CN103234698A - Low-static pressure differential transmitter calibration instrument - Google Patents
Low-static pressure differential transmitter calibration instrument Download PDFInfo
- Publication number
- CN103234698A CN103234698A CN2013101504769A CN201310150476A CN103234698A CN 103234698 A CN103234698 A CN 103234698A CN 2013101504769 A CN2013101504769 A CN 2013101504769A CN 201310150476 A CN201310150476 A CN 201310150476A CN 103234698 A CN103234698 A CN 103234698A
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- pressure transmitter
- solenoid valve
- valve
- standard deviation
- pressure differential
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Abstract
The invention discloses a low-static pressure differential transmitter calibration instrument, which belongs to the field of automation calibration instruments and meters. The calibration instrument is characterized by comprising a bottom plate, a side plate and a panel, wherein a power switch, an output pressure interface, an alarm indicator, a liquid crystal display (LCD), a keyboard, an input signal interface, a standard pressure differential transmitter, a standard pressure differential transmitter interface, a calibrated pressure differential transmitter interface, a standard pressure differential transmitter support and a calibrated pressure differential transmitter support are installed on the panel, and three valve groups and a micrometering valve are arranged on the side plate. The calibration instrument can be manually or full-automatically used for calibrating the pressure differential transmitter, is provided with overpressure alarm and protection and has the characteristics of compact structure, convenience in operation, quick calibration and in-time and accurate dynamic display, and the static pressure limit of the calibration instrument is 1MPa.
Description
Technical field
The present invention relates to a kind of low differential static pressure pressure transmitter tester, belong to instrument and meter for automation tester field.
Background technology
Differential pressure transmitter is widely used in the measurement of flow and liquid level, mostly use mesohigh differential static pressure pressure transmitter tester to carry out verification to the differential pressure transmitter verification now, and adopt manual adjustments static pressure and differential pressure signal, not only operate location difficulty, easily produce oil leakage phenomenon, also easily produce artificial reading error.
Summary of the invention
It is pressurized air that the technical problem to be solved in the present invention is a kind of pressure medium is provided, have manual and automatic verification, be limited to a kind of low differential static pressure pressure transmitter tester of 1MPa automatically on location and check point, the static pressure.
For achieving the above object, the present invention realizes by following technical scheme: low differential static pressure pressure transmitter tester, it is characterized in that, comprise base plate, side plate and panel, at described panel power switch is installed, the output voltage interface, alarm lamp, LCD shows, keyboard, the input signal interface, the standard deviation pressure transmitter, standard deviation pressure transmitter joint, by school differential pressure transmitter joint, standard deviation pressure transmitter support, by school differential pressure transmitter support, described side plate is provided with three valve groups, micrometering valve is equipped with air compressor machine at described base plate, gas-holder, air strainer, solenoid valve A, solenoid valve B, solenoid valve C, solenoid valve D, the normal pressure transmitter, power panel, circuit board, relay board, stiffening plate.
Further, above-mentioned LCD shows, for double screen shows.
Further, above-mentioned output voltage interface is exported direct current 24V and 5V voltage.
Further, at above-mentioned circuit board single-chip microcomputer and A/D converter are installed.
Further, above-mentioned solenoid valve A, solenoid valve B, solenoid valve C, solenoid valve D are fixedly mounted on the stiffening plate, and stiffening plate is by being welded on the bolt on the base plate.
Further, syndeton according to gas circuit, air compressor machine is connected with gas-holder, gas-holder connects an end of air strainer, the other end of air strainer connects the end of solenoid valve A, the other end of solenoid valve A divides three the tunnel, one the tunnel connects the normal pressure transmitter, in addition two-way is attempted by three valve group input ends, three valve group input ends also and be connected to solenoid valve B, three valve group output terminals also are connected to micrometering valve, three valve group output terminals also are connected to standard deviation pressure transmitter joint and by school differential pressure transmitter joint, connect the standard deviation pressure transmitter between the standard deviation pressure transmitter joint, a termination of three valve group output terminals has solenoid valve C, and the other end of three valve group output terminals is connected to solenoid valve D.
Further, syndeton according to circuit, power switch, power panel, circuit board, relay board connect successively, standard deviation pressure transmitter, normal pressure transmitter, input signal interface are connected with A/D converter respectively, A/D converter, keyboard, LCD show, relay board is connected with single-chip microcomputer respectively, and solenoid valve A, solenoid valve B, solenoid valve C, solenoid valve D, air compressor machine are connected with relay board respectively.
