CN206146570U - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
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- CN206146570U CN206146570U CN201621081843.XU CN201621081843U CN206146570U CN 206146570 U CN206146570 U CN 206146570U CN 201621081843 U CN201621081843 U CN 201621081843U CN 206146570 U CN206146570 U CN 206146570U
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Abstract
The utility model discloses a pressure transmitter belongs to instrument and meter technical field, including main control unit IC5, pressure sensor unit, signal transmission unit, electrical unit, temperature compensating unit, low -power consumption detecting element, ground wire GND and ground wire AGND, high anti jamming ability and low -power consumption function when having realized transmission signal and having gathered the signal are applicable to the strong electromagnetic interference environment of unmanned post.
Description
Technical field
This utility model belongs to technology of instrument and meter field.
Background technology
Transmitter is most important field instrument in industrial stokehold, can be used for pressure, differential pressure, temperature, liquid level, flow
Deng the measurement of many kinds of parameters.It is detected to process variable by sensor, becomes digital signal after conversion, or directly
Information is exchanged with control room by digital communication mode.With the continuous improvement of industrial process control system automatization level, work
The maximization of skill flow process, complicate and computer controls application, to becoming performance into device, function, intelligence degree, communication rule
Journey, certainty of measurement, range ratio, long-time stability, various impact figureofmerits etc. are proposed new requirements at the higher level.Transmitter it is excellent
It is bad, it is directly connected to stability and the safety of whole control system.
Utility model content
The purpose of this utility model is to provide a kind of pressure transmitter, and height when realizing transmission signal and collection signal resists
Interference performance and low-power consumption function, it is adaptable to the strong electromagnetic interference environment of unattended duty.
For achieving the above object, this utility model is employed the following technical solutions：
A kind of pressure transmitter, including master controller IC5, pressure sensor unit, signal transmission unit, power subsystem,
Temperature compensation unit, low-power consumption detector unit, ground wire GND and ground wire AGND；
The 22 feet connection ground wire GND of master controller IC5, the 3-8 feet of master controller IC5 are all connected with ground wire AGND；
Pressure sensor unit includes dual operational amplifier IC3, pressure transducer CGQ1, audion A2, audion A3, survey
Try line terminals CSJ1, diode D12, resistance R3, resistance R15, resistance R18, resistance R7, resistance R10, resistance QR23, resistance
WR1, resistance WR2, electric capacity C17, electric capacity C10, electric capacity C18 and electric capacity C19, the positive pole connection ground wire AGND of diode D12, two poles
The negative pole of pipe D12 connects 8 feet of dual operational amplifier IC3 by resistance R3, and electric capacity C17 and diode D12 is connected in one in parallel
Rise, the negative pole of diode D12 also connects 3 feet of dual operational amplifier IC3 by resistance WR1, the positive pole of diode D12 also passes through
Resistance WR2 connects 3 feet of dual operational amplifier IC3, and 2 feet of dual operational amplifier IC3 connect 3 feet of pressure transducer CGQ1,
1 foot of dual operational amplifier IC3 connects 1 foot of pressure transducer CGQ1, and 4 feet of dual operational amplifier IC3 connect ground wire AGND,
The colelctor electrode of the 8 foot connecting triode A2 of dual operational amplifier IC3, the colelctor electrode of the base stage connecting triode A3 of audion A2,
The emitter stage connection ground wire AGND of audion A3, the base stage of audion A3 is by resistance QR23 connecting test binding post CSJ1's
2 feet, 1 foot of the emitter stage connecting test terminal CSJ1 of audion A2, the base stage of audion A3 connect ground wire by resistance R10
3 feet of AGND, calibrating terminal CSJ1 connect 20 feet of master controller IC5, connect between 2 feet and 4 feet of pressure transducer CGQ1
