PTFE Venting Membrane Applied in Humidity Sensors

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MS® PTFE Venting Membrane Applied in Humidity Sensors Description

Humidity sensor performance is dependent upon vent performance. Consistently high airflow and moisture vapor transmission rates are essential if sensors are to respond quickly to changes in ambient conditions. Rapid pressure equalization is essential for maintaining accurate readings and for preventing sensor failure that can cascade to component or system failure. High-airflow Membrane Solutions’ Vents facilitate rapid response in humidity sensors for higher performance and customer satisfaction.

Features & Benefits

  • Superior airflow management / avoids condensation-related failures
  • Reliable sensor operation / prevents over-pressurization or vacuum conditions within sensor
  • An effective fluid barrier / blocks ingress of water and automotive solvents or oils
  • Reliable protection from contaminants / blocks dust, dirt, debris


Adhesive series

Part No. Series VE8 Series VE7 Series VE9
Typical airflow (DP = 70 mbar) 3300 ml/min/cm2 290 ml/min/cm2 1150 ml/min/cm2
Membrane characteristic Oleophobic
Membrane color White Black White
Backing material PET nonwoven None
Adhesive type Acrylic Silicone
Typical thickness 0.26 mm 0.34 mm 0.32 mm
Mounting location Interior of the housing Interior or exterior of the housing

Screw-in series

Part No. PMF100318/ PMF100319 PMF100320/ PMF100321 PMF100391/ PMF100392 PMF100519/ PMF100520  PMF100444 PMF200542
Water entry pressure >0.6bar/30 sec >0.6bar/30 sec >0.3bar/30sec >0.3bar/30sec >0.3bar/30 sec >0.3bar/30 sec
Typical airflow 450ml/min (dp=70mbar) 450ml/min (dp=70mbar) 2500ml/min (dp=70mbar) 2000ml/min (dp=70mbar) 1700ml/min (dp=70mbar) 16ml/min (dp=12mbar)
membrane characteristic Oleophobic Oleophobic Hydrophobic Oleophobic Oleophobic Oleophobic
Installed height 5.6mm 5.6mm 5.6mm 5.6mm 11.5mm 9.7mm

Snap-in series

Part No. Water Entry Pressure Typical Airflow(dp=70mbar) Membrane Characteristic Installed Height
VE0006GSV >0.3bar/30sec 35ml/min Oleophobic 1.5 mm

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