The invention has the beneficial effects as follows; both can manually also can automatically carry out verification to manometer; can manually once set a plurality of checkpoints; also can the automatic setting checkpoint; automatically positive revesal is made pressure; arrive checkpoint and stop automatically, and be provided with over voltage alarm and protection, be limited to 1MPa on the static pressure pressure checking.The present invention has compact conformation, and is easy to operate, and verification is quick, dynamically shows characteristics promptly and accurately.
Description of drawings
Fig. 1 is the solid of the low differential static pressure pressure transmitter tester of the present invention and panel, side plate arrangenent diagram;
Fig. 2 is the backplane figure of the low differential static pressure pressure transmitter tester of the present invention;
Fig. 3 is the gas circuit connection layout of the low differential static pressure pressure transmitter tester of the present invention;
Fig. 4 is the circuit structure diagram of the low differential static pressure pressure transmitter tester of the present invention;
Fig. 5 is the master routine figure of the low differential static pressure pressure transmitter tester of the present invention.
The mark implication is as follows in the accompanying drawing:
1, panel 2, base plate 3, side plate 4, air compressor machine 5, gas-holder
6, air strainer 7, three valve groups 8, micrometering valve 9, solenoid valve A
10, solenoid valve B 11, solenoid valve C 12, solenoid valve D
13, normal pressure transmitter 14, standard deviation pressure transmitter 15, standard deviation pressure transmitter joint
16, by school differential pressure transmitter joint 17, stiffening plate 18, power switch
19, output voltage interface 20, alarm lamp 21, LCD demonstration 22, keyboard
23, input signal interface 24, power panel 25, circuit board 26, relay board
27, A/D converter 28, single-chip microcomputer 29, standard deviation pressure transmitter support
30, by school differential pressure transmitter support.
Embodiment
The present invention is described in further detail below in conjunction with diagram and specific embodiment.
With reference to Fig. 1, Fig. 2, the present invention hangs down differential static pressure pressure transmitter tester, comprise base plate 2, side plate 3 and panel 1, at described panel 1 power switch 18 of installation is arranged, output voltage interface 19, alarm lamp 20, LCD shows 21, keyboard 22, input signal interface 23, standard deviation pressure transmitter 14, standard deviation pressure transmitter joint 15, by school differential pressure transmitter joint 16, standard deviation pressure transmitter support 29, by school differential pressure transmitter support 30, described side plate 3 is provided with three valve groups 7, micrometering valve 8 is equipped with air compressor machine 4 at described base plate 2, gas-holder 5, air strainer 6, solenoid valve A9, solenoid valve B10, solenoid valve C11, solenoid valve D12, normal pressure transmitter 13, power panel 24, circuit board 25, relay board 26, stiffening plate 17.
Further, described LCD shows 21, for double screen shows.
Further, described output voltage interface 19 output direct current 24V and 5V voltages.
Further, at described circuit board 25 single-chip microcomputer 28 and A/D converter 27 are installed.
Further, described solenoid valve A9, solenoid valve B10, solenoid valve C11, solenoid valve D12, be fixedly mounted on the stiffening plate 17, described stiffening plate 17 is by being welded on the bolt on the base plate 2.
With reference to Fig. 3, gas circuit syndeton of the present invention is, air compressor machine 4 is connected with gas-holder 5, gas-holder 5 connects an end of air strainer 6, the other end of air strainer 6 connects the end of solenoid valve A9, the other end of solenoid valve A9 divides three the tunnel, one the tunnel connects normal pressure transmitter 13, two-way is attempted by three valve groups, 7 input ends in addition, three valve groups, 7 input ends also and be connected to solenoid valve B10, three valve groups, 7 output terminals also are connected to micrometering valve 8, three valve groups, 7 output terminals also are connected to standard deviation pressure transmitter joint 15 and by school differential pressure transmitter joint 16, a termination that is connected to standard deviation pressure transmitter 14, three valve groups 7 output terminals between the standard deviation pressure transmitter joint 15 has solenoid valve C11, the other end of three valve groups, 7 output terminals is connected to solenoid valve D12, is connected by the school differential pressure transmitter between the school differential pressure transmitter joint 16.
With reference to Fig. 4, circuit connection structure of the present invention is, power switch 18, power panel 24, circuit board 25, relay board 26 connect successively, standard deviation pressure transmitter 14, normal pressure transmitter 13, input signal interface 23 are connected with A/D converter 27 respectively, A/D converter 27, keyboard 22, LCD demonstration 21, relay board 26 are connected with single-chip microcomputer 28 respectively, and solenoid valve A9, solenoid valve B10, solenoid valve C11, solenoid valve D12, air compressor machine 4 are connected with relay board 26 respectively.
