CN209247226U - A kind of pressure transmitter - Google Patents
A kind of pressure transmitter Download PDFInfo
- Publication number
- CN209247226U CN209247226U CN201821342786.5U CN201821342786U CN209247226U CN 209247226 U CN209247226 U CN 209247226U CN 201821342786 U CN201821342786 U CN 201821342786U CN 209247226 U CN209247226 U CN 209247226U
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- CN
- China
- Prior art keywords
- pressure
- sensor
- pressure transmitter
- sealing element
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model belongs to automatic field, in particular to a kind of pressure transmitter.Including shell, the housing tip is equipped with sealing element, is respectively equipped with display board, power supply, Signal acquiring and processing plate in the sealing element from top to bottom, and the lower part of the housing is equipped with installation part, and the bottom of the installation part is equipped with sensor.Compared with prior art, the utility model has following advantageous effects: small in size, light-weight, installation and debugging are extremely convenient, pressure signal measurement and temperature signal measurement are integrated on transmitter, and use micro power consumption wireless communication module, it does not need wiring, installs more quick, conveniently, safely, separately there is matched wireless converting equipment, many pressure signals, temperature signal can be converted to Modbus standard signal and transmitted by Ethernet or serial ports, TT&C system can be easily accessed.
Description
Technical field
The utility model belongs to automatic field, in particular to a kind of pressure transmitter.
Background technique
Pressure transmitter is a kind of sensor the most commonly used in industrial practice, is widely used in various industrial automatic control rings
Border, be related to water conservancy and hydropower, railway traffic, intelligent building, production automatic control, aerospace, military project, petrochemical industry, oil well, electric power, ship,
Numerous industries such as lathe, pipeline.Pressure transmitter has electrodynamic type and pneumatic type two major classes.DYN dynamic unified output signal is 0
The DC signals such as~10mA, 4~20mA or 1~5V.The unified output signal of pneumatic type is the gas pressure of 20~100Pa.
Pressure transmitter by different transfer principles can be divided into power (torque) balanced type, condenser type, inductance type, strain-type and
Frequency type etc..Pressure signal is passed to electronic equipment by the main function of pressure transmitter, and then in Computer display pressure.It is former
Reason be substantially: by the mechanical signal of this pressure of hydraulic pressure be transformed into electronic signal pressure and voltage as electric current (4-20mA) or
Size of current is linear, usually proportional relation.So the voltage or electric current of transmitter output increase with pressure and are increased
Thus the relational expression of a pressure and voltage or electric current is obtained.Two kinds of pressure of the measured medium of pressure transmitter are passed through high and low
Two pressure chambers, low pressure chamber pressure use atmospheric pressure or vacuum, act on the two sides isolation diaphragm of δ first (i.e. sensing element), lead to
The filling liquid crossed in spacer and element is transmitted to measuring diaphragm two sides.Pressure transmitter is by measuring diaphragm and two sides insulating trip
On electrode respectively form a capacitor.When pressure at both sides is inconsistent, measuring diaphragm is caused to generate displacement, displacement and pressure
Power difference is directly proportional, therefore two sides capacitance just differs, and passes through oscillation and demodulating link.
The development of pressure transmitter substantially experienced four-stage: (1) early stage pressure transmitter is worked using big displacement formula
Principle, such as mercury float-type difference gauge and bellows-type differential pressure transmitter, these transmitter's precisions are low and heavy.(2) 20 centuries 50
The force balance type differential pressure transmitter that age has precision slightly higher, but feedback force is small, and structure is complicated, reliability, stability and antivibration
Property is poor.(3) mid-term the 1970s, with the appearance of new process, new material, new technology, especially electronic technology
It grows rapidly, compact, the simple displacement-type transmitter of structure occurs.(4) science and technology the 1990s is grown rapidly,
Transmitter measurement accuracy improves and gradually to intelligent development, and digital data transmission is more advantageous to data acquisition, occurs expanding
Dissipate the different types such as silicon piezoresistance type transmitter, capacitance transducer, difference induction formula transmitter and ceramic capacitor-type transmitter.
Existing pressure transmitter is generally only equipped with pressure sensor, has a single function, and not being able to satisfy work many times needs
It wants.
Utility model content
For overcome the deficiencies in the prior art, the utility model is quasi- provides a kind of pressure transmitter, and pressure signal is measured
It is integrated on transmitter with temperature signal measurement, and uses micro power consumption wireless communication module, do not need wiring, installed more fast
It is prompt, conveniently, safely, separately there is matched wireless converting equipment, many pressure signals, temperature signal can be converted to Modbus standard
Signal is simultaneously transmitted by Ethernet or serial ports, and TT&C system can be easily accessed.
