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WP401A Female Threaded Connection Negative Pressure Transmitter

WP401A Negative Pressure Transmitter can be essential for all sorts of processes requiring negative pressure control:

  • ✦ Chemical Reaction Kettle
  • ✦ Freeze Dryer Module
  • ✦ LNG Pipeline
  • ✦ Ventilation System
  • ✦ Suction Filtration
  • ✦ Hydraulic Braking System
  • ✦ Clean-in-place System

WP401A Pressure Transmitter is able to measure process negative pressure from zero point to absolute vacuum. Connection approach is customizable including all kinds of male/female thread, flange and tri-clamp to perfectly match the corresponding tapping point reserved at operating site. 

Item name Female Threaded Connection Negative Pressure Transmitter
Model WP401A
Measuring range 0—(± 0.1~±100)kPa, 0 — 50Pa~1200MPa
Accuracy 0.1%FS; 0.2%FS; 0.5 %FS
Pressure type Negative; Gauge; Absolute; Sealed
Process connection 1/2"NPT(F),G1/2”(M), 1/4“NPT(M), Flange, Customized
Electrical connection Terminal block cable gland
Output signal 4-20mA(1-5V); Modbus RS-485; HART; 0-10mA(0-5V); 0-20mA(0-10V)
Power supply 24VDC; 220VAC, 50Hz
Compensation temperature -10~70℃
Operating temperature -40~85℃
Explosion-proof Intrinsically safe Ex iaIICT4 Ga;  Flame-proof Ex dbIICT6 Gb
Material Shell: Aluminium alloy
Wetted part: SS304/316L; PTFE; Tantalum; Hastelloy C-276; Monel, Customized
Medium Liquid, gas, fluid
Field Display LCD, LED, Intelligent LCD
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 WP401A Negative Pressure Transmitter, please feel free to contact us.