STATUS SCIENTIFIC CONTROLS
Installation, Commissioning & Routine Gas Testing
FGD10A-M Gas Detector
TD18/032
Issue:
10
Change Note:
1869
Page 9
The FGD10A-M is an explosion protected ATEX and IECEx certified fixed
gas detector for use in potentially explosive atmospheres. The unit may be
optionally fitted with a protective weather guard as shown in the photograph.
IMPORTANT
– When used in hostile environments (e.g. oil platforms
where the instrument is exposed to salt spray or diesel) it is
recommended that the FGD10A-M is always fitted with its protective
weather guard. The weather guard is attached with tamperproof screws
to ensure that it is not inadvertently removed.
The unit comprises an instrument housing having two cable gland entries
and containing the connection terminals, electronics and display window.
The housing containing the gas sensor has an M27 thread and is screwed
into the bottom of the unit. The sensor housing itself is a certified component
and must not be removed in service.
Behind the display window are:-
•
A 160x128 graphics OLED display
•
Four magnetically operated switches that are activated through the
display window using a magnetic pen that is supplied with the unit.
•
LED indicators for POWER
The magnetically operated switches allow the unit to be calibrated
whilst power is still applied without the need to remove the cover from
the unit.
The main electrical features of the unit are:-
•
Power supply
– 8 to 24 volts dc (non-intrinsically safe)
•
Analogue output
– 4 to 20mA dc
•
RS485 communications output.
•
Relay contact outputs for Alarm 1, Alarm 2 and Fault.
•
Gland entry threads available
– 20mm, ½” or ¾” NPT
