Intrinsically Safe Gas Detectors Type FGD3
For the detection of Flammable Gases using 'Pellistor' Technology
Certificate No.
BAS 01ATEX2300
II 2 G EEx iad IIC T4 (-20 deg. C <Ta< +60 deg. C)
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.
- Digital display.
- Single operator calibration.
- Industry standard 4 to 20mA output.
- Optional weather guard available.
Description
The
FGD 3 Flammable Gas
Detector Head 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 infrared sensor
and its associated
circuitry.
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 reliabilty
of the gas detector
in hash 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.
Order Codes
| Stock No. | Description |
|---|---|
| SS415 | FGD3 Flammable Gas Detector 0-100% Volume Gas |
| SS416 | FGD3 Flammable Gas Detector 0-100% LEL Gas |
| SS417 | FGD3 Flammable Gas Detector for Fuel Gases |
| SS429 | FGD3 Series Collector Cone |
| SS374 | FGD3 Series Swivel Mounting Bracket |
| SS375 | FGD3 Series Ceiling mounting Bracket |
| SS475 | FGD3 Series Protective Weather Guard |