Standard deviation pressure transmitter 14 is measured current differential pressure value in real time, and normal pressure transmitter 13 is measured in real time when static pressure pressure, and tested differential pressure transmitter is fixedly mounted on by on the school differential pressure transmitter support 30, is connected with input signal interface 23 by the output signal of school differential pressure.
The output signal of the output signal of standard deviation pressure transmitter 14 and tested differential pressure transmitter is delivered to LCD and is shown that 21 show.
With reference to Fig. 5; master routine figure of the present invention is; after the energising start; system is initialization at first; set instrument zero point by keyboard 22 then; pressure unit; static pressure pressure; differential pressure range; checkpoint; positive revesal; manual; enter checking routine after determining; single-chip microcomputer 28 is according to the signal of standard deviation pressure transmitter 14 then; by relay board 26 control air compressor machines 4; solenoid valve A9; solenoid valve B10; solenoid valve C11; the break-make of solenoid valve D12; finish up to verification; static pressure is measured by normal pressure transmitter 13 during the verification; the standard value of differential pressure is measured by standard deviation pressure transmitter 14; out-of-limit as signal, then alarm lamp 20 sends alerting signal, simultaneously relay board 26 control air compressor machines 4; solenoid valve A9; solenoid valve B10; solenoid valve C11; solenoid valve D12 makes corresponding protection action.
Manually during verification, operation micrometering valve 8 is regulated differential pressures.
The present invention hangs down differential static pressure pressure transmitter tester, and its static pressure upper pressure limit is 1MPa.
By reference to the accompanying drawings exemplary description is carried out in invention above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the non-substantial improvement of having adopted method design of the present invention and technical scheme to carry out; perhaps without improving method design of the present invention and technical scheme are applied directly to other occasions, all within protection scope of the present invention.
Claims (1)
1. one kind low differential static pressure pressure transmitter tester, it is characterized in that, comprise base plate (2), side plate (3) and panel (1), at described panel (1) installation power switch (18) is arranged, output voltage interface (19), alarm lamp (20), LCD shows (21), keyboard (22), input signal interface (23), standard deviation pressure transmitter (14), standard deviation pressure transmitter joint (15), by school differential pressure transmitter joint (16), standard deviation pressure transmitter support (29), by school differential pressure transmitter support (30), described side plate (3) is provided with three valve groups (7), micrometering valve (8), at described base plate (2) air compressor machine (4) is installed, gas-holder (5), air strainer (6), solenoid valve A (9), solenoid valve B (10), solenoid valve C (11), solenoid valve D (12), normal pressure transmitter (13), power panel (24), circuit board (25), relay board (26), stiffening plate (17) has been equipped with single-chip microcomputer (28) and A/D converter (27) at described circuit board (25).
Comprise above-mentioned parts, syndeton according to gas circuit is, air compressor machine (4) is connected with gas-holder (5), gas-holder (5) connects an end of air strainer (6), the other end of air strainer (6) connects the end of solenoid valve A (9), the other end of solenoid valve A (9) divides three the tunnel, one the tunnel connects normal pressure transmitter (13), two-way is attempted by three valve group (7) input ends in addition, three valve group (7) input ends also and be connected to solenoid valve B (10), three valve group (7) output terminals also are connected to micrometering valve (8), three valve group (7) output terminals also are connected to standard deviation pressure transmitter joint (15) and by school differential pressure transmitter joint (16), be connected to standard deviation pressure transmitter (14) between the standard deviation pressure transmitter joint (15), a termination of three valve group (7) output terminals has solenoid valve C (11), and the other end of three valve group (7) output terminals is connected to solenoid valve D (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101504769A CN103234698A (en) | 2013-04-24 | 2013-04-24 | Low-static pressure differential transmitter calibration instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101504769A CN103234698A (en) | 2013-04-24 | 2013-04-24 | Low-static pressure differential transmitter calibration instrument |
