CN105806553A - High-pressure sensor - Google Patents
High-pressure sensor Download PDFInfo
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- CN105806553A CN105806553A CN201610390235.5A CN201610390235A CN105806553A CN 105806553 A CN105806553 A CN 105806553A CN 201610390235 A CN201610390235 A CN 201610390235A CN 105806553 A CN105806553 A CN 105806553A
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- seal cover
- pressure sensor
- high pressure
- binding post
- joint
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0672—Leakage or rupture protection or detection
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of sensors and discloses a high-pressure sensor to solve the problem of low safety of high-pressure sensors in the prior art. The high-pressure sensor comprises a joint, a pressure-sensitive diaphragm, an inner seal cover and an outer seal cover. The top of the joint is provided with a first concave step, a second concave step and a third concave step, and the first concave step, the second concave step and the third concave step are fixedly connected with the pressure-sensitive diaphragm, the inner seal cover and the outer seal cover sequentially from inside to outside. First binding posts are arranged at the top of the inner seal cover, a connector socket used for external connection with an electric wire is arranged at the top of the outer seal cover, and the first binding posts are connected with the pressure-sensitive diaphragm and the connector socket through electric wires respectively. The joint is provided with a through hole, the pressure-sensitive diaphragm is provided with an opening, and the opening faces the through hole and is communicated with the through hole. The high-pressure sensor is mainly used for monitoring pressures of high-pressure fluids. Due to adoption of a dual sealing structure, safety in use of the high-pressure sensor is greatly improved, and the high-pressure sensor can be used for pressure monitoring of toxic and harmful high-pressure fluids.
Description
Technical field
The present invention relates to sensor technical field, especially relate to a kind of high pressure sensor.
Background technology
Pressure is one of important technical parameter in commercial production, accurately measures and controls pressure and is to ensure that commercial production is run well, and then realizes the important step of the purposes such as high yield, high-quality, low consumption and safety in production.
Pressure transducer is a kind of sensor the most commonly used in industrial practice, and it is widely used in various industrial stresses monitoring of environmental, relates to the pressure testing and controlling of the various industrial pipelines such as water conservancy and hydropower, railway traffic, intelligent building, Aero-Space and section's grinding device.The major function of pressure transducer is to convert the physical pressure of fluid to be measured or gas to the signal of telecommunication to be transferred to instrument or controller.
Difference according to measurand, pressure transducer has different specifications and models and pressure monitoring scope, for instance, the height according to the pressure of monitoring object, user can select low pressure sensor and high pressure sensor.In general, pressure is more high, also can be more high to the designing requirement of sensor, while ensureing to measure function, it is necessary to consider the safe performance indexes of high pressure sensor.
But, high pressure sensor internal structure sealing effectiveness of the prior art is poor, and applicable operating pressure is relatively low, especially that the pressure monitoring safety of poisonous and harmful liquid is poor, it is impossible to meet the user demand of part chemical field.
Summary of the invention
It is an object of the invention to provide a kind of high pressure sensor, the problem low to solve high pressure sensor security performance of the prior art.
The present invention provides a kind of high pressure sensor, including: joint, pressure sensitive film, inner seal cover and external seal cover, the top of described joint is provided with the described pressure sensitive film that is fixedly connected sequentially from inside to outside, first concave station of described inner seal cover and described external seal cover, second concave station and the 3rd concave station, described inner seal cover top is provided with the first binding post, described external seal cover top is provided with the connector socket for external cord, described first binding post is connected with described pressure sensitive film and described connector socket respectively by electric wire, described joint is provided with through hole, described pressure sensitive film is provided with towards described through hole and the opening that communicates therewith.
Preferably, described joint, described inner seal cover and described external seal cover are made by resistant to hydrogen rustless steel.
Wherein, described pressure sensitive film top is provided with microcircuit, and described first binding post is connected with described microcircuit by electric wire.
Further, the top of described inner seal cover is fixedly connected with insulator seal contact pin, and described first binding post is arranged in described insulator seal contact pin.
Further, being welded and fixed by kovar alloy between described insulator seal contact pin and described first binding post and described inner seal cover, described insulator seal contact pin is crunch seal sheet.
Wherein, described connector socket lower end is provided with second binding post corresponding with described first binding post, and described first binding post is connected with described second binding post by electric wire.
Preferably, described pressure sensitive film, described inner seal cover and described external seal cover are welded and fixed with described first concave station, the second concave station and the 3rd concave station respectively.