There is electric capacity C10,2 feet of pressure transducer CGQ1 connect 1 foot of master controller IC5 by resistance R15, pressure transducer CGQ1's
4 feet connect 2 feet of master controller IC5 by resistance R15, and 1 foot of master controller IC5 also connects ground wire AGND by electric capacity C18,
2 feet of master controller IC5 also connect ground wire AGND by C19；
Signal transmission unit includes 485 chip U5, resistance R33, resistance R34, resistance R35, resistance R36, TVS protector
2 feet and 3 feet of D8, TVS protector D16 and TVS protector D17,485 chip U5 connect master controller IC5 by resistance R33
25 feet, 1 foot of 485 chip U5 connects 23 feet of master controller IC5, the 24 of the 4 feet connection master controller IC5 of 485 chip U5
Foot, the 5 feet connection ground wire GND of 485 chip U5,7 feet of 485 chip U5 connect 1 foot of TVS protector D8 by resistance R34,
6 feet of 485 chip U5 connect 2 feet of TVS protector D8 by resistance R35, are connected between 1 foot and 2 feet of TVS protector D8
1 foot of resistance R36, TVS protector D8 connects 1 foot of TVS protector D17, the 2 feet connection TVS protectors of TVS protector D8
1 foot of D16,2 feet of 2 feet and TVS protector D16 of TVS protector D17 are all connected with ground wire GND, 1 foot of TVS protector D8 and
2 feet constitute a kind of signal output part of pressure transmitter；
Power subsystem includes voltage stabilizing chip IC1, voltage stabilizing chip IC11, battery BT1, electric capacity C7, electric capacity C8, electric capacity C9, electricity
Hold C3, electric capacity C6, electric capacity C2, electric capacity C1, resistance R8 and magnetic bead R27,1 foot of voltage stabilizing chip IC1 connects the positive pole of battery BT1,
The positive pole of battery BT1 is also connected with the emitter stage of audion A2, the negative pole connection ground wire GND of battery BT1,2 feet of voltage stabilizing chip IC1
Electric capacity C2 and electric capacity C1 connection ground wire GND that the positive pole of connection ground wire GND, battery BT1 is also linked together in parallel, voltage stabilizing
1 foot and 3 feet of chip IC 1 links together, and 5 feet of voltage stabilizing chip IC1 connect 2 feet of resistance R8, and 1 foot of resistance R8 is by simultaneously
The electric capacity C7 being linked togather and electric capacity C8 connection ground wire GND, the 1 foot out-put supply VCC of resistance R8,2 feet of resistance R8 also pass through
Electric capacity C9 connects ground wire GND, and 1 foot of voltage stabilizing chip IC1 is also connected with 1 foot of voltage stabilizing chip IC11, and 3 feet of voltage stabilizing chip IC11 connect
Connect 19 feet of master controller IC5,5 feet of voltage stabilizing chip IC11 electric capacity C3 in parallel together and electric capacity C6 connection ground wires,
5 foot out-put supply VCC485 of voltage stabilizing chip IC11, are connected with magnetic bead R27 between ground wire GND and ground wire AGND；
Temperature compensation unit includes critesistor RT, potentiometer R5, resistance RS, resistance R1, electric capacity C11, resistance R28 and electricity
Resistance R29,1 foot of 1 foot of critesistor RT, 1 foot of resistance RS and resistance R1 connect ground wire GND, temperature-sensitive electricity by electric capacity C11
2 feet of resistance RT connect 28 feet of master controller IC5 by potentiometer R5, and 2 feet of resistance RS connect 27 feet of master controller IC5,
2 feet of resistance R1 connect 13 feet of master controller IC5, and 1 foot of resistance R28 connects 1 foot of resistance R8, and 2 feet of resistance R28 pass through
Resistance R29 connects ground wire GND, and 2 feet of resistance R28 are also connected with 30 feet of master controller IC5, and 1 foot of resistance R30 passes through resistance R4
The positive pole of connection battery BT1,2 feet of resistance R30 connect 29 feet of master controller IC5, and 2 feet of resistance R30 are connected by resistance R31
Earth lead GND.
Model C8051F350 of the master controller；Model LM358 of the dual operational amplifier IC3.
Model XJC-Y04 of the pressure transducer CGQ1.
Model MAX3485ESA of the 485 chip U5.
The model of TVS protectors D8, TVS protector D16 and TVS protector D17 is TVS-SMD-BAV99/
SOT_0。
The model of voltage stabilizing chip IC1 and voltage stabilizing chip IC11 is S818；The model of the critesistor RT
PT100。
Model LZ1RM-3.5 of the test binding post CSJ1.
