CN202255745U - Multifunctional industrial pressure gage - Google Patents
Multifunctional industrial pressure gage Download PDFInfo
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- CN202255745U CN202255745U CN2011203502209U CN201120350220U CN202255745U CN 202255745 U CN202255745 U CN 202255745U CN 2011203502209 U CN2011203502209 U CN 2011203502209U CN 201120350220 U CN201120350220 U CN 201120350220U CN 202255745 U CN202255745 U CN 202255745U
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Abstract
The utility model provides a multifunctional industrial pressure gage, which is capable of supporting a plurality of types of pressure sensors by adopting an imagination reading mode and combining with computer software and electronic circuit technology, is suitable for industrial measuring systems and pressure measuring systems, and is provided with a multi-point control function, a paperless recording function, a pointer type displaying function and a remote monitoring function. The multifunctional industrial pressure gage comprises a displaying module, a displaying drive part and a control part. The displaying module comprises a pointer and a dial plate. The control part comprises a single chip microcomputer serving as a main control unit and a sensor module. The sensor module receives a signal transmitted by a sensor and sends the signal to the single chip microcomputer. The single chip microcomputer gives an instruction to the displaying drive part to drive the pointer to rotate to a corresponding position on the dial plate, and indicates a corresponding value of the signal. The control part comprises a storage module, a power supply module, a peripheral control module and a remote monitoring module. The multifunctional industrial pressure gage comprises a setting module which serves as the interactive input end.
Description
Technical field
The utility model belongs to the industry measurement equipment technical field, relates in particular to a kind of multifunctional industrial tensimeter.
Background technology
In the prior art, the common used in industry tensimeter is a kind of pointer mechanical compression table; Pointer mechanical compression table adopts spring-tube type structure or bellows-type structure etc., utilizes be under pressure after expansion or negative pressure such as bourdon tube or bellows to shrink, and drives the movement gear mechanism and orders about pen travel, indication measurand pressure size on the tensimeter dial plate.This tensimeter wheel output control electric contact modes that adopt have bound contact metal activation signal at most more, make external relay on-off electricity come the opertaing device execution work.
Pointer mechanical compression table has its advantage: easy for installation, monitoring is clear and definite, because of human brain has the iconic memory function, uses the image conversion reading pattern of pointer, and the operator reacts soon, observes directly perceived; As long as in setting the working pressure scope, pointer mechanical compression table just can be guaranteed in proper working order, no matter gauge hand is to be used for surveillance equipment when normally moving or not moving in the equipment.Especially on large equipment, when using the tensimeter of most amounts, use the image conversion reading pattern of pointer, the control personnel are not easy eye fatigue, come into plain view.
But pointer mechanical compression table has its shortcoming, and the pointer stem-winder is with mechanism driving such as spring-tube type or bellows-types, causes that driving parts is easy to wear, frictional resistance brings sluggishness and temperature effect causes influences such as rising-heat contracting-cold; Simultaneously, pipeline is very long when needing remote monitor, has the danger of gas leakage leakage, must arrange control personnel inspection trips nearby, the waste of manpower resource, and managerial personnel can not in time grasp data cases.Simultaneously, do not possess multiple spot control function, no paper writing function, pointer Presentation Function, and remote monitoring function.
In the prior art, another kind of common used in industry tensimeter is the intelligent digital tensimeter, utilizes pressure transducer or carries pressure transducer, and sensor signal combines computer software to make tensimeter move towards digital intelligentization.Intelligent digital pressure gauge has the advantage that because there is no mechanical pressure gauge pointer is used with a spring tube or bellows and other institutions transmission structure, it will not cause transmission parts wear, friction resistance hysteresis, and temperature effects up shrinkage effects caused by inaccurate indication of the phenomenon, relatively intelligent digital pressure gauge or pressure gauge accuracy can easily be done accurately, is not affected by the above-mentioned shortcomings affect mechanical pressure gauge with pressure measurement, alarm, transmission and control Subscribe to Newsletter and functions.In addition, the intelligent digital tensimeter does not receive the restriction of duct length, supports multiple pressure transducer, multiple spot control function, no paper writing function, pointer Presentation Function, reaches remote monitoring function.