Specifically, described connector socket periphery is provided with screw thread, and described external seal cover top is provided with opening, and the opening of described external seal cover is provided with the screw thread matched with described connector socket.
Further, described connector socket and described external seal cover are connected by screw.
Preferably, the periphery of described joint bottom is provided with screw thread.
Relative to prior art, high pressure sensor of the present invention has the advantage that
High pressure sensor provided by the invention is in use, joint is connected with the container threads holding liquid, by joint bottom tapering portions and threaded formation sealing surface between the corresponding vessel port of installing on container, and installing sealing gasket realizes the high leakproofness of system between sealing surface.
Liquid to be measured enters the through hole of joint, pressure sensitive film is produced compressing and causes that pressure sensitive film produces deformation, and by being plated in the microcircuit at pressure sensitive film top, deformation data is converted into the signal of telecommunication, by electric wire via reaching display instrument or controller after the first binding post and connector socket.
The present invention adopts and is fixedly connected to form the first resealing structure between the first concave station of double sealing structure, pressure sensitive film and joint, is fixedly connected to form the second resealing structure between inner seal cover and insulator seal contact pin, the first binding post and the second concave station of joint.
Therefore compared with prior art, the present invention can be used in the pressure monitoring of gases at high pressure, highly pressurised liquid, is particularly suited for the pressure monitoring of high pressure poisonous and harmful liquid, and operating pressure may be up to 60Mpa.Pressure sensitive film once by high pressure liquid destroy after, monitoring liquid can be played double safeguard function by the second resealing structure, thus avoiding poisonous and harmful liquid to be diffused into external environment, human body is damaged, thus the security performance being greatly improved in high pressure sensor use procedure.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the high pressure sensor that Fig. 1 provides for the embodiment of the present invention；
The structural representation of inner seal cover and joint in the high pressure sensor that Fig. 2 provides for the embodiment of the present invention；
The side view of the high pressure sensor that Fig. 3 provides for the embodiment of the present invention.
Accompanying drawing labelling:
1-joint；11-the first concave station；12-the second concave station；13-the 3rd concave station；14-through hole；2-pressure sensitive film；3-inner seal cover；31-insulator seal contact pin；311-the first binding post；4-external seal cover；41-connector socket；411-the second binding post.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward ", "front", "rear" be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd " are only for descriptive purposes, and it is not intended that indicate or hint relative importance.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention.
The structural representation of the high pressure sensor that Fig. 1 provides for the embodiment of the present invention；The structural representation of inner seal cover and joint in the high pressure sensor that Fig. 2 provides for the embodiment of the present invention；The side view of the high pressure sensor that Fig. 3 provides for the embodiment of the present invention.
As Figure 1-3, the embodiment of the present invention provides high pressure sensor, including: joint 1, pressure sensitive film 2, inner seal cover 3 and external seal cover 4, the top of joint 1 is provided with the pressure sensitive film 2 that is fixedly connected sequentially from inside to outside, first concave station 11 of inner seal cover 3 and external seal cover 4, second concave station 12 and the 3rd concave station 13, inner seal cover 3 top is provided with the first binding post 311, seal closure 4 top is provided with the connector socket 41 for external cord outside, first binding post 311 is connected with pressure sensitive film 2 and connector socket 41 respectively by electric wire, joint 1 is provided with through hole 14, pressure sensitive film 2 is provided with towards through hole 14 and the opening that communicates therewith.
Relative to prior art, the high pressure sensor described in the embodiment of the present invention has the advantage that
High pressure sensor provided by the invention is in use, joint 1 is connected with the container threads holding liquid, by joint 1 bottom tapering portions and threaded formation sealing surface between the corresponding vessel port of installing on container, and installing sealing gasket improves the sealing of system between sealing surface.
Owing to the vertical central shaft of joint 1 being provided with through hole 14, and pressure sensitive film 2 has the opening towards through hole 14, and the opening of pressure sensitive film 2 is relatively large, can cover that the upper surface of whole through hole 14 is fixing with joint 1 to be connected, form airtight connectivity structure between pressure sensitive film 2 and through hole 14, make the gaseous state of entrance through hole 14 or liquid liquid all cannot be diffused into outside connectivity structure.
The built-in function part of high pressure sensor can be played a very good protection by external seal cover 4 so that it is from damage, and butted line socket 41 is played a supporting role simultaneously.
Liquid to be measured enters the through hole 14 of joint 1, pressure sensitive film 2 produces compressing and causes that pressure sensitive film 2 produces deformation, and deformation is converted into the signal of telecommunication by electric wire via reaching display instrument or controller after the first binding post 311 and connector socket 41.
