CN111473913A - Automatic calibrator for pressure instrument - Google Patents
Automatic calibrator for pressure instrument Download PDFInfo
- Publication number
- CN111473913A CN111473913A CN202010506963.4A CN202010506963A CN111473913A CN 111473913 A CN111473913 A CN 111473913A CN 202010506963 A CN202010506963 A CN 202010506963A CN 111473913 A CN111473913 A CN 111473913A
- Authority
- CN
- China
- Prior art keywords
- pressure
- chip microcomputer
- single chip
- control motor
- fine adjustment
- Prior art date
- 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.)
- Withdrawn
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Classifications
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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 an automatic calibrator for pressure instruments, which belongs to the field of instruments and is characterized by comprising a singlechip unit, a pressure generating unit and a measuring unit, the single chip microcomputer unit comprises a single chip microcomputer, a digital display and an operation keyboard, the single chip microcomputer is respectively and electrically connected with the digital display and the operation keyboard, the pressure generating unit comprises a control motor and a pneumatic piston, the control motor is electrically connected with the singlechip, the control motor is mechanically connected with the pneumatic piston, the measuring unit comprises a fine adjustment valve, a detected pressure instrument interface, a stop valve and a pressure sensor, the fine adjustment valve, the stop valve and the pressure sensor are connected with each other through pipelines, the stop valve is connected with a pressure gauge interface pipeline, the fine adjustment valve is connected with the pneumatic piston pipeline, and the pressure sensor is electrically connected with the single chip microcomputer. The invention has the characteristics of manual and automatic verification, automatic positioning of verification points and quick and accurate verification.
Description
Technical Field
The invention relates to an automatic calibrator for a pressure instrument, and belongs to the field of instruments and meters.
Background
The pressure measuring instrument is the most numerous instrument in the process detecting instrument, and the measuring accuracy of the pressure measuring instrument is related to the quality of safety production and products, so that the national quality supervision bureau has forced annual inspection on the pressure measuring instrument, the annual inspection period is 6 months and 2 years, so that the checking quantity of the pressure measuring instrument is very large, the existing pressure measuring instrument is mainly checked by manual operation, the workload is large, the operation and the positioning are difficult, and the artificial reading error is easy to generate.
Disclosure of Invention
The invention aims to provide an automatic calibrator for pressure instruments, which has the advantages of manual and automatic calibration, automatic positioning of calibration points, and quick and accurate calibration.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention discloses an automatic calibrator for a pressure instrument, which comprises a single chip microcomputer unit, a pressure generating unit and a measuring unit, wherein the single chip microcomputer unit comprises a single chip microcomputer, a digital display and an operation keyboard, the single chip microcomputer is respectively and electrically connected with the digital display and the operation keyboard, the pressure generating unit comprises a control motor and a pneumatic piston, the control motor is electrically connected with the single chip microcomputer, the control motor is mechanically connected with the pneumatic piston, the measuring unit comprises a fine adjustment valve, a pressure instrument interface to be tested, a stop valve and a pressure sensor, the fine adjustment valve, the stop valve and the pressure sensor are mutually connected through pipelines, the stop valve is connected with a pressure gauge interface through a pipeline, the fine adjustment valve is connected with the pneumatic piston through a pipeline, and the pressure sensor is electrically connected with the single chip microcomputer.
The invention has the advantages that the air is used as a pressure medium, the invention is environment-friendly and sanitary, can be manually operated or automatically operated, can manually or automatically set a plurality of check points, can automatically check the positive and negative strokes, is quicker and more accurate in check, and sets and stores the parameters in the check process in the singlechip.
Drawings
Fig. 1 is a block diagram of the structure of the present invention.
The designations in the drawings have the following meanings:
1. the pressure measuring device comprises a singlechip microcomputer unit 2, a pressure generating unit 3, a measuring unit 11, a singlechip microcomputer 12, a digital display 13, an operation keyboard 21, a control motor 22, a pneumatic piston 31, a fine adjustment valve 32, a detected pressure instrument interface 33, a stop valve 34 and a pressure sensor.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Referring to fig. 1, the automatic pressure gauge calibrator of the present invention comprises a single chip microcomputer unit 1, a pressure generating unit 2 and a measuring unit 3, wherein the single chip microcomputer unit 1 comprises a single chip microcomputer 11, a digital display 12 and an operation keyboard 13, the single chip microcomputer 11 is respectively electrically connected with the digital display 12 and the operation keyboard 13, the pressure generating unit 2 comprises a control motor 21 and a pneumatic piston 22, the control motor 21 is electrically connected with the single chip microcomputer 11, the control motor 21 is mechanically connected with the pneumatic piston 22, the measuring unit 3 comprises a fine adjustment valve 31, a pressure gauge interface 32 to be tested, a stop valve 33 and a pressure sensor 34, the fine adjustment valve 31, the stop valve 33 and the pressure sensor 34 are mutually connected through a pipeline, the stop valve 33 is connected with the pressure gauge interface 32 through a pipeline, and the fine adjustment valve 31 is connected with the pneumatic piston 22 through a pipeline, the pressure sensor 34 is electrically connected with the singlechip 11.
The working process of the invention is as follows:
before working, firstly fixing the pressure instrument to be detected on a pressure instrument interface 32, opening a stop valve 33, then setting a given pressure value through the operation keyboard 13, wherein the set numerical value is displayed by a lower screen of the digital display 12, and the digital display 12 is double-screen display;
when the pressure is boosted in the positive stroke, if automatic is selected, the invention starts, the control motor 21 automatically starts positive rotation to start boosting, the boosting speed is automatically adjusted, the lower the boosting speed is, the pressure in the pipe is measured and converted into an electric signal by the pressure sensor 34 and is sent to the singlechip 11, and the electric signal is compared with the given pressure, meanwhile, the electric signal output by the detected pressure instrument is also sent to the singlechip 11, when the pressure in the pipe is equal to the given pressure, the control motor 21 automatically stops rotating, and the error of the detected pressure instrument is displayed on the digital display 12.
If manual operation is selected, the control motor 21 is started by manual operation to quickly increase the pressure, coarse adjustment of the pressure is carried out, when the pressure approaches a set pressure value, the control motor 21 is stopped, and then the fine adjustment valve 31 is manually operated to finely adjust the pressure in the pipe to the set pressure value.
When the reverse stroke is used for reducing the pressure, if automatic operation is selected, the control motor 21 is started to rotate reversely and automatically start to reduce the pressure, the pressure reducing speed is automatically adjusted, the pressure reducing speed is slower when the pressure reducing speed is closer to the given pressure, the pressure in the pipeline is measured and converted into an electric signal through the pressure sensor 34 and is sent to the single chip microcomputer 11, the electric signal is compared with the given pressure, when the pressure in the pipeline is equal to the given pressure, the control motor 21 automatically stops rotating, and the error of the detected pressure instrument is displayed on the digital display 12.
When the pressure tester is used for setting a given pressure, a plurality of check points can be manually set at one time, when the pressure tester works, the pressure tester sequentially checks the pressure meters to be tested according to the set check points, can automatically check the positive and negative strokes, can also check a plurality of pressure meters, and automatically stores check data in the singlechip 11.
Claims (1)
1. The utility model provides a pressure instrument automatic check gauge which characterized in that: the pressure measuring device comprises a single chip microcomputer unit (1), a pressure making unit (2) and a measuring unit (3), wherein the single chip microcomputer unit (1) comprises a single chip microcomputer (11), a digital display (12) and an operation keyboard (13), the single chip microcomputer (11) is respectively electrically connected with the digital display (12) and the operation keyboard (13), the pressure making unit (2) comprises a control motor (21) and a pneumatic piston (22), the control motor (21) is electrically connected with the single chip microcomputer (11), the control motor (21) is mechanically connected with the pneumatic piston (22), the measuring unit (3) comprises a fine adjustment valve (31), a detected pressure instrument interface (32), a stop valve (33) and a pressure sensor (34), the fine adjustment valve (31), the stop valve (33) and the pressure sensor (34) are mutually connected through pipelines, the stop valve (33) is connected with a pressure meter interface (32) through a pipeline, the fine adjustment valve (31) is connected with the pneumatic piston (22) through a pipeline, and the pressure sensor (34) is electrically connected with the single chip microcomputer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506963.4A CN111473913A (en) | 2020-06-05 | 2020-06-05 | Automatic calibrator for pressure instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506963.4A CN111473913A (en) | 2020-06-05 | 2020-06-05 | Automatic calibrator for pressure instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111473913A true CN111473913A (en) | 2020-07-31 |
Family
ID=71763931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010506963.4A Withdrawn CN111473913A (en) | 2020-06-05 | 2020-06-05 | Automatic calibrator for pressure instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111473913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838867A (en) * | 2022-04-15 | 2022-08-02 | 中国核动力研究设计院 | Online calibration device for nuclear-grade equipment pressure instrument and calibration, correction and monitoring methods |
-
2020
- 2020-06-05 CN CN202010506963.4A patent/CN111473913A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838867A (en) * | 2022-04-15 | 2022-08-02 | 中国核动力研究设计院 | Online calibration device for nuclear-grade equipment pressure instrument and calibration, correction and monitoring methods |
| CN114838867B (en) * | 2022-04-15 | 2024-02-27 | 中国核动力研究设计院 | Nuclear grade equipment pressure instrument online checking device and checking, correcting and monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200731 |