The manometric shortcoming of intelligent digital is: the change of display digit, and the monitor staff does not have iconic memory because of the numeral of human eye when doing monitoring device, and the human eye easy fatigue caused maloperation or device damage when especially there was majority amount instrument in integrated mill.Digital display manometer shows clearly inadequately in addition, and in voltage disturbance and unsettled situation, or display digit can be beated and do not seen Chu when pressure variation is frequent, and under the strong environment of light, also is difficult to see clearly.
Summary of the invention
The purpose of the utility model is intended to solve the deficiency of intelligent digital tensimeter and pointer mechanical compression table; A kind of multifunctional industrial tensimeter is provided; Adopt image conversion reading pattern; In conjunction with computer software and electronic circuit technology, have multiple functions such as multiple spot control, no paper record, remote observation.
The utility model is realized through following technical scheme:
The multifunctional industrial tensimeter includes display module, display driver parts and control assembly; Wherein, said display module includes pointer and dial plate, and said control assembly includes as the single-chip microcomputer of main control unit and sensor assembly, the signal of said sensor assembly receiving sensor transmission, and send to single-chip microcomputer to signal; Single-chip microcomputer instruction display driver parts drive pointer and turn to the dial plate relevant position, indicate the respective value of said signal.
Said control assembly includes:
Memory module, all detect data and operating state data in order to preserve the multifunctional industrial tensimeter;
Power module is in order to provide power supply;
Peripheral control module, in order to receive the instruction of single-chip microcomputer, the control peripheral equipment is carried out corresponding action.
Said control assembly includes: remote monitoring module also receives the control signal from remote supervisory and control(ling) equipment in order to output data to remote supervisory and control(ling) equipment.
Said multifunctional industrial tensimeter includes setting module, as interactive input end.
The beneficial effect of the utility model is following:
The multifunctional industrial tensimeter of the utility model; Because display module includes pointer and dial plate; Said control assembly includes as the single-chip microcomputer of main control unit and sensor assembly, the signal of said sensor assembly receiving sensor transmission, and send to single-chip microcomputer to signal; Single-chip microcomputer instruction display driver parts drive pointer and turn to the dial plate relevant position, indicate the respective value of said signal; Control assembly includes memory module, power module, peripheral control module, remote monitoring module; Can support multiple pressure transducer, the pressure-measuring system that is fit to multiple industry and automobile is used, and has multiple spot control function, no paper writing function, pointer Presentation Function, reaches remote monitoring function.This multifunctional industrial tensimeter can be made multiple spot setting and control warning lamp and peripheral equipment, and pointer demonstration can reach the remote observation reading of image conversion clearly, intuitively.
Description of drawings
Fig. 1 is the manometric theory diagram of the utility model multifunctional industrial;
Fig. 2 is the main TV structure synoptic diagram of the utility model multifunctional industrial tensimeter embodiment one;
Fig. 3 is the sectional structure synoptic diagram of the utility model multifunctional industrial tensimeter embodiment one;
Fig. 4 is the backsight structural representation of the utility model multifunctional industrial tensimeter embodiment one;
Fig. 5 is the main TV structure synoptic diagram of the utility model multifunctional industrial tensimeter embodiment two;
Fig. 6 is the sectional structure synoptic diagram of the utility model multifunctional industrial tensimeter embodiment two;
Fig. 7 is the backsight structural representation of the utility model multifunctional industrial tensimeter embodiment two;
Fig. 8 is the theory diagram of the utility model multifunctional industrial tensimeter single-chip microcomputer 3;
Fig. 9 is the manometric control method process flow diagram of the utility model multifunctional industrial.
Embodiment
The utility model discloses a kind of multifunctional industrial tensimeter,, include display module 1, display driver parts and control assembly like Fig. 1; Wherein, said display module 1 includes pointer and dial plate, and said control assembly includes as single-chip microcomputer of main control unit 3 and sensor assembly 4, the signal of said sensor assembly 4 receiving sensors transmission, and send to single-chip microcomputer 3 to signal; Single-chip microcomputer 3 instruction display driver parts drive pointer and turn to the dial plate relevant position, indicate the respective value of said signal.
Said control assembly also includes:
Said control assembly includes: remote monitoring module 8 also receives the control signal from remote supervisory and control(ling) equipment in order to output data to remote supervisory and control(ling) equipment.
Said multifunctional industrial tensimeter includes setting module 5, as interactive input end, in order to set multiple spot control input.