A kind of pressure transmitter described in the utility model, is designed by Constant Current-Source Design and dual power supply, realizes transmission
High anti-jamming capacity and low-power consumption function when signal and collection signal, it is adaptable to the strong electromagnetic interference environment of unattended duty.
Description of the drawings
Fig. 1 is the schematic diagram of master controller IC5 of the present utility model；
Fig. 2 is power subsystem schematic diagram of the present utility model；
Fig. 3 is signal transmission unit schematic diagram of the present utility model；
Fig. 4 is temperature compensation unit of the present utility model and low-power consumption detector unit schematic diagram；
Fig. 5 is pressure sensor unit schematic diagram of the present utility model.
Specific embodiment
A kind of pressure transmitter as Figure 1-5, including master controller IC5, pressure sensor unit, signal transmission list
Unit, power subsystem, temperature compensation unit, low-power consumption detector unit, ground wire GND and ground wire AGND；
The 22 feet connection ground wire GND of master controller IC5, the 3-8 feet of master controller IC5 are all connected with ground wire AGND；
Pressure sensor unit includes dual operational amplifier IC3, pressure transducer CGQ1, audion A2, audion A3, survey
Try line terminals CSJ1, diode D12, resistance R3, resistance R15, resistance R18, resistance R7, resistance R10, resistance QR23, resistance
WR1, resistance WR2, electric capacity C17, electric capacity C10, electric capacity C18 and electric capacity C19, the positive pole connection ground wire AGND of diode D12, two poles
The negative pole of pipe D12 connects 8 feet of dual operational amplifier IC3 by resistance R3, and electric capacity C17 and diode D12 is connected in one in parallel
Rise, the negative pole of diode D12 also connects 3 feet of dual operational amplifier IC3 by resistance WR1, the positive pole of diode D12 also passes through
Resistance WR2 connects 3 feet of dual operational amplifier IC3, and 2 feet of dual operational amplifier IC3 connect 3 feet of pressure transducer CGQ1,
1 foot of dual operational amplifier IC3 connects 1 foot of pressure transducer CGQ1, and 4 feet of dual operational amplifier IC3 connect ground wire AGND,
The colelctor electrode of the 8 foot connecting triode A2 of dual operational amplifier IC3, the colelctor electrode of the base stage connecting triode A3 of audion A2,
The emitter stage connection ground wire AGND of audion A3, the base stage of audion A3 is by resistance QR23 connecting test binding post CSJ1's
2 feet, 1 foot of the emitter stage connecting test terminal CSJ1 of audion A2, the base stage of audion A3 connect ground wire by resistance R10
3 feet of AGND, calibrating terminal CSJ1 connect 20 feet of master controller IC5, connect between 2 feet and 4 feet of pressure transducer CGQ1
There is electric capacity C10,2 feet of pressure transducer CGQ1 connect 1 foot of master controller IC5 by resistance R15, pressure transducer CGQ1's
4 feet connect 2 feet of master controller IC5 by resistance R15, and 1 foot of master controller IC5 also connects ground wire AGND by electric capacity C18,
2 feet of master controller IC5 also connect ground wire AGND by C19；
Signal transmission unit includes 485 chip U5, resistance R33, resistance R34, resistance R35, resistance R36, TVS protector
2 feet and 3 feet of D8, TVS protector D16 and TVS protector D17,485 chip U5 connect master controller IC5 by resistance R33
25 feet, 1 foot of 485 chip U5 connects 23 feet of master controller IC5, the 24 of the 4 feet connection master controller IC5 of 485 chip U5
Foot, the 5 feet connection ground wire GND of 485 chip U5,7 feet of 485 chip U5 connect 1 foot of TVS protector D8 by resistance R34,
6 feet of 485 chip U5 connect 2 feet of TVS protector D8 by resistance R35, are connected between 1 foot and 2 feet of TVS protector D8
1 foot of resistance R36, TVS protector D8 connects 1 foot of TVS protector D17, the 2 feet connection TVS protectors of TVS protector D8
1 foot of D16,2 feet of 2 feet and TVS protector D16 of TVS protector D17 are all connected with ground wire GND, 1 foot of TVS protector D8 and
2 feet constitute a kind of signal output part of pressure transmitter；
Power subsystem includes voltage stabilizing chip IC1, voltage stabilizing chip IC11, battery BT1, electric capacity C7, electric capacity C8, electric capacity C9, electricity
Hold C3, electric capacity C6, electric capacity C2, electric capacity C1, resistance R8 and magnetic bead R27,1 foot of voltage stabilizing chip IC1 connects the positive pole of battery BT1,
The positive pole of battery BT1 is also connected with the emitter stage of audion A2, the negative pole connection ground wire GND of battery BT1,2 feet of voltage stabilizing chip IC1
