Low Cost 4-20mA & Hart Protocol Smart Differential Pressure Transmitter for Flow Measurement

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    The date of payment from buyers deliver within days

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    Long-term effective

  • Last update:

    2017-12-29 21:30

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Company Profile


By certification [File Integrity]

Contact:Ms. Lily Huang(Mr.)  






Website: http://www.mhjpj.com/com/wnksensor/


WNK55 Smart High Accuracy Gauge/Absolute/Differential Pressure Transmitter
Features Applications:
1. High reference accuracy up to 0.075%, higher on request. 1. Gauge, absolute and differential pressure measurement in gases, steam or liquids in all areas of of engineering process and measurement.
2. Long-term drift ≤±0.15%URL for 5 years.
3. Range down ratio 100:1; higher on request. 2. Level, volume or mass measurement in liquids.
4. Replaceable display unit & electronic module.
5. Universal electronics. 3. Working with detecting element, measure the flow of gases, steam and liquid flow.( volume and mass flow)
6. Menu-guided operation.
7. Factory default data recovery is supportive
8. HART,PROFIBUS-PA or FF protocol for option. 4. High pressure up to 40bar.

 WNK55 Smart High Precision Gauge/Absolute/Differential Pressure Transmitter
Technical Data
Applicable media liquid, gas and steam
Pressure range -100kPa~1000kPa
Accuracy 0.075%, higher on request
Stability ±0.15% of URL for 5 years
Temperature drift ±0.03% of URL/10ºC
Output signals 4~20mA, Hart, Profibus-PA for option, FF per request
Display LCD, or pointer optional
Housing material Aluminum14
Mechanical connection M20×1.5;G1/2;1/2NPT
Protection class IP66/67
Ex-proof Exia II CT4, other option per request
Power Supply 10.5-55V DC 10.5-30V DC
Ambient temperature -40 to 85ºC,-40 to 80ºCfor LCD header
Storage temperature -45 to 85ºC,-40 to 80ºC for LCD header ;
Measurement with display: 95*126*52 (mm)
without display: 95*115*52 (mm)
Net Weight 4kg (without bracket or process connection)

 Installation diagram (unit : mm)

Ordering information
Model Product details
WNK55 Smart high precision differential pressure transmitter
 Code Approval
A For non explosion-proof areas
1 ExiaIICT6
2 ExiaIICT4
3 ExdIIBT6
For other approvals or more information, please contact with us
Code Output code
A 4…20mA
H 4…20mA,HART
Code Display
A No display
Code Housing; Cable entry; Protection
A Aluminum 14,M20×1.5,IP66/67
B Aluminum 14,G1/2,IP66/67
C Aluminum 14,1/2NPT,IP66/67
Code Sensor range, for gauge pressure
7B 10mbar,PN160 (1kPa/100mH2O)
7C 30mbar,PN160 (3kPa/300mH2O)
7D 100mbar,PN160 (10kPa/1mH2O)
7F 500bar,PN160 (50kPa/5mH2O)
7H 3bar,PN160 (300kPa/30mH2O)
7L 16bar,PN160 (1.6MPa/160mH2O)
7M 40bar,PN160 (4MPa/400mH2O)
8F 500mbar,PN420 (50kPa/5mH2O)
8H 3bar,PN420 (300kPa/30mH2O)
8L 16bar,PN420 (1.6MPa/160mH2O)
8M 40bar,PN420 (4MPa/400mH2O)
8W 300bar,PN420 (30MPa/3000mH2O)
Code Calibration,Unit
1 Sensor range,mbar/bar
2 Sensor range,kPa/MPa
3 Sensor range,mmH2O/mH2O
4 Sensor range,psi
Code Diaphragm material
1 316L
2 Alloy C-276
X Other special requirement
For any other special diaphragm, please contact with us.
Code Process connection thread, drain valve
A Female thread 1/4NPT,emission exit at tail
B Female thread 1/4NPT,emission exit at side
C Female thread 1/2NPT,emission exit at tail
D Female thread 1/2NPT,emission exit at side
E Male thread M20×1.5,emission exit at tail
F Male thread M20×1.5,emission exit at side
Code Process connection material
3 316
H Alloy C
Code Mounting bracket
A No
U Mounting bracket for pipe
Typical model#:WNK55 AHL A7D 21A3 U

Why Choose us?
1. We are professional manufacturer with own R&D and sales team, with more than 12 years producing experience in transmitters & sensors. 
2. We have strict quality control system, each set product we do temperature compensation and aging test before shipment, so the quality is guaranteed.

Delivery date:
4~6 working days after order confirmed.

Customer specific requirement /ODM/OEM is welcome.