Embodiment one:
Like Fig. 1,2,3, shown in 4; Said multifunctional industrial tensimeter is a kind of emissive type instrument; Comprise watchcase, the table circle, translucent cover, pointer, have signs such as scale or numeral dial plate, warning lamp, dial plate liner plate, bulb backlight, gauge outfit, pass said dial plate is connected gauge outfit and pointer with the dial plate liner plate rotating shaft; Said dial plate liner plate is a LGP 10, on said LGP 10, is provided with the position, hole, and said bulb backlight is positioned at said Kong Weizhong; The light of the horizontal direction that said bulb backlight sends increases whole instrument viewable portion brightness through the LGP diffusion, and sign such as scale on the dial plate or numeral is high-visible; The below of LGP 10 is a wiring board 14.
Said display driver parts are motor drive module 2, and said multifunctional industrial tensimeter includes stepper motor 11, is arranged in the inner chamber of watchcase; The pointer of said display module 1 is fixed on the output shaft of stepper motor 11; Motor drive module 2 rotates control in order to the driving and the pointer of stepper motor.
Said setting module 5 includes pilot lamp 51 and button 52, and in order to controlling alarm numerical value, bound numerical value and multiple spot control numerical value to be set, setting module 5 sends to single-chip microcomputer 3 with the numerical value of setting; When the numerical value of multifunctional industrial gauge measurement is consistent with the numerical value of setting, the corresponding mechanism action of single-chip microcomputer 3 controls.
Said setting module 5 is built on the dial plate.
Said multifunctional industrial tensimeter includes the data transmission interface 12 and connector 13 in order to be connected external unit, sensor and power supply in order to the transmission data, is positioned at the rear portion of watchcase.
Like Fig. 8, single-chip microcomputer 3 comprises timing module 31, analog-to-digital conversion module 33, sending module 34, pulse-length modulation module 32 and control module 35; Timing module 31 and analog-to-digital conversion module 33 are connected with sensor assembly 4, the sample period of 33 pairs of sensor signals of control analog-to-digital conversion module; Sending module 34 is connected with remote monitoring module 8, continues output data and also receives the control signal from remote supervisory and control(ling) equipment to remote supervisory and control(ling) equipment; Pulse-length modulation module 32 is connected with motor drive module 2, continues the output pulse width modulation signal, control and drive stepping motor; Control module 35 is connected with timing module 31, display module 1, memory module 7, peripheral control module 9 and setting module 5.Control module 35 is connected with timing module 31 and memory module 7, does the storage control of memory module, setting data and time, date and the sensing data of the control of storage multiple spot; Control module 35 is connected with display module 1, controls the duty of bulb backlight and warning lamp; Control module 35 is connected with peripheral control module 9, the duty of control peripheral equipment; Control module 35 is connected with setting module 5, receives the setting of multiple spot control.
Embodiment two:
Like Fig. 1,5,6, shown in 7, present embodiment and embodiment one difference be, said setting module 5 adopts external structures, is connected with wiring board 14 in the watchcase through lead.
Ask for an interview Fig. 9, the manometric control method of above-mentioned multifunctional industrial comprises the steps;
Step S0001; Initializing set after the multifunctional industrial tensimeter is launched, initializing set comprise that pointer-type shows the initialization of make zero adjustment, data storage, the setting of multiple spot control, the control of warning lamp original state, the control of peripheral equipment original state, the control of bulb original state backlight, the initial setting of remote monitoring;
Step S0002, the data that obtain during with data initial value behind the initializing set or the running of follow-up multifunctional industrial tensimeter store memory module into;
Step S0003 judges whether external unit connects the manometric data output end of multifunctional industrial, on external unit connects, and after single-chip microcomputer 3 judgements and the affirmation, execution in step S0004; If external unit does not connect, direct execution in step S0005;
Step S0004 outputs to external unit with the data of memory module stored;
Step S0005, according to up-to-date data, drive stepping motor, control and moving hand position, and the duty of control warning lamp;
Step S0006 sends to the warning lamp duty of the watch-dog and the control watch-dog of far-end with up-to-date data, and receives the control signal that remote monitoring equipment sends the multifunctional industrial tensimeter;
Step S0007, according to up-to-date data, the duty of control peripheral equipment;
Step S0008 judges whether the single-chip microcomputer timing reaches the sample period of sensor signal, when timing reaches the sample period, and execution in step S0009; If timing does not reach the sample period, direct execution in step S0010;
Step S0009, the single-chip microcomputer timing has reached the sample period of sensor signal, carries out the sampling to sensor signal, and sampling numerical value obtains new data after single-chip microcomputer analog to digital conversion and formula calculation process;
Step S0010 judges whether to receive the signal that setting module sends, when single-chip microcomputer is judged and affirmation has reception signal, execution in step S011; Were it not for and receive signal, directly execution in step S002;
Step S0011, receive the signal that setting module 5 sends after, basis signal after the process type calculation process, obtains the setting data of multiple spot control with the setting numerical value of multiple spot control.
