CN212133961U - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
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- CN212133961U CN212133961U CN202020754718.0U CN202020754718U CN212133961U CN 212133961 U CN212133961 U CN 212133961U CN 202020754718 U CN202020754718 U CN 202020754718U CN 212133961 U CN212133961 U CN 212133961U
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- pressure
- pressure transmitter
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- temperature
- sensor
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Abstract
The utility model discloses a pressure transmitter, which relates to the technical field of pressure transmitters, and comprises a pressure transmitter shell, wherein the lower end of the pressure transmitter shell is provided with a pressure sensor, a controller, a constant current source and a temperature compensation circuit are arranged in the pressure transmitter shell, the side wall of the pressure transmitter shell is provided with a display screen, a reset button, a wiring port and a temperature sensor, the top of the pressure transmitter shell is provided with an alarm, the controller is respectively electrically connected with the display screen, the reset button, the wiring port and the alarm, the temperature sensor is connected with the controller through the temperature compensation circuit, the constant current source is electrically connected with the controller through the pressure sensor, and a plurality of radiating fins are arranged on the side wall of the pressure sensor at intervals; the utility model discloses can improve measurement accuracy, reduce the influence of temperature to pressure measurement, increase of service life.
Description
Technical Field
The utility model relates to a pressure transmitter technical field specifically is a pressure transmitter.
Background
The pressure transmitter is a sensor which is most commonly used in industrial practice and is widely applied to various industrial automatic control environments, and relates to the industries of water conservancy and hydropower, railway traffic, intelligent building, production automatic control, aerospace, war industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like, and the pressure transmitter has two major types of electric and pneumatic types. The electrodynamic type unified output signal is a direct current signal of 0-10 mA, 4-20 mA or 1-5V, etc. The pneumatic unified output signal is gas pressure of 20-100 Pa.
The pressure transmitter in the prior art is obviously influenced by the internal and external temperature, and the working point and the performance can drift, thereby influencing the measurement precision.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a pressure transmitter.
The utility model aims at realizing through the following technical scheme: the utility model provides a pressure transmitter, includes pressure transmitter casing 1, 1 lower extreme of pressure transmitter casing is equipped with pressure sensor 2, be equipped with controller 3, constant current source 4, temperature compensating circuit 5 in the pressure transmitter casing 1, be equipped with display screen 6, reset button 7, wiring port 8, temperature sensor 9 on the lateral wall of pressure transmitter casing 1, the top of pressure transmitter casing 1 is equipped with alarm 10, controller 3 respectively with display screen 6, reset button 7, wiring port 8, alarm 10 electric connection, temperature sensor 9 passes through temperature compensating circuit 5 with controller 3 connects, constant current source 4 passes through pressure sensor 2 with 3 electric connection of controller, top-down interval is equipped with a plurality of fin 201 on pressure sensor 2's the lateral wall.
In a preferred embodiment, the pressure sensor 2 is a diffused silicon pressure sensor.
In a preferred embodiment, the bottom end of the pressure sensor 2 is provided with an external thread 202, and the pressure sensor 2 is provided with a clamping surface 203 between the external thread and the heat sink 201.
In a preferred embodiment, the alarm 10 is an audible and visual alarm.
The utility model has the advantages that:
in the utility model, the constant current source is used for providing stable supply current for the pressure sensor, and the influence of temperature on the detection pressure can be reduced; the radiating fins can be effectively used for radiating heat of the pressure sensor, so that damage to electric elements inside a shell of the pressure transmitter under the condition of high temperature and high pressure is avoided, meanwhile, the influence of temperature on measurement precision is weakened, and the service life is ensured; the temperature sensor is used for measuring the external temperature, sends a temperature signal to the controller through the temperature compensation circuit, synthesizes the influence of the external temperature on the pressure of the fluid to be detected through detecting the external temperature, and can correct the pressure measurement result and reduce the measurement error.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is an external structural view of a pressure transmitter according to an embodiment of the present invention;
fig. 2 is a system diagram of a pressure transmitter according to an embodiment of the present invention.
In the figure:
1. a pressure transmitter housing; 2. a pressure sensor; 201. a heat sink; 202. an external thread; 203. a clamping surface; 3. a controller; 4. a constant current source; 5. a temperature compensation circuit; 6. a display screen; 7. a reset button; 8. a wiring port; 9. a temperature sensor; 10. an alarm.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The invention will be further described with reference to the drawings and specific examples.
