CN109668683A - A method of it improving pressure transmitter and examines and determine accuracy - Google Patents
A method of it improving pressure transmitter and examines and determine accuracy Download PDFInfo
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- CN109668683A CN109668683A CN201910118486.1A CN201910118486A CN109668683A CN 109668683 A CN109668683 A CN 109668683A CN 201910118486 A CN201910118486 A CN 201910118486A CN 109668683 A CN109668683 A CN 109668683A
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- pressure transmitter
- pressure
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- calibrating
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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
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
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- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of methods of raising pressure transmitter calibrating accuracy, including following detecting step: (1) closing total shut-off valve；(2) pressure transmitter is classified by range；(3) pressure gauge is dismantled；(4) information of the tested pressure transmitter of data input unit typing difference installation site；(5) the no data original record of each tested pressure transmitter of data input automatic cell generation, and generate the calibrating point of tested pressure transmitter；For the tested pressure transmitter of non-standard range, input calibrating point is divided manually；(6) emptying shut-off valve is closed；(7) after pressure is stablized, the real time data and the real time data that exports through port number table corresponding channel of tested pressure transmitter of data acquisition unit acquisition digital precision pressure meter are utilized.Beneficial effects of the present invention: by multiple anti-leak detection and real-time data record, solve that traditional calibration method is more single, and the not high point of contact of calibration accuracy, easy to operate, precision is higher.
Description
Technical field
The invention belongs to pressure transmitter detection technique fields, are related to a kind of side of raising pressure transmitter calibrating accuracy
Method.
Background technique
Pressure transmitter (pressure transmitter) refers to export the pressure sensor for standard signal, is one
Kind receives the instrument that pressure variations are converted to standard output signals in proportion.The gas that it can experience load cell
The physical pressures parameter such as body, liquid is transformed into the electric signal (such as 4~20mADC) of standard, to supply indicator alarm, record
The secondary meters such as instrument, adjuster measure, indicate and procedure regulation.Pressure transmitter is the most commonly used one in industrial practice
Kind sensor is widely used in various industrial automatic control environment, is related to water conservancy and hydropower, railway traffic, intelligent building, production certainly
Numerous industries such as control, aerospace, military project, petrochemical industry, oil well, electric power, ship, lathe, pipeline.
Pressure signal is passed to electronic equipment by the main function of pressure transmitter, and then in its principle of Computer display pressure
It is substantially: and the mechanical signal of this pressure of hydraulic pressure is transformed into electronic signal pressure as electric current (4-20mA) and voltage or electricity
It is linear to flow size, usually proportional relation.So transmitter output voltage or electric current with pressure increase and increase by
This show that two kinds of pressure of the measured medium of the relational expression pressure transmitter of a pressure and voltage or electric current are passed through high and low two pressure
Power room, low pressure chamber pressure use atmospheric pressure or vacuum, act on the two sides isolation diaphragm of δ first (i.e. sensing element), by every
Measuring diaphragm two sides are transmitted to from the filling liquid in piece and element.
So to the calibrating of pressure transmitter with regard to particularly important, concerning safety problem, but calibrating side in the prior art
Method is more single, and calibration accuracy is not high.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of methods of raising pressure transmitter calibrating accuracy.
To achieve the goals above, the technical solution of the present invention is as follows:
A method of it improving pressure transmitter and examines and determine accuracy, including following detecting step:
(1) total shut-off valve is closed, so that pressure transmitter shut-off valve and stop valve for pressure gauge have been opened, guarantees emptying measurement
Gas in pipeline；
(2) by pressure transmitter by range classify, by the pressure transmitter of same range section carry out be sent into detection device into
Row is preliminary fixed；
(3) pressure gauge is dismantled, and in the position installation natural gas on-site pressure transmitter measurement and calibration dress of installation pressure gauge
Pressure, measuring unit are made in setting；
(4) information of the tested pressure transmitter of data input unit typing difference installation site；
(5) the no data original record of each tested pressure transmitter of data input automatic cell generation, and generate quilt
Examine the calibrating point of pressure transmitter；For the tested pressure transmitter of non-standard range, input calibrating point is divided manually；
(6) close emptying shut-off valve, by hose by natural gas on-site pressure transmitter measurement and calibration device make pressure,
Measuring unit is connect with media storage with prepressing units, carries out precompressed；
(7) until pressure stablize after, using data acquisition unit acquisition digital precision pressure meter real time data and by
The real time data that inspection pressure transmitter is exported through port number table corresponding channel.
