Intrinsically Safe Gas Detectors FGD3 Series

Ammonia Gas Detector

Intrinsically Safe Ammonia Gas Detector


  • Standard ranges 0-100ppm or 0-1000ppm Ammonia NH3.
  • Suitable for use in Zones 0, 1 and 2 hazardous areas.
  • Two wire connection.
  • 8 to 24 volt dc operation.
  • Industry standard 4 to 20mA output.
  • Digital display.
  • Single operator calibration.


The FGD 3 Ammonia Gas Detector uses electrochemical sensor technology to detect the level of Ammonia in the atmosphere over the ranges 0 - 100ppm or 0 - 1000ppm. The detectors use the industry standard 4-20mA current loop both to power the detector and to convey the gas levels detected to a separate control unit such as the Status Scientific Controls MCU Series. This means that under zero gas conditions 4mA is drawn from the supply, and under full scale gas conditions 20mA is drawn from the supply. The current varies linearly for gas levels between zero and full scale. The detector head uses a two-wire connection.

FGD3 Series Data Sheet

Hazardous Area Certification Data

Certificate Number - BAS 01ATEX2300
II 2 G Ex ia IIC T4 Gb (-20 deg. C <Ta< +60 deg. C)
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FGD3 Ammonia Detectors - Order Codes

Stock No. Description
SS406-100 FGD3 Ammonia Gas Detector - (4-20mA Output) - Range 0-100ppm NH3
SS406-1000 FGD3 Ammonia Gas Detector - (4-20mA Output) - Range 0-1000ppm NH3

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