As shown in fig. 1-2, an embodiment of the present invention provides a pressure transmitter, which includes a pressure transmitter housing 1, wherein a pressure sensor 2 is disposed at a lower end of the pressure transmitter housing 1, a controller 3, a constant current source 4 and a temperature compensation circuit 5 are disposed in the pressure transmitter housing 1, a display screen 6, a reset button 7, a wiring port 8 and a temperature sensor 9 are disposed on a side wall of the pressure transmitter housing 1, an alarm 10 is disposed at a top of the pressure transmitter housing 1, and the alarm 10 can adopt an audible and visual alarm; the controller 3 is respectively electrically connected with the display screen 6, the reset button 7, the wiring port 8 and the alarm 10, the temperature sensor 9 is connected with the controller 3 through the temperature compensation circuit 5, the constant current source 4 is electrically connected with the controller 3 through the pressure sensor 2, and a plurality of radiating fins 201 are arranged on the side wall of the pressure sensor 2 at intervals from top to bottom;
in the embodiment of the present invention, the controller 3 may adopt a single chip microcomputer, the pressure sensor 2 adopts a diffused silicon pressure sensor for collecting pressure signals and sending the pressure signals to the controller 3, and the controller 3 is used for converting the pressure signals into current signals meeting requirements and sending the current signals to an external system, which is the prior art and is not described herein again; meanwhile, the controller 3 sends the pressure signal to the display screen 6 for displaying, when the detected pressure signal exceeds a set value, the alarm 10 acts to send out an alarm signal, the reset button 7 is used for resetting, and the wiring port 8 is used for receiving and sending signals and is used for supplying power to the electrical element of the utility model, which is the prior art and is not repeated herein; the constant current source 4 is used for providing stable power supply current for the pressure sensor 2, and can reduce the influence of temperature on detection pressure; the radiating fins 201 can be effectively used for radiating heat of the pressure sensor 2, so that damage to electric elements inside the pressure transmitter shell 1 under the condition of high temperature and high pressure is avoided, meanwhile, the influence of temperature on measurement precision is weakened, and the service life is ensured; the temperature sensor 1 is used for measuring the external temperature, sends a temperature signal to the controller 3 through the temperature compensation circuit 5, synthesizes the influence of the external temperature on the pressure of the fluid to be detected by detecting the external temperature, and can correct the pressure measurement result and reduce the measurement error.
In a specific embodiment, the bottom end of the pressure sensor 2 is provided with an external thread 202, and the pressure sensor 2 is provided with a clamping surface 203 between the external thread 202 and the heat sink 201; external screw thread 202 is used for with the utility model discloses threaded connection is on treating the installed part, and clamping face 203 is used for using tools such as spanner, pliers centre gripping installation or dismantlement.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (4)
1. A pressure transmitter, characterized by: the temperature monitoring device comprises a pressure transmitter shell (1), wherein a pressure sensor (2) is arranged at the lower end of the pressure transmitter shell (1), a controller (3), a constant current source (4) and a temperature compensation circuit (5) are arranged in the pressure transmitter shell (1), a display screen (6), a reset button (7), a wiring port (8) and a temperature sensor (9) are arranged on the side wall of the pressure transmitter shell (1), an alarm (10) is arranged at the top of the pressure transmitter shell (1), the controller (3) is respectively electrically connected with the display screen (6), the reset button (7), the wiring port (8) and the alarm (10), the temperature sensor (9) is connected with the controller (3) through the temperature compensation circuit (5), the constant current source (4) is connected with the pressure sensor (2) and the controller (3) through the temperature compensation circuit (5), a plurality of radiating fins (201) are arranged on the side wall of the pressure sensor (2) from top to bottom at intervals.
2. A pressure transmitter as claimed in claim 1, wherein: the pressure sensor (2) is a diffused silicon pressure sensor.
3. A pressure transmitter as claimed in claim 2, wherein: the bottom end of the pressure sensor (2) is provided with an external thread (202), and the pressure sensor (2) is provided with a clamping surface (203) which is positioned between the external thread and the radiating fins (201).
4. A pressure transmitter as claimed in claim 1, wherein: the alarm (10) is an audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020754718.0U CN212133961U (en) | 2020-05-09 | 2020-05-09 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020754718.0U CN212133961U (en) | 2020-05-09 | 2020-05-09 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212133961U true CN212133961U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020754718.0U Active CN212133961U (en) | 2020-05-09 | 2020-05-09 | Pressure transmitter |
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| CN (1) | CN212133961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507243A (en) * | 2022-10-12 | 2022-12-23 | 南京晨光东螺波纹管有限公司 | Online displacement corrugated pipe compensator applied to high-temperature occasions |
-
2020
- 2020-05-09 CN CN202020754718.0U patent/CN212133961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507243A (en) * | 2022-10-12 | 2022-12-23 | 南京晨光东螺波纹管有限公司 | Online displacement corrugated pipe compensator applied to high-temperature occasions |
| CN115507243B (en) * | 2022-10-12 | 2023-08-18 | 南京晨光东螺波纹管有限公司 | Online displacement corrugated pipe compensator applied to high-temperature occasion |
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