Intrinsically Safe Oxygen Deficiency Fixed Detector FGD3 Series Using Electrochemical Gas Sensor Technology 

Features 
 
Range 0-21% Oxygen, O2. Note - the instrument must not be used in an oxygen enriched atmosphere. 
Suitable for use in Zones 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. 
Marine version available. 
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) 
Description 
 
The FGD 3 Oxygen Detector use electrochemical sensor technology to detect for oxygen deficiency in the atmosphere in personal safety applications. The detectors use the industry standard 4-20mA current loop both to power the detector and 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 head uses a two-wire connection. 
 
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. 
 
Stock No. 
Description 
SS401 
FGD3 Oxygen Detector - (4-20mA Output) - Range 0-21% O2 
SS475 
FGD3 Series Protective Weather Guard 
For Quality Gas Detection at  
 
Competitive Prices Contact 
 
sales@status-scientific.com 
 
International - +44 (0) 1623 651381 
For Quality Gas Detection at Competitive Prices 
 
Contact 
 
sales@status-scientific.com 
 
International - +44 (0) 1623 651381