Hydrogen Chloride Safe Area Fixed Gas Detector FGD4 Series, Loop Powered 4 To 20mA Transmitter Using Electrochemical Gas Sensor Technology 

Features 
 
Standard range 0-30ppm HCl. 
Competitively priced for use in non-hazardous areas only. 
Two wire connection. 
8 to 24 volt dc operation. 
Industry standard 4 to 20mA output. 
Plug-in hand held configuration unit. 
 
 
Description 
 
The FGD4 Safe Area Gas Detector uses electrochemical sensor technology to detect the Hydrogen Chloride gas level in the atmosphere. The detector uses the industry standard 4-20mA current loop to both power the detector and to convey the gas levels detected to a separate control unit such as the Status Scientific Controls LC 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. 
 
Calibration of the FGD4 can be carried out simply by using ZERO and SPAN buttons inside the instrument provided that the concentration of the calibration gas is the same as that used for factory calibration of the detector (refer to the instrument calibration certificate for details). 
 
Alternatively, the purpose designed plug-in hand held configuration unit shown below may be used together with any appropriate test gas concentration. 
Configuration Unit 
 
The FGD4 is calibrated using a purpose designed plug-in hand held configuration unit. To carry out a calibration, the operator must open the front cover of the unit, plug in the configuration unit and then present zero and span gases to the sensor during the course of the calibration procedure. 
 
Note - These gas detectors are not certified for use in potentially explosive atmospheres and therefore must only be used in applications where it is known that potentially explosive gases do not exist. 
 
Stock No. 
Description 
SS780 
FGD4 Hydrogen Chloride Gas Detector - (4-20mA Output) - Range 0-30ppm HCl 
SS748 
Configuration Unit Complete with Cable 
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