To further description of the present invention, the gas in test tube road in the step (1) is carried out by gas pressure detector
Detection.
To further description of the present invention, the pressure transmitter in the step (2) is divided into capacitance pressure transmitter, expands
It is one such to dissipate Silicon pressure transmitter, ceramic pressure transmitter, strain-type pressure transmitter.
To further description of the present invention, emptying shut-off valve needs to carry out gas leakage test in the step (6).
To further description of the present invention, the real time data of the step (7) is retained, and facilitates next comparison.
Compared with prior art, it beneficial effects of the present invention: by multiple anti-leak detection and real-time data record, solves
Traditional calibration method is more single, and the not high point of contact of calibration accuracy, easy to operate, precision is higher.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1:
A method of it improving pressure transmitter and examines and determine accuracy, including following detecting step:
(1) total shut-off valve is closed, so that pressure transmitter shut-off valve and stop valve for pressure gauge have been opened, guarantees emptying measurement
Gas in pipeline；
(2) by pressure transmitter by range classify, by the pressure transmitter of same range section carry out be sent into detection device into
Row is preliminary fixed；
(3) pressure gauge is dismantled, and in the position installation natural gas on-site pressure transmitter measurement and calibration dress of installation pressure gauge
Pressure, measuring unit are made in setting；
(4) information of the tested pressure transmitter of data input unit typing difference installation site；
(5) the no data original record of each tested pressure transmitter of data input automatic cell generation, and generate quilt
Examine the calibrating point of pressure transmitter；For the tested pressure transmitter of non-standard range, input calibrating point is divided manually；
(6) close emptying shut-off valve, by hose by natural gas on-site pressure transmitter measurement and calibration device make pressure,
Measuring unit is connect with media storage with prepressing units, carries out precompressed；
(7) until pressure stablize after, using data acquisition unit acquisition digital precision pressure meter real time data and by
The real time data that inspection pressure transmitter is exported through port number table corresponding channel.
A kind of optimal technical scheme of the present embodiment, the gas in test tube road in the step (1) pass through air pressure and detect
Device is detected.
A kind of optimal technical scheme of the present embodiment, the pressure transmitter in the step (2) are divided into capacitive pressure change
Send device, diffused silicon pressure transmitter, ceramic pressure transmitter, strain-type pressure transmitter one such.
A kind of optimal technical scheme of the present embodiment, the middle emptying shut-off valve of the step (6) need to carry out gas leakage test.
The real time data of a kind of optimal technical scheme of the present embodiment, the step (7) is retained, and next time is facilitated
Comparison.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of method for improving pressure transmitter calibrating accuracy, which is characterized in that including following detecting step:
(1) total shut-off valve is closed, so that pressure transmitter shut-off valve and stop valve for pressure gauge have been opened, guarantees emptying measurement pipeline
In gas；
(2) pressure transmitter is classified by range, the pressure transmitter of same range section is carried out to be sent into detection device progress just
Step is fixed；
(3) pressure gauge is dismantled, and in the position installation natural gas on-site pressure transmitter measurement and calibration device of installation pressure gauge
Make pressure, measuring unit；
(4) information of the tested pressure transmitter of data input unit typing difference installation site；
(5) the no data original record of each tested pressure transmitter of data input automatic cell generation, and generate tested pressure
The calibrating point of power transmitter；For the tested pressure transmitter of non-standard range, input calibrating point is divided manually；
(6) emptying shut-off valve is closed, pressure, measurement will be made in natural gas on-site pressure transmitter measurement and calibration device by hose
Unit is connect with media storage with prepressing units, carries out precompressed；
(7) after pressure is stablized, the real time data and tested pressure of data acquisition unit acquisition digital precision pressure meter are utilized
The real time data that power transmitter is exported through port number table corresponding channel.