The technical solution of the utility model are as follows: a kind of pressure transmitter, including shell 1,1 top of shell are equipped with sealing
Part 2, is respectively equipped with display board 3, power supply 4, Signal acquiring and processing plate 5 in the sealing element 2 from top to bottom, under the shell 1
Portion is equipped with installation part 6, and the bottom of the installation part 6 is equipped with sensor 7.
Further, the sealing element 2 is safety cover type locker.
Further, the installation part 6 is screw-type.
Further, the sensor 7 is pressure sensor.
Further, the sensor 7 is temperature sensor.
Further, the sensor 7 is pressure sensor and temperature sensor.
Using modular designs, circuit part is divided into Signal acquiring and processing plate, display and key adjustment plate and Zigbee
Transmission module three parts composition, Signal acquiring and processing plate, as central processing unit, are used using 32 super low power consuming single chip processors
Measurement and excitation chip of 24 AD conversion chips as sensor are guaranteeing product using precision voltage source managing chip
Guarantee low power operation under the premise of measurement accuracy.Product display board uses LCD liquid crystal display, keeps display more intuitive, clear,
Show that content is more abundant.Zigbee wireless transport module communication efficiency height is less prone to mistake.Shell uses Stainless Steel Shell.
Compared with prior art, the utility model has following advantageous effects:
(1) have the function of gamut temperature-compensating and nonlinear compensation.Any environment temperature in compensation temperature range
Lower use, can guarantee the measurement accuracy of transmitter；
(2) have to fault self-diagnosis functions such as supply voltage, sensor, pressure and temp calibrating parameters and CPU；
(3) a variety of application software hardware supporteds, data transfer solution, Client application software and hardware are supported；
(4) small in size, light-weight, installation and debugging are extremely convenient.
Detailed description of the invention
Fig. 1: the structural schematic diagram of the utility model；
Fig. 2: the principles of the present invention block diagram.
Specific embodiment
Embodiment one
A kind of pressure transmitter, including shell 1,1 top of shell are equipped with sealing element 2, in the sealing element 2 on to
Under be respectively equipped with display board 3, power supply 4, Signal acquiring and processing plate 5,1 lower part of shell is equipped with installation part 6, the installation part
6 bottom is equipped with sensor 7.
Using modular designs, circuit part is divided into Signal acquiring and processing plate, display and key adjustment plate and Zigbee
Transmission module three parts composition, Signal acquiring and processing plate, as central processing unit, are used using 32 super low power consuming single chip processors
Measurement and excitation chip of 24 AD conversion chips as sensor are guaranteeing product using precision voltage source managing chip
Guarantee low power operation under the premise of measurement accuracy.Product display board uses LCD liquid crystal display, keeps display more intuitive, clear,
Show that content is more abundant.The F8913D module that Zigbee wireless transport module uses Xiamen four to believe, product is mature and stable, communication
It is high-efficient to be less prone to mistake.Product uses the diffusion silicon pressure sensor core of day wawter bloom ruler of heaven department, constant current source forcing, measurement
Precision is high, be quick on the draw, stability is good.Shell uses Stainless Steel Shell, and pressure sensor and temperature sensor collection are together in one
In shell.
Embodiment two
Other are as in the first embodiment, the difference is that alarm setting built in the shell 1, can need to change report according to scene
Alert parameter.
Embodiment three
Other are with embodiment two, the difference is that the shell 1 is equipped with panel alarm lamp.
Claims (6)
1. a kind of pressure transmitter, it is characterised in that: including shell (1), shell (1) top is equipped with sealing element (2), described
It is respectively equipped with display board (3), power supply (4), Signal acquiring and processing plate (5), the sealing element from top to bottom in sealing element (2)
(2) modularized design is used in, it is wireless that circuit part specifically includes Signal acquiring and processing plate (5), display board (3) and ZigBee
Transmission module, shell (1) lower part are equipped with installation part (6), and the bottom of the installation part (6) is equipped with sensor (7).
2. a kind of pressure transmitter according to claim 1, it is characterised in that: the sealing element (2) is safety cover type locker.
3. a kind of pressure transmitter according to claim 1, it is characterised in that: the installation part (6) is screw-type.
4. a kind of pressure transmitter according to claim 1, it is characterised in that: the sensor (7) is pressure sensor.
5. a kind of pressure transmitter according to claim 1, it is characterised in that: the sensor (7) is temperature sensor.
6. a kind of pressure transmitter according to claim 1, it is characterised in that: the sensor (7) is pressure sensor
And temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821342786.5U CN209247226U (en) | 2018-08-21 | 2018-08-21 | A kind of pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821342786.5U CN209247226U (en) | 2018-08-21 | 2018-08-21 | A kind of pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247226U true CN209247226U (en) | 2019-08-13 |
Family
ID=67517121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821342786.5U Expired - Fee Related CN209247226U (en) | 2018-08-21 | 2018-08-21 | A kind of pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247226U (en) |
-
2018
- 2018-08-21 CN CN201821342786.5U patent/CN209247226U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20200821 |