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WP401B Economical type Column Structure Compact Pressure Transmitter

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WP401B Economical type Column Structure Compact Pressure Transmitter features a cost-effective and convenient pressure control solution. Its lightweight cylindrical design is ease-of-use and flexible for complex space installation in all kinds of  process automation applications.

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WP401B Economical type Column Structure Compact Pressure Transmitter can be used to measure & control liquid, gas and fluid pressure in lots of industrial fields:

  • ✦ Petrochemical
  • ✦ Automotive
  • ✦ Power Plant
  • ✦ Pump & Valve
  • ✦ OIL & GAS
  • ✦ CNG/LNG Storage
  • ✦ Water Conservancy Project
  • ✦ Environmental Engineering


The compact pressure transmitter could exhibit outstanding performance at a fairly competitive price with a wide range of customization options offered. The electrical connection is chosen from hirschmann, waterproof or aviation plug and can also do ex-proof or immersion type (IP68) cable lead. Micro LCD/LED indicator and sloping LED with 2-relay is compatible with the column case. Default SS304 wetted part and SS316L diaphragm can be substitute with other corrosion resistant material to accommodate different media. Including standard 4~20mA 2-wire, HART protocol and Modbus RS-485, multiple output signals are provided for selection.


Excellent cost-effective performance

Compact lightweight and robust structure design

Easy-of-use, maintenance-free

Selectable measuring range up to 400Mpa

Suitable for narrow operating space mounting

Customized wetted part for corrosive medium

Configurable Smart Communication RS-485 and HART

Compatible with 2-relay alarm switch


Item name Economical type Column Structure Compact Pressure Transmitter
Model WP401B
Measuring range 0—(± 0.1~±100)kPa, 0 — 50Pa~400MPa
Accuracy 0.1%FS; 0.2%FS; 0.5 %FS
Pressure type Gauge; Absolute; Sealed; Negative
Process connection G1/2”, M20*1.5, 1/4NPT", Customized
Electrical connection Hirschmann(DIN); Cable gland; Waterproof plug, Customized
Output signal 4-20mA(1-5V); Modbus RS-485; HART; 0-10mA(0-5V); 0-20mA(0-10V)
Power supply 24(12-36) VDC; 220VAC
Compensation temperature -10~70℃
Operating temperature -40~85℃
Explosion-proof Intrinsically safe Ex iaIICT4;  Flameproof safe  Ex dIICT6
Material Shell: SS304
Wetted part: SS340/316L; PTFE; C-276; Monel, Customized
Media Liquid, Gas, Fluid
Indicator (local display ) LED, LCD, LED with 2-relay
Maximum pressure Measurement upper limit Overload Long term stability
<50kPa 2~5 times <0.5%FS/year
≥50kPa 1.5~3 times <0.2%FS/year
Note: When range <1kPa, only no corrosion or weak corrosive gas can be measured.
For more information about WP401B Column Pressure Transmitter please feel free to contact us.

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