2. a kind of method for improving pressure transmitter calibrating accuracy according to claim 1, which is characterized in that the step
Suddenly the gas in the test tube road in (1) is detected by gas pressure detector.
3. a kind of method for improving pressure transmitter calibrating accuracy according to claim 1, which is characterized in that the step
Suddenly the pressure transmitter in (2) is divided into capacitance pressure transmitter, diffused silicon pressure transmitter, ceramic pressure transmitter, strain
Formula pressure transmitter is one such.
4. a kind of method for improving pressure transmitter calibrating accuracy according to claim 1, which is characterized in that the step
Suddenly emptying shut-off valve needs to carry out gas leakage test in (6).
5. a kind of method for improving pressure transmitter calibrating accuracy according to claim 1, which is characterized in that the step
Suddenly the real time data of (7) is retained, and facilitates next comparison.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118486.1A CN109668683A (en) | 2019-02-16 | 2019-02-16 | A method of it improving pressure transmitter and examines and determine accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118486.1A CN109668683A (en) | 2019-02-16 | 2019-02-16 | A method of it improving pressure transmitter and examines and determine accuracy |
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| Publication Number | Publication Date |
|---|---|
| CN109668683A true CN109668683A (en) | 2019-04-23 |
Family
ID=66151999
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910118486.1A Pending CN109668683A (en) | 2019-02-16 | 2019-02-16 | A method of it improving pressure transmitter and examines and determine accuracy |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019717A (en) * | 1996-07-03 | 1998-01-23 | Tokiko Maintenance Kk | Apparatus and method for inspecting pressure of tank |
| CN205719446U (en) * | 2016-05-30 | 2016-11-23 | 济南三宇仪表设备有限公司 | A kind of gas meter, flow meter seals assay device |
| CN205843902U (en) * | 2016-05-31 | 2016-12-28 | 义乌市金宇机械厂 | A kind of inhalator jar leak detecting device |
| CN107631836A (en) * | 2017-10-13 | 2018-01-26 | 郑显锋 | Natural gas on-site pressure transmitter measurement and calibration device and method |
| CN107727313A (en) * | 2017-10-13 | 2018-02-23 | 郑显锋 | Automate pressure transmitter batch measurements verification system and method |
| CN107796561A (en) * | 2017-10-13 | 2018-03-13 | 郑显锋 | Pressure gauge batch measurements verification system and method |
-
2019
- 2019-02-16 CN CN201910118486.1A patent/CN109668683A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019717A (en) * | 1996-07-03 | 1998-01-23 | Tokiko Maintenance Kk | Apparatus and method for inspecting pressure of tank |
| CN205719446U (en) * | 2016-05-30 | 2016-11-23 | 济南三宇仪表设备有限公司 | A kind of gas meter, flow meter seals assay device |
| CN205843902U (en) * | 2016-05-31 | 2016-12-28 | 义乌市金宇机械厂 | A kind of inhalator jar leak detecting device |
| CN107631836A (en) * | 2017-10-13 | 2018-01-26 | 郑显锋 | Natural gas on-site pressure transmitter measurement and calibration device and method |
| CN107727313A (en) * | 2017-10-13 | 2018-02-23 | 郑显锋 | Automate pressure transmitter batch measurements verification system and method |
| CN107796561A (en) * | 2017-10-13 | 2018-03-13 | 郑显锋 | Pressure gauge batch measurements verification system and method |
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Application publication date: 20190423 |
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| RJ01 | Rejection of invention patent application after publication |