RKI Instruments 65-2405RK-03 - Manual (Page 6)

2 • 65-2405RK-03 Combustible Gas Transmitter
Description
This section describes the components of the combustible gas transmitter. The transmitter
is a 4 - 20 mA type detector head. It consists of the combustible gas detector, calibration
adapter, amplifier, the amplifier junction box, and the detector junction box. The two
junction box configuration is intended for situations where the detector needs to be
installed at an inaccessible location. The detector junction box can be installed at the
inaccessible location and the amplifier junction box can be installed in a more readily
accessible area.
Figure 1: Combustible Gas Transmitter Component Location
Combustible Gas Detector
The combustible gas detector is a catalytic type detector that produces an electrical output
that corresponds to the detection range. It is packaged in a 1/2 inch NPT nipple with a
RB
G
W
PW
R
/ SIG
LE
L
Amplifier
5
7
-1
053
R
K
S
S
2
0
0
1
Terminal Strip
Amplifier J-Box
Controller Terminal
Strip
Detector J-Box
Se
ns
o r
C
u rr
ent m
A
SP
A
N
Zero Pot
Span Pot
Factory Adjust Pot
Factory Adjust
Pot
Jumper Pins,
Factory Use
Only
ZE
R
O
Detector Terminal
Strip
- Test Point
+ Test Point
Calibration Adapter
Combustible Gas Detector