Intrinsically Safe Flammable (incl. Hydrogen) Fixed Gas Detector FGD3 Series Using Catalytic (Pellistor) Gas Sensor Technology 

Sensors available for the detection of Hydrocarbon gases or Fuels. 
Detects a wide range of Hydrocarbon gases and Hydrogen
Sensors available for either 0-100% LEL or 0-100% volume gas. 
Suitable for use in Zones 1 and 2 hazardous areas. 
Three wire connection. 
8 to 24 volt dc operation (also requires an additional supply of 4 to 7 volts dc to power the sensor). 
Industry standard 4 to 20mA output. 
Digital display. 
Single operator calibration. 
Optional weather guard available. 
Hazardous Area Certificate No. 
BAS 01ATEX2300 
II 2 G Ex ia IIC T4 Gb (-20 deg. C ≤Ta≤ +60 deg. C) 
The FGD 3 Flammable Gas Detector uses 'pellistor' technology to detect a wide range of hydrocarbons, fuel gases and Hydrogen. The sensor can be set to detect either methane or general hydrocarbons. Pellistor sensors can be fitted to detect hydrocarbons over the range 0 to 100% Lower Explosive Limit (LEL) or 0 to 100% Volume gas. The detectors use the industry standard 4-20mA current loop to convey the gas levels detected to a control unit. 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 heads use a three-wire connection. While the loop current supplies the power required by the detector head electronics within the detector head, a second supply must be provided to power the pellistor sensor. 
FGD3 Weatherguard 
An optional weather guard is available for installations exposed to the atmosphere or contaminants and is also suitable for use in other areas where hosing down takes place. The weather guard reduces the possibility of water or other contaminants entering into the gas sensor thereby improving the overall reliability of the gas detector in harsh environments. The weather guard is attached with tamperproof screws to ensure that it is not inadvertently removed. 
Collector Cone 
A collector cone is available which can be fitted around the sensor inlet in order to concentrate any gas present around the sensor and hence improve the detection ability. Mounting brackets are also available. 
Mounting Kits 
A Swivel Mounting Bracket and Ceiling Mounting Kit is available for use with this range of gas detectors. In addition, a duct mounting kit is also available. Please contact Status Scientific Controls to discuss your particular application. 
Stock No. 
FGD3 Flammable Gas Detector 0-100% Volume Gas 
FGD3 Flammable Gas Detector 0-100% LEL Gas 
FGD3 Flammable Gas Detector for Fuel Gases 
FGD3 Series Protective Weather Guard 
FGD3 Series Collector Cone 
FGD3 Series Swivel Mounting Bracket 
FGD3 Series Ceiling Mounting Bracket 
For Quality Gas Detection at  
Competitive Prices Contact 
International - +44 (0) 1623 651381 
For Quality Gas Detection at Competitive Prices 
International - +44 (0) 1623 651381 
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