Electric capacity C2 and electric capacity C1 connection ground wire GND that the positive pole of connection ground wire GND, battery BT1 is also linked together in parallel, voltage stabilizing
1 foot and 3 feet of chip IC 1 links together, and 5 feet of voltage stabilizing chip IC1 connect 2 feet of resistance R8, and 1 foot of resistance R8 is by simultaneously
The electric capacity C7 being linked togather and electric capacity C8 connection ground wire GND, the 1 foot out-put supply VCC of resistance R8,2 feet of resistance R8 also pass through
Electric capacity C9 connects ground wire GND, and 1 foot of voltage stabilizing chip IC1 is also connected with 1 foot of voltage stabilizing chip IC11, and 3 feet of voltage stabilizing chip IC11 connect
Connect 19 feet of master controller IC5,5 feet of voltage stabilizing chip IC11 electric capacity C3 in parallel together and electric capacity C6 connection ground wires,
5 foot out-put supply VCC485 of voltage stabilizing chip IC11, are connected with magnetic bead R27 between ground wire GND and ground wire AGND；
Temperature compensation unit includes critesistor RT, potentiometer R5, resistance RS, resistance R1, electric capacity C11, resistance R28 and electricity
Resistance R29,1 foot of 1 foot of critesistor RT, 1 foot of resistance RS and resistance R1 connect ground wire GND, temperature-sensitive electricity by electric capacity C11
2 feet of resistance RT connect 28 feet of master controller IC5 by potentiometer R5, and 2 feet of resistance RS connect 27 feet of master controller IC5,
2 feet of resistance R1 connect 13 feet of master controller IC5, and 1 foot of resistance R28 connects 1 foot of resistance R8, and 2 feet of resistance R28 pass through
Resistance R29 connects ground wire GND, and 2 feet of resistance R28 are also connected with 30 feet of master controller IC5, and 1 foot of resistance R30 passes through resistance R4
The positive pole of connection battery BT1,2 feet of resistance R30 connect 29 feet of master controller IC5, and 2 feet of resistance R30 are connected by resistance R31
Earth lead GND.
Model C8051F350 of the master controller；Model LM358 of the dual operational amplifier IC3.
Model XJC-Y04 of the pressure transducer CGQ1.
Model MAX3485ESA of the 485 chip U5.
The model of TVS protectors D8, TVS protector D16 and TVS protector D17 is TVS-SMD-BAV99/
SOT_0。
The model of voltage stabilizing chip IC1 and voltage stabilizing chip IC11 is S818；The model of the critesistor RT
PT100。
Model LZ1RM-3.5 of the test binding post CSJ1.
During work, dual operational amplifier IC3 and its peripheral circuit provide constant current source power supply to pressure transducer CGQ1, it is ensured that
The steady operation of pressure transducer CGQ1, pressure transducer CGQ1 send pressure signal to master controller IC5, master controller
IC5 is processed to pressure signal, and sends out digital pressure signal by 485 chip U5；TVS protector D8, TVS protectors
D16 and TVS protectors D17 carries out surge protection to 485 buses, it is ensured that described one when 485 chip U5 send out digital signal
Plant the transmission data of pressure transmitter effective and safe in the case of strong electromagnetic；Calibrating terminal CSJ1 can be by pressure transducer
Unit is individually isolated out can individually to be debugged to pressure sensor unit when production, convenient to produce；This practicality
It is new to adopt three power supply power-supply service schemes to be powered, i.e.,：Voltage stabilizing chip IC1 and voltage stabilizing chip IC11, voltage stabilizing chip IC11
Individually 485 chip U5 are powered, voltage stabilizing chip IC1 is powered to main control chip IC5 and temperature compensation unit, and pressure
Sensor unit is then individually powered by dual operational amplifier IC3 and its peripheral circuit, three power supplys that this utility model is adopted
Power-supply service scheme increased a kind of capacity of resisting disturbance of the pressure transmitter when pressure data is gathered and in transmission data
When capacity of resisting disturbance；This utility model also carries out real-time temperature-compensating using temperature compensation unit, it is ensured that pressure data
Degree of accuracy；Electricity of this utility model using low-power consumption detector unit real-time detection battery, and by controlling voltage stabilizing chip
3 foot of control end of IC11 controlling closing and the opening of voltage stabilizing chip IC11, so as to control the power supply of 485 chip U5 unlatching and
Close, it is ensured that low power dissipation design, it is ensured that under unattended operation environment, a kind of long-play of pressure transmitter.
