Description • 7
Description
This section describes the components of the combustible gas/carbon monoxide sample-draw
detector.
Figure 1: Combustible Gas/Carbon Monoxide Sample-Draw Detector Component Location
LEL Amplifier
Pump
H2S Se nsor
(in side block)
Oxyg en
Sensor
Term ina l
Strip
Mo unting
Foot , 4 X
B
_
W
L E L
G
B
R
S
PW R / S I G
S en so r
C u rr en t
14 8m A
W
+
O
X
Y
G
E
N
G
B
Flow Baffle
LEL Flow
Block
LEL
Sensor
H2S F low
Block
+
R
S
+
+
S
Pilot L ED
Fail L ED
Pressure Swit ch
Adju stm ent Scre w
(behind PCB)
Flowmet er
Pump R eset
Switch
B
G
S
A MP 1
+
S
R
A MP 2
+
W
G
O X Y
+
This End To
Inlet F ittin g
Pump C onnector
Part icle F ilt er
Interconnect
Term inal
Strip
Sensor Flow
Control Valve
Flowmet er C ircuit
Board C onne cto r
W
W
LE L/ I R
H2S
Amplifier
Inlet
Fitting
Exh aust
Fitting
INLET
EXHAUST
3/4 " C onduit H ub
LE L/ I R
A MP
O X Y
A MP 2
Hydrophobic
Filt er
Detecto r/ Am p
Term ina l Strip
(Factory W ired)