The present invention adopts double sealing structure, being welded and fixed formation the first resealing structure between pressure sensitive film 2 and the first concave station 11 of joint 1, being welded and fixed between inner seal cover 3 and insulator seal contact pin the 31, first binding post 311 and the second concave station 12 of joint 1 forms the second resealing structure.
Therefore the present invention can be used in the pressure monitoring to gases at high pressure, highly pressurised liquid, and is applicable to high pressure poisonous and harmful liquid is carried out pressure monitoring, and operating pressure may be up to 60Mpa.Pressure sensitive film 2 is once be destroyed by high pressure liquid, second resealing structure can play double safeguard function, thus avoiding poisonous and harmful liquid to be diffused in external environment, human body is damaged, it is possible to be greatly improved the security performance in high pressure sensor use procedure.
Preferably, in order to make high pressure sensor can meet the demand that the pressure to High Pressure Hydrogen isotope liquid is monitored, in the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, joint 1, inner seal cover 3 and external seal cover 4 are made by resistant to hydrogen rustless steel.
The joint 1 of high pressure sensor, inner seal cover 3 and external seal cover 4 all adopt resistant to hydrogen stainless steel to make, high pressure sensor main body can be made to have good anti-hydrogen embrittlement performance, so that its except suitable in general high voltage, poisonous and harmful liquid pressure monitoring except, particularly the pressure monitoring of High Pressure Hydrogen isotope liquid is had application advantage and the reliability of uniqueness, and once pressure sensitive film is by after high pressure liquid destruction, hydrogen isotope liquid can be played double safeguard function by the second resealing structure, it is to avoid hydrogen isotope gas is diffused into external environment and sets off an explosion.
In practical application, cause that it produces deformation owing to pressure sensitive film 2 is produced compressing by liquid, in order to make deformation data change into the signal of telecommunication preferably, then reach display instrument or controller by electric wire via the first binding post 311 and connector socket 41, to play the high pressure sensor measurement function to liquid pressure.
In the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, pressure sensitive film 2 top is provided with microcircuit, the first binding post 311 is connected with microcircuit by electric wire.
Microcircuit is plated in the upper surface of pressure sensitive film 2, preferably the deformation data that pressure sensitive film 2 produces can be changed into the signal of telecommunication, first binding post 311 is connected by electric wire with microcircuit and connector socket 41, thus the signal of telecommunication passes through electric wire via reaching display instrument or controller after the first binding post 311 and connector socket 41, and then high pressure sensor achieves the purpose that the pressure to high pressure liquid is monitored preferably.
Wherein, in order to ensure the reliability of insulating properties between the first binding post 311 and inner seal cover 3, it is ensured that the normal use of high pressure sensor, it is to avoid human body is damaged.
In the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, the top of inner seal cover 3 is fixedly connected with insulator seal contact pin 31, the first binding post 311 is arranged in insulator seal contact pin 31.
Excessively connected by insulator seal contact pin 31 between inner seal cover 3 and the first binding post 311, good insulation function can be played between inner seal cover 3 and the first binding post 311, thus ensureing the reliability of insulating properties between inner seal cover 3 and the first binding post 311, and then guarantee that high pressure sensor can normally use, it also avoid owing to high pressure sensor outer surface is charged, operator are caused personal injury.
Specifically, in order to be connected fixing preferably between insulator seal contact pin 31 with the first binding post 311 and inner seal cover 3, and poisonous and hazardous liquid can be played the second weight protective action, it is ensured that the security performance in use procedure of the present invention.
In the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, be welded and fixed by kovar alloy between insulator seal contact pin 31 and the first binding post 311 and inner seal cover 3, insulator seal contact pin 31 is crunch seal sheet.
Kovar alloy can with insulator seal contact pin 31 welding, then will be welded together by kovar alloy between the first binding post 311, inner seal cover 3 and insulator seal contact pin 31 again, pottery is known reasonable insulant, so that forming good insulating properties between the first binding post 311 and inner seal cover 3.
And it is welded and fixed between insulator seal contact pin 31 and the first binding post 311 and inner seal cover 3, liquid can be played good sealing, once pressure sensitive film 2 is by after high pressure liquid destruction, high-pressure gaseous or liquid liquid can be played double safeguard function, in order to avoid poisonous and harmful liquid diffuses out and human body is damaged.