A kind of pressure transmitter described in the utility model, is designed by Constant Current-Source Design and dual power supply, realizes transmission
High anti-jamming capacity and low-power consumption function when signal and collection signal, it is adaptable to the strong electromagnetic interference environment of unattended duty.
Claims (7)
1. a kind of pressure transmitter, it is characterised in that：Including master controller IC5, pressure sensor unit, signal transmission unit,
Power subsystem, temperature compensation unit, low-power consumption detector unit, ground wire GND and ground wire AGND；
The 22 feet connection ground wire GND of master controller IC5, the 3-8 feet of master controller IC5 are all connected with ground wire AGND；
Pressure sensor unit includes that dual operational amplifier IC3, pressure transducer CGQ1, audion A2, audion A3, test connect
Line terminals CSJ1, diode D12, resistance R3, resistance R15, resistance R18, resistance R7, resistance R10, resistance QR23, resistance WR1,
Resistance WR2, electric capacity C17, electric capacity C10, electric capacity C18 and electric capacity C19, the positive pole connection ground wire AGND of diode D12, diode
The negative pole of D12 connects 8 feet of dual operational amplifier IC3 by resistance R3, and electric capacity C17 is connected in parallel with diode D12,
The negative pole of diode D12 also connects 3 feet of dual operational amplifier IC3 by resistance WR1, and the positive pole of diode D12 is also by electricity
Resistance WR2 connects 3 feet of dual operational amplifier IC3, and 2 feet of dual operational amplifier IC3 connect 3 feet of pressure transducer CGQ1, double
1 foot of operational amplifier IC3 connects 1 foot of pressure transducer CGQ1, and the 4 feet connection ground wire AGND of dual operational amplifier IC3 is double
The colelctor electrode of the 8 foot connecting triode A2 of operational amplifier IC3, the colelctor electrode of the base stage connecting triode A3 of audion A2, three
The base stage of the emitter stage connection ground wire AGND of pole pipe A3, audion A3 by resistance QR23 connecting test binding post CSJ1 2
Foot, 1 foot of the emitter stage connecting test terminal CSJ1 of audion A2, the base stage of audion A3 connect ground wire by resistance R10
3 feet of AGND, calibrating terminal CSJ1 connect 20 feet of master controller IC5, connect between 2 feet and 4 feet of pressure transducer CGQ1
There is electric capacity C10,2 feet of pressure transducer CGQ1 connect 1 foot of master controller IC5 by resistance R15, pressure transducer CGQ1's
4 feet connect 2 feet of master controller IC5 by resistance R15, and 1 foot of master controller IC5 also connects ground wire AGND by electric capacity C18,
2 feet of master controller IC5 also connect ground wire AGND by C19；
Signal transmission unit includes 485 chip U5, resistance R33, resistance R34, resistance R35, resistance R36, TVS protector D8, TVS
2 feet and 3 feet of protector D16 and TVS protector D17,485 chip U5 connect the 25 of master controller IC5 by resistance R33
Foot, 1 foot of 485 chip U5 connect 23 feet of master controller IC5, and 4 feet of 485 chip U5 connect 24 feet of master controller IC5,
The 5 feet connection ground wire GND of 485 chip U5,7 feet of 485 chip U5 connect 1 foot of TVS protector D8,485 cores by resistance R34
6 feet of piece U5 connect 2 feet of TVS protector D8 by resistance R35, are connected with resistance between 1 foot and 2 feet of TVS protector D8
1 foot of R36, TVS protector D8 connects 1 foot of TVS protector D17, and 2 feet of TVS protector D8 connect the 1 of TVS protector D16
Foot, 2 feet of 2 feet and TVS protector D16 of TVS protector D17 are all connected with ground wire GND, 1 foot of TVS protector D8 and 2 foot structures
Into a kind of signal output part of pressure transmitter；
Power subsystem include voltage stabilizing chip IC1, voltage stabilizing chip IC11, battery BT1, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C3,
