CN106153251B - A kind of digital pressure gauge calibration verification technical method - Google Patents
A kind of digital pressure gauge calibration verification technical method Download PDFInfo
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- CN106153251B CN106153251B CN201610798519.8A CN201610798519A CN106153251B CN 106153251 B CN106153251 B CN 106153251B CN 201610798519 A CN201610798519 A CN 201610798519A CN 106153251 B CN106153251 B CN 106153251B
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- pressure gauge
- digital pressure
- calibration
- digital
- standard deviation
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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
Abstract
The invention discloses a kind of digital pressure gauge calibration verification technical methods.2h-5h is placed under the conditions of calibration environment including digital pressure gauge；Horizontal to the verticality of piston axis with formula level meter adjustment piston gage load-bearing plate plane, the working media of pressure gauge is transformer oil；Digital pressure gauge, which is powered, preheats 10min-30min；X1MPa, X2MPa, X3MPa, X4MPa pressure spot are chosen in the measurement range of digital pressure gauge as calibration point, boosting, decompression calibration loop number are 2-10 times；It obtains, single standard deviation and secondary standard are poor.The present invention be measured the check results of digital pressure gauge by piston gage, by carrying out the multiple pressure test in 0.1~6MPa, the mean value of single standard deviation and secondary standard difference obtained is compared with the E value of the digital pressure gauge in normal precision, it is convenient with examining, improve the precision of digital pressure gauge verification.
Description
Technical field
The invention belongs to digital pressure gauge technical fields, more particularly to a kind of digital pressure gauge calibration verification technical side
Method.
Background technique
Digital pressure recorder is due to the advantages that its is simple and easy to operate, performance is stable, reading is intuitive, by vast gage work
Person receives and approves.
Digital pressure gauge as pressure measurement utensil, plumbing, electric power, petrochemical industry, food hygiene, aerospace and
The fields such as defence and military have a wide range of applications.The calibration of digital pressure gauge is a relative complex process, and influence most terminates
There are many factor of fruit, need to consider standard and corollary equipment, the testing person and environmental condition in laboratory etc..Handling capacity is tested
Card, laboratory standard device, calibrated horizontal can be compared with other technologies mechanism, convenient for find itself there are the problem of simultaneously
It is corrected in time, to improve the calibrated horizontal in itself laboratory, it is ensured that the accuracy of calibration result.
Summary of the invention
The purpose of the present invention is to provide a kind of digital pressure gauge calibration verification technical method, by piston gage into
Row is measured the check results of digital pressure gauge, by carrying out the multiple pressure test in 0.1~6MPa, the single obtained
The mean value of standard deviation and secondary standard difference is compared with the E value of the digital pressure gauge in normal precision, improves digital pressure gauge
The precision of verification.
The present invention is achieved by the following technical solutions:
The present invention is a kind of digital pressure gauge calibration verification technical method, is included the following steps:
Step 1, digital pressure gauge place 2h-5h under the conditions of calibration environment, keep the electricity of battery, stablize battery electricity
Pressure；Reduce to digital pressure gauge bring extra error.
Step 2, it is horizontal to the verticality of piston axis with formula level meter adjustment piston gage load-bearing plate plane,
The working media of pressure gauge is transformer oil；Digital pressure gauge, which is powered, preheats 10min-30min, and 1-2 boosting examination is done before calibration
It tests, smoothly boosts and be depressured in calibration；
Step 3 chooses the conduct of X1MPa, X2MPa, X3MPa, X4MPa pressure spot in the measurement range of digital pressure gauge
Calibration point, boosting, decompression calibration loop number are 2-10 times；It obtains, single standard deviation S1, S2, S3 and S4；Secondary standard is poor
S1 ', S2 ', S3 ' and S4 '；
Step 4, by the average value x of single standard deviation difference corresponding with secondary standard difference；The digital pressure gauge is existed
The average value X of the single standard deviation that laboratory obtains difference corresponding with secondary standard difference；Obtain E=x-X.
Further, the measurement range in digital pressure gauge of the step 3 is 0.1~6MPa, so that X1MPa,
The pressure value of X2MPa, X3MPa, X4MPa are incremented by successively, are 2MPa, 3MPa, 4MPa, 5MPa.
Further, the range of the E of the step 4: 0≤E≤1, when the E value of calculating is in the range, i.e. the number
Word gauge calibration structure is qualified, is intended to more than the range unqualified.