The utility model adopts module integrated, and power module 6 is responsible for supplying with to the electric energy of other modules, and keeps the stable of each modular power source.Setting module 5 is passing to single-chip microcomputer 3 calculating and execution from personnel's input signal.Sensor assembly 4 is input to single-chip microcomputer 3 inner analog-to-digital conversion modules 33 with the voltage of sensor, electric current, ohm signal to carry out analog to digital conversion and simultaneously data is calculated, and single-chip microcomputer 3 is also coordinated to carry out to other module controls.Micro-control slips the troops into several columns:
The first via drives pointer display module 1, stepper motor is rotated drive the pointer indication on index dial, let people clearly, intuitively, the reading of image conversion.
The second tunnel data that calculating is got well are stored into memory module, are ready for later data and read and gather.
Third Road single-chip microcomputer 3 offers remote monitoring module 8 with the signal of handling well, is transferred to remote monitoring equipment through sending module 34, and receives the control signal that remote monitoring equipment sends.
The No. four single-chip microcomputer 3 can be defeated by control module 35 to the make comparisons result of control signal of result and processing remote monitoring equipment of the upper limit of setting and lower limit and present working value, machine or electric control that can be to external world.
The utility model discloses a kind of multifunctional industrial tensimeter; Two kinds of instrument advantage exploitations to prior art form; With pressure sensor signal (can external or instrument is self-contained), utilize the power of CPU, be divided into the subsection signal; The highlyest drive step motor, can do high-precision meter (or consider manage into magnetic field angle drive coil motor can make the different brackets instrument) 300 jiaos of divisible 3600 micro-steppings.When pressure signal malleation or negative pressure (vapour pressure, hydraulic pressure) get into the pressure transducer sensor output voltage, electric current, or can select unlike signal or corresponding separately signal input CPU during resistance; The CPU operation is handled and is driven step motor, and the power of indication measured object shows that at gauge pointer this instrument is provided with power module, CPU; Sensor signal is handled (or sensor assembly), output control module, setting module (can pick out cable) guiding principle road output signaling module], this instrument can realize pressure survey; High-low pressure is reported to the police, control automatically, and the long distance prison shows; Long distance control, the monitoring of guiding principle road, no paper writing function.
This instrument can realize that also independent all the other modules of pressure display module are located at convenient installation of control enclosure and setting, can support multiple pressure transducer, is applicable to the demand of various working environments; Workplace at insufficient light can clearly show brightly; The pointer-type Presentation Function can provide reading simple and easy, quick, accurate, directly perceived, image conversion, has the function of remote observation; The multiple spot control function can be made multiple spot and set and control, and opertaing device comprises warning lamp and peripheral equipment; No paper writing function has data storage function, can store various data and data after starting.And support read functions, external apparatus are connected to the manometric data output end of multifunctional industrial, can the data read of storage be got external unit; Remote monitoring function sustainablely sends to the watch-dog of far-end with the up-to-date data that obtain, and the far-end user can directly observe reading and warning lamp duty.And the multifunctional industrial tensimeter can receive the control signal that remote monitoring equipment sends, the duty of control instrument, warning lamp and peripheral equipment.
Above-mentioned listed concrete implementation is nonrestrictive, and to one skilled in the art, in not departing from the utility model scope, various improvement and the variation carried out all belong to the protection domain of the utility model.
Claims (10)
1. the multifunctional industrial tensimeter includes display module (1), display driver parts and control assembly; It is characterized in that: said display module (1) includes pointer and dial plate; Said control assembly includes single-chip microcomputer (3) and the sensor assembly (4) as main control unit; The signal of said sensor assembly (4) receiving sensor transmission, and send to single-chip microcomputer (3) to signal; Single-chip microcomputer (3) instruction display driver parts drive pointer and turn to the dial plate relevant position, indicate the respective value of said signal.
