Description – RKI Instruments 35-3001A-01 User Manual
Page 6

2 • 35-3001A-01 Combustible Gas Sample-Draw Detector
Description
This section describes the components of the combustible gas sample-draw detector.
Figure 1: Combustible Gas Sample-Draw Detector Component Location
B
O
X
Y
G
E
N
_
Pum p
O xy gen
Sensor
Terminal
Strip
Mount ing
Foot, 4X
Zero Pot
W
+
S
PW R / SIG
LEL F low
Bloc k
Test P oints
100-500 m V Range
Fail LED
Sensor F low
Control Valv e
Pilot LED
Pum p R eset
Switch
Flowmeter
W
Int erconnec t
Terminal
Strip
+
A MP 1
+
A MP 2
S
S
R
+
W
G
OX Y
G
L EL / IR
Hydrophobi c
Filt er
Flowmeter C ircuit
Board Connect or
Span Pot
Pum p C onnector
Part icle
Filter
B
LEL
Sensor
Inlet
Fit ting
Exhaust
Fit ting
This End
To I nlet
Fit ting
Detect or
Terminal
Strip
Sensor
Curr ent
148mA
3/4" Conduit Hub
Controller
Terminal Strip
W
L EL
G
B
R
LEL Am plif ier
Factory Set Pots
INLET
EXHAUST
S
A MP 2
A MP
+
+
W
B
Pressure
Switch
Adjust ment
Screw
(behind P CB)
Detect or/ Am p
Terminal Strip
(Fact ory
W ired)
L EL / IR
G
S
R
+
OX Y
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