Features
- 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.
Description
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.
Weather Guard
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.