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| CN103234698A true CN103234698A (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101504769A Pending CN103234698A (en) | 2013-04-24 | 2013-04-24 | Low-static pressure differential transmitter calibration instrument |
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| CN (1) | CN103234698A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165728A (en) * | 2014-09-01 | 2014-11-26 | 北京斯贝克科技有限责任公司 | Pressure controller high in accuracy |
| CN104390740A (en) * | 2014-12-04 | 2015-03-04 | 南京化工职业技术学院 | Automatic low pressure generating device |
| CN104406740A (en) * | 2014-12-04 | 2015-03-11 | 南京化工职业技术学院 | Low static pressure and differential pressure producer |
| CN107741297A (en) * | 2017-11-21 | 2018-02-27 | 王强 | Differential pressure transmitter verifies detecting system |
| CN109974932A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of instrument static pressure update the system and method |
| CN110440983A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of control method for fully automatic for the calibration of air compressor machine sensor parameters |
| CN113483947A (en) * | 2021-06-29 | 2021-10-08 | 中国航发沈阳发动机研究所 | Static pressure index detection device and method for differential pressure transmitter |
| CN114235274A (en) * | 2021-12-14 | 2022-03-25 | 泰安佳业环保科技有限公司 | Pressure and differential pressure checking system and method |
Citations (7)
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| JPH08178782A (en) * | 1994-12-27 | 1996-07-12 | Yokogawa Electric Corp | Differential pressure measuring apparatus |
| DE10352308A1 (en) * | 2003-11-06 | 2005-06-09 | Endress + Hauser Gmbh + Co. Kg | Calibration method e.g. for differential pressure sensors, involves having two pressure entrances and seizing difference of pressure with high pressures with pressure entrances are attached to two pressure exits of hydraulic system |
| CN2828776Y (en) * | 2005-06-21 | 2006-10-18 | 上海威尔泰工业自动化股份有限公司 | Static pressure drift testing device of differential transmitter |
| CN1928520A (en) * | 2006-09-20 | 2007-03-14 | 李丹佳 | Detection method and dedicated equipment for pressure difference measuring device |
| CN201819768U (en) * | 2010-04-02 | 2011-05-04 | 陕西创威科技有限公司 | Full-automatic vacuum calibrator |
| CN102778332A (en) * | 2011-05-11 | 2012-11-14 | 中国科学院光电研究院 | Micro differential pressure generating and calibrating device |
| CN202614465U (en) * | 2012-06-19 | 2012-12-19 | 杭州石林自动化工程有限公司 | Full automatic pressure checking table of high hydrostatic pressure differential pressure transmitter |
-
2013
- 2013-04-24 CN CN2013101504769A patent/CN103234698A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178782A (en) * | 1994-12-27 | 1996-07-12 | Yokogawa Electric Corp | Differential pressure measuring apparatus |
| DE10352308A1 (en) * | 2003-11-06 | 2005-06-09 | Endress + Hauser Gmbh + Co. Kg | Calibration method e.g. for differential pressure sensors, involves having two pressure entrances and seizing difference of pressure with high pressures with pressure entrances are attached to two pressure exits of hydraulic system |
| CN2828776Y (en) * | 2005-06-21 | 2006-10-18 | 上海威尔泰工业自动化股份有限公司 | Static pressure drift testing device of differential transmitter |
| CN1928520A (en) * | 2006-09-20 | 2007-03-14 | 李丹佳 | Detection method and dedicated equipment for pressure difference measuring device |
| CN201819768U (en) * | 2010-04-02 | 2011-05-04 | 陕西创威科技有限公司 | Full-automatic vacuum calibrator |
| CN102778332A (en) * | 2011-05-11 | 2012-11-14 | 中国科学院光电研究院 | Micro differential pressure generating and calibrating device |
| CN202614465U (en) * | 2012-06-19 | 2012-12-19 | 杭州石林自动化工程有限公司 | Full automatic pressure checking table of high hydrostatic pressure differential pressure transmitter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165728A (en) * | 2014-09-01 | 2014-11-26 | 北京斯贝克科技有限责任公司 | Pressure controller high in accuracy |
| CN104390740A (en) * | 2014-12-04 | 2015-03-04 | 南京化工职业技术学院 | Automatic low pressure generating device |
| CN104406740A (en) * | 2014-12-04 | 2015-03-11 | 南京化工职业技术学院 | Low static pressure and differential pressure producer |
| CN107741297A (en) * | 2017-11-21 | 2018-02-27 | 王强 | Differential pressure transmitter verifies detecting system |
| CN109974932A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of instrument static pressure update the system and method |
| CN110440983A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of control method for fully automatic for the calibration of air compressor machine sensor parameters |
| CN113483947A (en) * | 2021-06-29 | 2021-10-08 | 中国航发沈阳发动机研究所 | Static pressure index detection device and method for differential pressure transmitter |
| CN114235274A (en) * | 2021-12-14 | 2022-03-25 | 泰安佳业环保科技有限公司 | Pressure and differential pressure checking system and method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |