital gas meter calibrating installation as claimed in claim 1, it is characterized in that, described monitor station is sonic nozzle formula or bell-jar.
4. digital gas meter calibrating installation as claimed in claim 1, it is characterized in that, described digital gas meter is ultrasonic wave gas meter.
5. a digital gas meter calibration method, is characterized in that, comprises following steps:
(1) tested digital gas meter is connected with calibrating installation as claimed in claim 1 or 2; Wherein, the controller of described digital gas meter is directly connected with the host computer in described calibrating installation;
(2) carry out verification parameters setting by host computer to monitor station, described verification parameters setting comprises the setting chosen, measure total flow detecting flow point; Choose one detect flow point and enter step (3),
(3) by the metering of host computer simultaneously start detection platform and digital gas meter; Host computer directly reads the actual metered data of digital gas meter; Host computer is gone back self-inspection scaffold tower simultaneously and is received its standard metering data measured;
(4) when actual metered data or standard metering data reach default measurement total flow value, stop the metering of monitor station and digital gas meter simultaneously; Host computer calculates the error in dipping of digital gas meter according to the standard metering data received;
(5) as error is greater than predetermined threshold value, then, host computer corrects the coefficient of flow of digital gas meter at this detection flow point according to error in dipping, enters step (5) after correction; Otherwise, select the next flow point that detects to return step (2)
(6) the detection flow point as setting is not all examined and determine complete, then enter next detection flow point and return step (2), until all detection flow points all complete calibrating.
6. digital gas meter calibration method as claimed in claim 5, is characterized in that, returns step (2), again examine and determine current detection flow point in step (5) to the coefficient of flow of current detection flow point after correcting.
7. digital gas meter calibration method as claimed in claim 5, it is characterized in that, described host computer is connected by RS232 mode with between tested digital gas meter and monitor station.
8. digital gas meter calibration method as claimed in claim 5, it is characterized in that, described monitor station is sonic nozzle formula or bell-jar.
9. digital gas meter calibration method as claimed in claim 5, it is characterized in that, described digital gas meter is ultrasonic wave gas meter.
CN201610106274.8A 2016-02-26 2016-02-26 Electronic gas meter calibration device and method Pending CN105509846A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827642A (en) * 2019-03-29 2019-05-31 宁夏隆基宁光仪表股份有限公司 A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication
CN111157081A (en) * 2019-12-26 2020-05-15 金卡智能集团股份有限公司 Calibration method of electronic gas meter
CN113884164A (en) * 2021-12-06 2022-01-04 成都千嘉科技有限公司 Self-adaptive calibration method of ultrasonic gas meter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460029A (en) * 1993-05-28 1995-10-24 Tuot; Neat Automatic tester and calibrator for instruments or fluid meters
CN202255571U (en) * 2011-10-24 2012-05-30 重庆市计量质量检测研究院 Venturi nozzle type high/low-temperature fuel gas representation value error detecting device with critical flow
CN103884405A (en) * 2014-04-15 2014-06-25 湖南威铭能源科技有限公司 Gas meter correction method based on liquid crystal screen display
CN205352516U (en) * 2016-02-26 2016-06-29 成都千嘉科技有限公司 Electron gas table calibrating installation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460029A (en) * 1993-05-28 1995-10-24 Tuot; Neat Automatic tester and calibrator for instruments or fluid meters
CN202255571U (en) * 2011-10-24 2012-05-30 重庆市计量质量检测研究院 Venturi nozzle type high/low-temperature fuel gas representation value error detecting device with critical flow
CN103884405A (en) * 2014-04-15 2014-06-25 湖南威铭能源科技有限公司 Gas meter correction method based on liquid crystal screen display
CN205352516U (en) * 2016-02-26 2016-06-29 成都千嘉科技有限公司 Electron gas table calibrating installation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827642A (en) * 2019-03-29 2019-05-31 宁夏隆基宁光仪表股份有限公司 A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication
CN111157081A (en) * 2019-12-26 2020-05-15 金卡智能集团股份有限公司 Calibration method of electronic gas meter
CN113884164A (en) * 2021-12-06 2022-01-04 成都千嘉科技有限公司 Self-adaptive calibration method of ultrasonic gas meter

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