Carbon dioxide (CO2) detector
FGD4 series
Status Scientific Controls
* Ranges available from 0-500ppm up to 0-100% volume CO2 - see 'Order Codes' below for standard ranges.
* Temperature compensated infrared sensor.
* Competitively priced for use in non-hazardous areas only.
* Three wire connection.
* 8 to 24 volt dc operation (also requires an additional supply of 5.8 to 7.5 volts dc to power the sensor).
* Industry standard 4 to 20mA output.
* Plug-in hand held configuration unit.
Description
The FGD4 Safe Area Gas Detector uses the latest infrared sensor technology to accurately detect Carbon Dioxide. These detectors must only be used in areas without a risk of the presence of explosive gases. The detector requires a three-wire connection consisting a power supply connection to power the infrared sensor and a two-wire industry standard 4-20mA current loop to convey the gas levels to a separate control unit such as the Status Scientific Controls LC Series. 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.
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.
