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  • Gas pressure differential switch AFS/LFS series
  • Gas pressure differential switch AFS/LFS series
Gas pressure differential switch AFS/LFS series

The gas pressure differential switch product is a type of pressure transmitter mainly developed for various non combustible gases. This product is widely used to monitor the status of various air filters and ventilation equipment; Monitor the airflow status in heating and ventilation ducts; Control the frost protection of air doors, fire doors, and heat exchangers; Overpressure, vacuum, and differential pressure states of other gases.

Product Details

Technical specifications


measurement range 20~300Pa/50~500Pa/100~1000Pa
Pressure limit Maximum 7500Pa
Operating Temperature -20 ℃~85 ℃, 5-95% RH (condensing)
Pressure connection 6.0mm inner diameter plastic hose, P1 high pressure end, P2 low pressure end
switch lifespan Above 10 ⁶
output SPDT,2A/250Vac,1A/30Vac
switching frequency Maximum 6 times/minute
electrical connection Screw connection
reproducibility ±2%
material Main switch body PC, cover PC, diaphragm silicone, silver contacts.
weight Including installation bracket 140g, excluding installation bracket 90g.
encapsulation IP54
Install *Vertical, with the pressure interface facing downwards. This is the calibration position of the switch. If it must be installed horizontally, the actual set point should be increased by 20Pa (cover up) or decreased by about 10Pa (cover down) compared to the scale point. Please refer to the user manual for details

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