DESCRIPTION
The GDS 2000 is a modular system designed to operate in conjunction with gas and fire sensors.
Each card and connected sensor may be used as a gas/fire monitor with its own alarm outputs or
coupled together with other units to form a multi-channel system of any required size, having
separate and common alarm outputs.
The design allows for continuous operation in situations of extreme environmental conditions such
as heavy industry, petro-chemical installations and off-shore oil and gas platforms.
COMBUSTIBLE GAS CARD
When connected to a suitable power supply and sensor this unit becomes a single channel monitor
being fully equipped with:-
a
Meter - to indicate concentration of gas
b
Power ON indicator
c
Alarm 1 and alarm 2 indicators (Low and High) - latched or unlatched option.
d
Fault indicator
e
Overrange indicator (Alarm 3 indicator)
f
Alarm sounder
g
Alarm relays or Alarm signals
h
Analogue output signal 4-20mA - optional 1-5v
i
Alarm Accept and Reset switch
j
Inhibit switch to disable Alarm relays
k
Adjustments - see Fig 1
TOXIC GAS/FIRE CARD
Similar to the Combustible Gas Card but having the input circuit configured to function with an
input of 4-20mA from a sensor device. Identified by a ‘T’ after the serial number, and a black plug
restriction access to the calibration potentiometer located on the front panel (Gas Card).
3