The invention has the following advantages:
The present invention be measured the check results of digital pressure gauge by piston gage, by carrying out 0.1
Multiple pressure test in~6MPa, the number pressure in the mean value and normal precision of single standard deviation and the secondary standard difference obtained
The E value of power meter is compared, and is had and is examined convenient, the precision of raising digital pressure gauge verification.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Specific embodiment
Below in conjunction in the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
The present invention is a kind of digital pressure gauge calibration verification technical method, is included the following steps:
Step 1, digital pressure gauge place 2h-5h under the conditions of calibration environment, keep the electricity of battery, stablize battery electricity
Pressure；
Step 2, it is horizontal to the verticality of piston axis with formula level meter adjustment piston gage load-bearing plate plane,
The working media of pressure gauge is transformer oil；Digital pressure gauge, which is powered, preheats 10min-30min, and 1-2 boosting examination is done before calibration
It tests, smoothly boosts and be depressured in calibration；
Step 3 chooses the conduct of X1MPa, X2MPa, X3MPa, X4MPa pressure spot in the measurement range of digital pressure gauge
Calibration point, boosting, decompression calibration loop number are 2-10 times；It obtains, single standard deviation S1, S2, S3 and S4；Secondary standard is poor
S1 ', S2 ', S3 ' and S4 '；
Step 4, by the average value x of single standard deviation difference corresponding with secondary standard difference；The digital pressure gauge is existed
The average value X of the single standard deviation that laboratory obtains difference corresponding with secondary standard difference；Obtain E=x-X.
Wherein, the measurement range in digital pressure gauge of step 3 be 0.1~6MPa so that X1MPa, X2MPa, X3MPa,
The pressure value of X4MPa is incremented by successively, is 2MPa, 3MPa, 4MPa, 5MPa.
Wherein, the range of the E of step 4: 0≤E≤1, when the E value of calculating is in the range, i.e. the digital pressure gauge
Calibration structure is qualified, is intended to more than the range unqualified.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (1)
1. a kind of digital pressure gauge calibration verification technical method, which comprises the steps of:
Step 1, digital pressure gauge place 2h-5h under the conditions of calibration environment, keep the electricity of battery, stablize cell voltage；
Step 2, pressure horizontal to the verticality of piston axis with formula level meter adjustment piston gage load-bearing plate plane
The working media of meter is transformer oil；Digital pressure gauge, which is powered, preheats 10min-30min, and 1-2 pressure build-up test, school are done before calibration
It smoothly boosts and is depressured in standard；
Step 3 chooses X1MPa, X2MPa, X3MPa, X4MPa pressure spot as calibration in the measurement range of digital pressure gauge
Point, boosting, decompression calibration loop number are 2-10 times；It obtains, single standard deviation S1, S2, S3 and S4；Secondary standard difference S1 ',
S2 ', S3 ' and S4 '；
Step 4, by the average value x of single standard deviation difference corresponding with secondary standard difference；The digital pressure gauge is being tested
The average value X of the single standard deviation that room obtains difference corresponding with secondary standard difference；Obtain E=x-X；
The measurement range in digital pressure gauge of the step 3 is 0.1~6Mpa；
The range of the E of the step 4: 0≤E≤1.
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| CN201610798519.8A CN106153251B (en) | 2016-08-31 | 2016-08-31 | A kind of digital pressure gauge calibration verification technical method |
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| CN201610798519.8A CN106153251B (en) | 2016-08-31 | 2016-08-31 | A kind of digital pressure gauge calibration verification technical method |
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| CN106153251A CN106153251A (en) | 2016-11-23 |
| CN106153251B true CN106153251B (en) | 2019-07-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335755Y (en) * | 2009-01-20 | 2009-10-28 | 山东省计量科学研究院 | Automatic measured data collecting device for manometer piston active areas |
| CN101846572A (en) * | 2010-05-13 | 2010-09-29 | 西北工业大学 | Method for decreasing basic error of pressure sensor |
| JP2014106097A (en) * | 2012-11-27 | 2014-06-09 | Jfe Steel Corp | Device and method for detecting impulse line blockage |
| CN104792458A (en) * | 2015-04-22 | 2015-07-22 | 湖南省计量检测研究院 | Wireless pressure data acquiring instrument calibrating device and method thereof |
-
2016
- 2016-08-31 CN CN201610798519.8A patent/CN106153251B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335755Y (en) * | 2009-01-20 | 2009-10-28 | 山东省计量科学研究院 | Automatic measured data collecting device for manometer piston active areas |
| CN101846572A (en) * | 2010-05-13 | 2010-09-29 | 西北工业大学 | Method for decreasing basic error of pressure sensor |
| JP2014106097A (en) * | 2012-11-27 | 2014-06-09 | Jfe Steel Corp | Device and method for detecting impulse line blockage |
| CN104792458A (en) * | 2015-04-22 | 2015-07-22 | 湖南省计量检测研究院 | Wireless pressure data acquiring instrument calibrating device and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 活塞式压力计校准数字压力计的不确定度分析;陈睿等;《计量与测试技术》;20131231;第40卷(第5期);第51-52页 |
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| CN106153251A (en) | 2016-11-23 |
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Effective date of registration: 20190621 Address after: 266000 Honglanxi Village 562, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant after: Qingdao Jinyuan Welding and Cutting Equipment Co., Ltd. Address before: 230000 Room 411/413, Building 7, High-tech Entrepreneurship Service Center, 102 Science Avenue, Hefei High-tech Zone, Anhui Province Applicant before: Hefei Mai Sirui instrument and meter Co., Ltd |
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