2. multifunctional industrial tensimeter as claimed in claim 1 is characterized in that: said control assembly also includes:
Memory module (7) is in order to setting data and time, date and the sensing data of storage multiple spot control;
Power module (6) is in order to provide power supply; Power module (6) is electrically connected with single-chip microcomputer (3), sensor assembly (4), memory module (7), peripheral control module (9), remote monitoring module (8) and setting module (5) respectively; Be responsible for electric energy and supply with, and keep the stable of each modular power source;
Peripheral control module (9), in order to receive the instruction of single-chip microcomputer, the peripheral equipment that control is connected is carried out corresponding action.
3. multifunctional industrial tensimeter as claimed in claim 2 is characterized in that: said control assembly includes: remote monitoring module (8) also receives the control signal from remote supervisory and control(ling) equipment in order to output data to remote supervisory and control(ling) equipment.
4. multifunctional industrial tensimeter as claimed in claim 3 is characterized in that: said multifunctional industrial tensimeter includes setting module (5), as interactive input end, in order to set multiple spot control input.
5. multifunctional industrial tensimeter as claimed in claim 4; It is characterized in that: said multifunctional industrial tensimeter is a kind of emissive type instrument; Comprise watchcase, the table circle, translucent cover, pointer, have signs such as scale or numeral dial plate, warning lamp, dial plate liner plate, bulb backlight, gauge outfit, pass said dial plate is connected gauge outfit and pointer with the dial plate liner plate rotating shaft; Said dial plate liner plate is LGP (10); On said LGP (10), be provided with the position, hole; Said bulb backlight is positioned at said Kong Weizhong, and the light of the horizontal direction that said bulb backlight sends increases whole instrument viewable portion brightness through the LGP diffusion, and sign such as scale on the dial plate or numeral is high-visible; The below of LGP (10) is wiring board (14).
6. multifunctional industrial tensimeter as claimed in claim 5 is characterized in that: said display driver parts are motor drive module (2), and said multifunctional industrial tensimeter includes stepper motor (11), are arranged in the inner chamber of watchcase; The pointer of said display module (1) is fixed on the output shaft of stepper motor (11); Motor drive module (2) rotates control in order to the driving and the pointer of stepper motor.
7. like claim 4 or 5 or 6 described multifunctional industrial tensimeters; It is characterized in that: said setting module (5) includes pilot lamp (51) and button (52); In order to controlling alarm numerical value, bound numerical value and multiple spot control numerical value to be set, setting module (5) sends to single-chip microcomputer (3) with the numerical value of setting; When the numerical value of multifunctional industrial gauge measurement was consistent with the numerical value of setting, single-chip microcomputer (3) was controlled corresponding mechanism action.
8. multifunctional industrial tensimeter as claimed in claim 5; It is characterized in that: said multifunctional industrial tensimeter includes the data transmission interface (12) and connector (13) in order to be connected external unit, sensor and power supply in order to the transmission data, is positioned at the rear portion of watchcase.
9. multifunctional industrial tensimeter as claimed in claim 5 is characterized in that: said single-chip microcomputer (3) comprises timing module (31), analog-to-digital conversion module (33), sending module (34), pulse-length modulation module (32) and control module (35); Timing module (31) and analog-to-digital conversion module (33) are connected with sensor assembly (4), and control analog-to-digital conversion module (33) is to the sample period of sensor signal; Sending module (34) is connected with remote monitoring module (8), continues output data and also receives the control signal from remote supervisory and control(ling) equipment to remote supervisory and control(ling) equipment; Pulse-length modulation module (32) is connected with motor drive module (2), continues the output pulse width modulation signal, control and drive stepping motor; Control module (35) is connected with timing module (31), display module (1), memory module (7), peripheral control module (9) and setting module (5); Control module (35) is connected with timing module (31) and memory module (7), does the storage control of memory module, setting data and time, date and the sensing data of the control of storage multiple spot; Control module (35) is connected with display module (1), controls the duty of bulb backlight and warning lamp; Control module (35) is connected with peripheral control module (9), the duty of control peripheral equipment; Control module (35) is connected with setting module (5), receives the setting of multiple spot control.
