CN203191153U - Differential pressure transmitter calibrator - Google Patents
Differential pressure transmitter calibrator Download PDFInfo
- Publication number
- CN203191153U CN203191153U CN 201320217926 CN201320217926U CN203191153U CN 203191153 U CN203191153 U CN 203191153U CN 201320217926 CN201320217926 CN 201320217926 CN 201320217926 U CN201320217926 U CN 201320217926U CN 203191153 U CN203191153 U CN 203191153U
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- CN
- China
- Prior art keywords
- pressure transmitter
- differential pressure
- solenoid valve
- electromagnetism
- hydraulic pump
- 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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a differential pressure transmitter calibrator belonging to the field of automatic instrument calibration devices. The calibrator is characterized in comprising a box body. A standard differential pressure transmitter connector and a connector of a differential pressure transmitter to be calibrated are arranged on the box body. An air compressor, a pneumatic hydraulic pump, a check valve, a solenoid three-valve set, a solenoid valve D, an oil tank, a standard pressure transmitter, and an intelligent controller are arranged in the box body. According to the utility model, pneumatic hydraulic pump pressurizing and pulse pressure releasing methods are adopted, such that pressurizing and pressure releasing are smoother and more accurate. The calibrator can fully automatically calibrate the differential pressure transmitter, and has the characteristics of fast and stable pressure control and accurate pressurizing.
Description
Technical field
The utility model relates to a kind of differential pressure transmitter tester, belongs to instrument and meter for automation tester field.
Background technology
Differential pressure transmitter is widely used in the measurement of flow and liquid level, now manual adjustments static pressure and differential pressure signal is mostly used in the differential pressure transmitter verification, troublesome poeration not only, and location difficulty also easily produces artificial reading error.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of differential pressure transmitter tester that can automatically accurately locate static pressure and differential pressure checkpoint.
For achieving the above object, the utility model is realized by following technical scheme: the differential pressure transmitter tester, it is characterized in that, comprise casing, the standard deviation pressure transmitter is installed on described casing and by school differential pressure transmitter joint, at described box house air compressor machine, pneumatically powered hydraulic pump, reverse checkvalve, electromagnetism three valve groups, solenoid valve D, fuel tank, normal pressure transmitter, intelligent controller is installed.
Further, described electromagnetism three valve groups comprise solenoid valve A, solenoid valve B, solenoid valve C.
Further, described air compressor machine is connected with pneumatically powered hydraulic pump, pneumatically powered hydraulic pump is connected with fuel tank, pneumatically powered hydraulic pump also is connected with reverse checkvalve one end, the reverse checkvalve other end divides two-way to be connected with electromagnetism three valve groups, be connected to the normal pressure transmitter between reverse checkvalve and the electromagnetism three valve groups, electromagnetism three valve groups and standard deviation pressure transmitter be connected by school differential pressure transmitter joint, be connected to solenoid valve D between electromagnetism three valve groups and the standard deviation pressure transmitter.Intelligent controller control solenoid valve A, solenoid valve B, solenoid valve C opened when verification began, start air compressor machine and drive the pneumatically powered hydraulic pump pressurization, measure static pressure by the normal pressure transmitter, intelligent controller control solenoid valve A, solenoid valve B, solenoid valve C close when arriving the static pressure checkpoint, carry out the static pressure verification this moment, then, adopt intelligent controller control solenoid valve D pulse fine setting pressure release to obtain differential pressure value, carry out the differential pressure verification.
The beneficial effects of the utility model are, can automatically carry out verification to differential pressure transmitter, can automatically accurately locate static pressure and differential pressure checkpoint, can carry out positive revesal verification by a plurality of checkpoints of automatic setting, be limited to 4MPa on the static pressure pressure checking, because the method for the pressurization of employing pneumatically powered hydraulic pump and pulse pressure release makes pressurization and pressure release steady more and accurate.
Description of drawings
Fig. 1 is the system diagram of the utility model differential pressure transmitter tester;
Fig. 2 is the electromagnetism three valve group synoptic diagram of the utility model differential pressure transmitter tester.
The mark implication is as follows in the accompanying drawing:
1, air compressor machine 2, pneumatically powered hydraulic pump 3, reverse checkvalve 4, electromagnetism three valve groups
5, standard deviation pressure transmitter 6, by school differential pressure transmitter joint 7, solenoid valve D 8, fuel tank
9, normal pressure transmitter 10, intelligent controller 11, casing 12, solenoid valve A
13, solenoid valve B 14, solenoid valve C.
Embodiment
The utility model is described in further detail below in conjunction with diagram and specific embodiment.