Wherein, in order to make the first binding post 311 can electrically connect preferably with connector socket 41, make the signal of telecommunication can reach display instrument or controller preferably, to complete the high pressure sensor monitoring function to high pressure liquid pressure.
In the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, connector socket 41 lower end is provided with second binding post 411 corresponding with the first binding post 311, the first binding post 311 is connected by electric wire and the second binding post 411.
It is connected by electric wire between first binding post 311 with the second binding post 411, so that electrically connecting preferably between the first binding post 311 and connector socket 41, the signal of telecommunication is reached the second binding post 411 of connector socket 41 by microcircuit by electric wire through the first binding post 311, owing to connector socket 41 is circumscribed with and the electric wire showing that instrument or controller are connected, thus the signal of telecommunication being reached preferably display instrument or controller, and then play the high pressure sensor monitoring function to high-pressure gaseous or the pressure of liquid liquid.
In order to ensure the seal of pressure sensor inside structure, thus when monitoring gaseous state or volatile liquid poisonous and harmful liquid, it is possible to reach to avoid liquid to be diffused into external environment condition, the purpose that human body is damaged.
In the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, pressure sensitive film 2, inner seal cover 3 and external seal cover 4 are welded and fixed with first concave station the 11, second concave station 12 and the 3rd concave station 13 respectively.
Pressure sensitive film 2 is fixed on the first concave station 11 of joint 1, its through hole 14 with joint 1 forms connectivity structure, and inner seal cover 3 is set in outside pressure sensitive film 2, and is welded and fixed with the second concave station 12, external seal cover 4 is set in outside inner seal cover 3, and is welded and fixed with the 3rd concave station 13.
The present invention adopts double sealing structure, being welded and fixed formation the first resealing structure between pressure sensitive film 2 and the first concave station 11 of joint 1, being welded and fixed between inner seal cover 3 and insulator seal contact pin the 31, first binding post 311 and the second concave station 12 of joint 1 forms the second resealing structure.
Therefore the security performance in high pressure sensor use procedure can be greatly improved, it is possible to for the pressure monitoring of gases at high pressure, highly pressurised liquid, it is possible to for the pressure monitoring of high pressure poisonous and harmful liquid.Pressure sensitive film 2 is once be destroyed by high pressure liquid, and the second resealing structure can play double safeguard function, thus avoiding poisonous and harmful liquid to spread, staff is damaged.
And the built-in function part of high pressure sensor can be played a very good protection by external seal cover 4 so that it is from damage, butted line socket 41 plays support and fixation simultaneously.
Specifically, in order to connector socket 41 being fixed on preferably the top of external seal cover 4, it is ensured that the stability electrically connected between the first binding post 311 and connector socket 41, to guarantee that high pressure sensor can play the monitoring function to liquid pressure preferably.
In the high pressure sensor that the embodiment of the present invention provides, as Figure 1-3, connector socket 41 periphery is provided with screw thread, and external seal cover 4 top is provided with opening, and the opening of external seal cover 4 is provided with the screw thread matched with connector socket 41.
By threadeding between connector socket 41 with external seal cover 4 opening, to guarantee the fixing reliability being connected between connector socket 41 with external seal cover 4, avoid in high pressure sensor use procedure, due to connector socket 41 virtual connection, cause being connected instability between the first binding post 311 and connector socket 41, make high pressure sensor that the monitoring numerical value of liquid pressure is inaccurate, cause its problem that cannot normally use.
In order to further ensure that the fastness being connected between connector socket 41 with external seal cover 4, to ensure the normal use of pressure transducer.
In the high pressure sensor that the embodiment of the present invention provides, as it is shown in figure 1, connector socket 41 and external seal cover 4 are connected by screw.
On the basis threadeded between connector socket 41 with external seal cover 4 opening, again four angles of connector socket 41 are fixed by screw further with external seal cover 4, so that it is guaranteed that reliability fixing between connector socket 41 and external seal cover 4, and then ensure the stability electrically connected between the first binding post 311 and connector socket 41, so that pressure transducer normally uses.
In order to make pressure transducer can be connected preferably with the container of liquid to be measured, to ensure that pressure transducer is treated the pressure of flow measurement matter and monitored accurately.
In the high pressure sensor that the embodiment of the present invention provides, as Figure 1-3, the periphery of joint 1 bottom is provided with screw thread.