10. multifunctional industrial tensimeter as claimed in claim 7 is characterized in that: said setting module (5) is built on the dial plate or said setting module (5) adopts external structure, is connected with wiring board (14) in the watchcase through lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203502209U CN202255745U (en) | 2011-09-19 | 2011-09-19 | Multifunctional industrial pressure gage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203502209U CN202255745U (en) | 2011-09-19 | 2011-09-19 | Multifunctional industrial pressure gage |
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| CN202255745U true CN202255745U (en) | 2012-05-30 |
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| CN2011203502209U Withdrawn - After Issue CN202255745U (en) | 2011-09-19 | 2011-09-19 | Multifunctional industrial pressure gage |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998050A (en) * | 2011-09-19 | 2013-03-27 | 珠海三德艺电子有限公司 | Multifunctional industrial pressure gauge and control method thereof |
| CN106052954A (en) * | 2016-08-02 | 2016-10-26 | 马鞍山市亿格仪表有限公司 | Digital display pressure meter with easy reading |
| CN106441693A (en) * | 2016-09-12 | 2017-02-22 | 彭希南 | Double limiting digital pressure gauge |
| CN106441696A (en) * | 2016-09-12 | 2017-02-22 | 彭希南 | Telemetering digital pressure gauge |
| CN107514358A (en) * | 2017-09-26 | 2017-12-26 | 无锡市凯丰压力表有限公司 | A kind of pressure gauge for compression pump |
| CN107576442A (en) * | 2017-09-29 | 2018-01-12 | 无锡市凯丰压力表有限公司 | A kind of pressure gauge for liquefied gas |
| CN108375448A (en) * | 2018-04-28 | 2018-08-07 | 广东电网有限责任公司 | Pressure gauge and pressure monitoring system |
| CN109540378A (en) * | 2018-12-20 | 2019-03-29 | 安徽天康(集团)股份有限公司 | A kind of distance type pressure gauge with monitoring function |
| CN110631758A (en) * | 2018-06-25 | 2019-12-31 | 中国石油化工股份有限公司 | Electronic driving device for double-bellows differential pressure gauge |
| CN112964420A (en) * | 2021-02-24 | 2021-06-15 | 北京康斯特仪表科技股份有限公司 | Pressure calibration device |
-
2011
- 2011-09-19 CN CN2011203502209U patent/CN202255745U/en not_active Withdrawn - After Issue
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998050B (en) * | 2011-09-19 | 2014-12-31 | 珠海三德艺电子有限公司 | Multifunctional industrial pressure gauge and control method thereof |
| CN102998050A (en) * | 2011-09-19 | 2013-03-27 | 珠海三德艺电子有限公司 | Multifunctional industrial pressure gauge and control method thereof |
| CN106052954A (en) * | 2016-08-02 | 2016-10-26 | 马鞍山市亿格仪表有限公司 | Digital display pressure meter with easy reading |
| CN106052954B (en) * | 2016-08-02 | 2019-09-10 | 马鞍山市亿格仪表有限公司 | A kind of easy-to-read digital display manometer |
| CN106441693B (en) * | 2016-09-12 | 2019-02-19 | 彭希南 | Double limit digital pressure gauges |
| CN106441693A (en) * | 2016-09-12 | 2017-02-22 | 彭希南 | Double limiting digital pressure gauge |
| CN106441696A (en) * | 2016-09-12 | 2017-02-22 | 彭希南 | Telemetering digital pressure gauge |
| CN107514358A (en) * | 2017-09-26 | 2017-12-26 | 无锡市凯丰压力表有限公司 | A kind of pressure gauge for compression pump |
| CN107576442A (en) * | 2017-09-29 | 2018-01-12 | 无锡市凯丰压力表有限公司 | A kind of pressure gauge for liquefied gas |
| CN108375448A (en) * | 2018-04-28 | 2018-08-07 | 广东电网有限责任公司 | Pressure gauge and pressure monitoring system |
| CN108375448B (en) * | 2018-04-28 | 2024-05-03 | 广东电网有限责任公司 | Pressure gauge and pressure monitoring system |
| CN110631758A (en) * | 2018-06-25 | 2019-12-31 | 中国石油化工股份有限公司 | Electronic driving device for double-bellows differential pressure gauge |
| CN109540378A (en) * | 2018-12-20 | 2019-03-29 | 安徽天康(集团)股份有限公司 | A kind of distance type pressure gauge with monitoring function |
| CN112964420A (en) * | 2021-02-24 | 2021-06-15 | 北京康斯特仪表科技股份有限公司 | Pressure calibration device |
| CN112964420B (en) * | 2021-02-24 | 2023-09-22 | 北京康斯特仪表科技股份有限公司 | Pressure calibration device |
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