With reference to Fig. 1, Fig. 2, the utility model differential pressure transmitter tester, comprise casing 11, standard deviation pressure transmitter 5 is installed on casing 11 and by school differential pressure transmitter joint 6, air compressor machine 1, pneumatically powered hydraulic pump 2, reverse checkvalve 3, electromagnetism three valve groups 4, solenoid valve D7, fuel tank 8, normal pressure transmitter 9, intelligent controller 10 is installed in casing inside.
Further, described electromagnetism three valve groups 4 comprise solenoid valve A12, solenoid valve B13, solenoid valve C14.
Further, described air compressor machine 1 is connected with pneumatically powered hydraulic pump 2, pneumatically powered hydraulic pump 2 is connected with fuel tank 8, pneumatically powered hydraulic pump 2 also is connected with reverse checkvalve 3 one ends, reverse checkvalve 3 other ends divide two-way to be connected with electromagnetism three valve groups 4, be connected to normal pressure transmitter 9 between reverse checkvalve 3 and the electromagnetism three valve groups 4, electromagnetism three valve groups 4 and standard deviation pressure transmitter 5 be connected by school differential pressure transmitter joint 6, be connected to solenoid valve D7 between electromagnetism three valve groups 4 and the standard deviation pressure transmitter 5.Intelligent controller 10 control solenoid valve A12, solenoid valve B13, solenoid valve C14 opened when verification began, start air compressor machine 1 and drive pneumatically powered hydraulic pump 2 pressurizations, measure static pressure by normal pressure transmitter 9, intelligent controller 10 control solenoid valve A12, solenoid valve B13, solenoid valve C14 close when arriving the static pressure checkpoint, carry out the static pressure verification this moment, then, adopt intelligent controller 10 control solenoid valve D7 pulse fine setting pressure releases to obtain differential pressure value, carry out the differential pressure verification.
By reference to the accompanying drawings utility model is carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the non-substantial improvement of having adopted method design of the present utility model and technical scheme to carry out; perhaps without improving method design of the present utility model and technical scheme are applied directly to other occasions, all within protection domain of the present utility model.
Claims (1)
1. differential pressure transmitter tester, it is characterized in that, comprise casing (11), standard deviation pressure transmitter (5) is installed and by school differential pressure transmitter joint (6) on described casing (11), air compressor machine (1), pneumatically powered hydraulic pump (2), reverse checkvalve (3), electromagnetism three valve groups (4), solenoid valve D (7), fuel tank (8), normal pressure transmitter (9), intelligent controller (10) are installed in described casing (11) inside, and described electromagnetism three valve groups (4) comprise solenoid valve A (12), solenoid valve B (13), solenoid valve C (14);
Comprise above-mentioned parts, described air compressor machine (1) is connected with pneumatically powered hydraulic pump (2), pneumatically powered hydraulic pump (2) is connected with fuel tank (8), pneumatically powered hydraulic pump (2) also is connected with reverse checkvalve (3) one ends, reverse checkvalve (3) other end divides two-way to be connected with electromagnetism three valve groups (4), be connected to normal pressure transmitter (9) between reverse checkvalve (3) and the electromagnetism three valve groups (4), electromagnetism three valve groups (4) and standard deviation pressure transmitter (5) be connected by school differential pressure transmitter joint (6), be connected to solenoid valve D (7) between electromagnetism three valve groups (4) and the standard deviation pressure transmitter (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201320217926 CN203191153U (en) | 2013-04-26 | 2013-04-26 | Differential pressure transmitter calibrator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201320217926 CN203191153U (en) | 2013-04-26 | 2013-04-26 | Differential pressure transmitter calibrator |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203191153U true CN203191153U (en) | 2013-09-11 |
Family
ID=49108006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201320217926 Expired - Fee Related CN203191153U (en) | 2013-04-26 | 2013-04-26 | Differential pressure transmitter calibrator |
Country Status (1)
Country | Link |
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CN (1) | CN203191153U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103234696A (en) * | 2013-04-26 | 2013-08-07 | 南京化工职业技术学院 | Differential pressure transmitter checking instrument |
CN107741297A (en) * | 2017-11-21 | 2018-02-27 | 王强 | Differential pressure transmitter verifies detecting system |
-
2013
- 2013-04-26 CN CN 201320217926 patent/CN203191153U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103234696A (en) * | 2013-04-26 | 2013-08-07 | 南京化工职业技术学院 | Differential pressure transmitter checking instrument |
CN107741297A (en) * | 2017-11-21 | 2018-02-27 | 王强 | Differential pressure transmitter verifies detecting system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20140426 |