Thus joint 1 is connected with the container threads holding liquid, by joint 1 bottom tapering portions and threaded formation sealing surface between the corresponding vessel port of installing on container, and installing sealing gasket improves the sealing of system between sealing surface, thus avoiding high pressure, poisonous and harmful liquid to be diffused into external environment and human body is damaged.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a high pressure sensor, it is characterized in that, including: joint, pressure sensitive film, inner seal cover and external seal cover, the top of described joint is provided with the described pressure sensitive film that is fixedly connected sequentially from inside to outside, first concave station of described inner seal cover and described external seal cover, second concave station and the 3rd concave station, described inner seal cover top is provided with the first binding post, described external seal cover top is provided with the connector socket for external cord, described first binding post is connected with described pressure sensitive film and described connector socket respectively by electric wire, described joint is provided with through hole, described pressure sensitive film is provided with towards described through hole and the opening that communicates therewith.
2. high pressure sensor according to claim 1, it is characterised in that: described joint, described inner seal cover and described external seal cover are made by resistant to hydrogen rustless steel.
3. high pressure sensor according to claim 1, it is characterised in that: described pressure sensitive film top is provided with microcircuit, and described first binding post is connected with described microcircuit by electric wire.
4. high pressure sensor according to claim 1, it is characterised in that: the top of described inner seal cover is fixedly connected with insulator seal contact pin, and described first binding post is arranged in described insulator seal contact pin.
5. high pressure sensor according to claim 4, it is characterised in that: being welded and fixed by kovar alloy between described insulator seal contact pin and described first binding post and described inner seal cover, described insulator seal contact pin is crunch seal sheet.
6. high pressure sensor according to claim 1, it is characterised in that: described connector socket lower end is provided with second binding post corresponding with described first binding post, and described first binding post is connected with described second binding post by electric wire.
7. high pressure sensor according to claim 1, it is characterised in that: described pressure sensitive film, described inner seal cover and described external seal cover are welded and fixed with described first concave station, the second concave station and the 3rd concave station respectively.
8. high pressure sensor according to claim 1, it is characterised in that: described connector socket periphery is provided with screw thread, and described external seal cover top is provided with opening, and the opening of described external seal cover is provided with the screw thread matched with described connector socket.
9. high pressure sensor according to claim 8, it is characterised in that: described connector socket and described external seal cover are connected by screw.
10. high pressure sensor according to claim 1, it is characterised in that: the periphery of described joint bottom is provided with screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610390235.5A CN105806553A (en) | 2016-06-02 | 2016-06-02 | High-pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610390235.5A CN105806553A (en) | 2016-06-02 | 2016-06-02 | High-pressure sensor |
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| Publication Number | Publication Date |
|---|---|
| CN105806553A true CN105806553A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610390235.5A Pending CN105806553A (en) | 2016-06-02 | 2016-06-02 | High-pressure sensor |
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| CN (1) | CN105806553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118938085A (en) * | 2024-10-11 | 2024-11-12 | 南通普奥电子科技有限公司 | A high-safety high-frequency transformer performance test equipment |
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| CN1914494A (en) * | 2003-12-03 | 2007-02-14 | 霍尼韦尔国际公司 | Isolated pressure transducer |
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| CN103712729A (en) * | 2013-12-18 | 2014-04-09 | 中国电子科技集团公司第四十八研究所 | Non-welding-sealed pressure sensor |
| CN204286670U (en) * | 2014-12-25 | 2015-04-22 | 西安航天远征流体控制股份有限公司 | A kind of high temperature resistant miniaturized pressure sensor |
| CN205785658U (en) * | 2016-06-02 | 2016-12-07 | 中国工程物理研究院材料研究所 | High pressure sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03214761A (en) * | 1990-01-19 | 1991-09-19 | Nec Kansai Ltd | Hermetically sealed terminal and manufacture thereof |
| CN1914494A (en) * | 2003-12-03 | 2007-02-14 | 霍尼韦尔国际公司 | Isolated pressure transducer |
| CN1975358A (en) * | 2006-12-14 | 2007-06-06 | 中国航天科技集团公司第六研究院第十一研究所 | Low-temperature film pressure sensor and producing method thereof |
| CN202382900U (en) * | 2011-11-17 | 2012-08-15 | 中国电子科技集团公司第四十八研究所 | Absolute pressure packaging structure for strain pressure transducer and strain pressure transducer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118938085A (en) * | 2024-10-11 | 2024-11-12 | 南通普奥电子科技有限公司 | A high-safety high-frequency transformer performance test equipment |
| CN118938085B (en) * | 2024-10-11 | 2025-01-24 | 南通普奥电子科技有限公司 | A high-safety high-frequency transformer performance test equipment |
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Application publication date: 20160727 |