FA 300-2 Ex - Dew Point Sensor with ATEX approval for Zone 1

Measures the dew point resp. the pressure dew point in explosive areas of Zone 1. Protection class: FA 300-2 Ex: I 2G Ex ia II C T4. With the ATEX approval for Zone 1 the established dew point measuring instruments FA 300-2 can now be used in explosive areas of the industry as well.

FA 300-2 Ex may only be used in connection with approved Ex-rated power supplies or safety barriers or galvanic separating elements with max.



Product Features
  • Robust design
  • Pressure-tight up to 300 bar
  • Long-term stable humidity sensor, approved for years
  • 4...20 mA analogue output in 2-wire technology
  • Further parameters adjustable via software: % RH, g/m³, mg/m³, ppm, V/V, g/kg
  • CS Service Software for data storage and calibration (no approval for explosive areas)


Technical Data
Measuring range -80...20°Ctd resp. 0...100% RH
Accuracy ± 0.5°C at -10...50°Ctd
± 2°C remaining range
Pressure range -1...300 bar
Power supply 24 VDC (10...30 VDC)
Protection class IP 65
EMV According to DIN EN 61326
Operating temperature -20...70 °C
Connection M12, 5-pole
PC connection SDI interface
Screw-in thread G 1/2“ stainless steel
Dimensions Ø 30 mm, length pprox.. 130 mm
Output signal 4…20 mA 2-wire connection
Burden for analogue output < 500 Ω
Housing material Polycarbonate
Sensor protection Sintered filter 50 micron stainless steel