Electric capacity C6, electric capacity C2, electric capacity C1, resistance R8 and magnetic bead R27,1 foot of voltage stabilizing chip IC1 connect the positive pole of battery BT1, battery
The positive pole of BT1 is also connected with the emitter stage of audion A2, the negative pole connection ground wire GND of battery BT1, the 2 feet connection of voltage stabilizing chip IC1
Electric capacity C2 and electric capacity C1 connection ground wire GND that the positive pole of ground wire GND, battery BT1 is also linked together in parallel, voltage stabilizing chip
1 foot and 3 feet of IC1 links together, and 5 feet of voltage stabilizing chip IC1 connect 2 feet of resistance R8, and 1 foot of resistance R8 exists in parallel
Electric capacity C7 together and electric capacity C8 connection ground wire GND, 2 feet of the 1 foot out-put supply VCC of resistance R8, resistance R8 also pass through electric capacity
C9 connects ground wire GND, and 1 foot of voltage stabilizing chip IC1 is also connected with 1 foot of voltage stabilizing chip IC11, the 3 feet connection master of voltage stabilizing chip IC11
19 feet of controller IC 5,5 feet of voltage stabilizing chip IC11 electric capacity C3 in parallel together and electric capacity C6 connection ground wires, voltage stabilizing
5 foot out-put supply VCC485 of chip IC 11, are connected with magnetic bead R27 between ground wire GND and ground wire AGND；
Temperature compensation unit includes critesistor RT, potentiometer R5, resistance RS, resistance R1, electric capacity C11, resistance R28 and resistance
1 foot of 1 foot of R29, critesistor RT, 1 foot of resistance RS and resistance R1 connects ground wire GND, critesistor by electric capacity C11
2 feet of RT connect 28 feet of master controller IC5 by potentiometer R5, and 2 feet of resistance RS connect 27 feet of master controller IC5, electricity
2 feet of resistance R1 connect 13 feet of master controller IC5, and 1 foot of resistance R28 connects 1 foot of resistance R8, and 2 feet of resistance R28 are by electricity
Resistance R29 connection ground wire GND, 2 feet of resistance R28 are also connected with 30 feet of master controller IC5, and 1 foot of resistance R30 is connected by resistance R4
The positive pole of battery BT1 is connect, 2 feet of resistance R30 connect 29 feet of master controller IC5, and 2 feet of resistance R30 are connected by resistance R31
Ground wire GND.
2. a kind of pressure transmitter as claimed in claim 1, it is characterised in that：The model of the master controller
C8051F350；Model LM358 of the dual operational amplifier IC3.
3. a kind of pressure transmitter as claimed in claim 1, it is characterised in that：The model of the pressure transducer CGQ1
XJC-Y04。
4. a kind of pressure transmitter as claimed in claim 1, it is characterised in that：The model of the 485 chip U5
MAX3485ESA。
5. a kind of pressure transmitter as claimed in claim 1, it is characterised in that：TVS protectors D8, TVS protector D16
TVS-SMD-BAV99/SOT_0 is with the model of TVS protector D17.
6. a kind of pressure transmitter as claimed in claim 1, it is characterised in that：Voltage stabilizing chip IC1 and voltage stabilizing chip
The model of IC11 is S818；Model PT100 of the critesistor RT.
7. a kind of pressure transmitter as claimed in claim 1, it is characterised in that：The model of the test binding post CSJ1
LZ1RM-3.5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621081843.XU CN206146570U (en) | 2016-09-26 | 2016-09-26 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621081843.XU CN206146570U (en) | 2016-09-26 | 2016-09-26 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206146570U true CN206146570U (en) | 2017-05-03 |
Family
ID=58621837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621081843.XU Active CN206146570U (en) | 2016-09-26 | 2016-09-26 | Pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206146570U (en) |
-
2016
- 2016-09-26 CN CN201621081843.XU patent/CN206146570U/en active Active
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