M2A Transmitter Operator’s Manual 29
Oxygen Detectors: Partial Pressure, Capillary Type, and CSA Capillary Type
The wiring for all the oxygen detectors is the same. White wire to terminal labeled OXY +, green wire to
terminal labeled OXY -.
Figure 23: Partial Pressure Oxygen Detector Wiring
Figure 24: CSA Capillary Type Oxygen Detector Wiring
Figure 25: Capillary Type Replaceable Sensor Oxygen Detector Wiring
Green
White
C NC NO
ALARM 1
C NC NO
ALARM 2
C NC NO
FAIL
- S +
PWR/SIG
TOXIC OXY
+ - + -
RS 485
A B C
Green
White
C NC NO
ALARM 1
C NC NO
ALARM 2
C NC NO
FAIL
- S +
PWR/SIG
TOXIC OXY
+ - + -
RS 485
A B C
Green
White
C NC NO
ALARM 1
C NC NO
ALARM 2
C NC NO
FAIL
- S +
PWR/SIG
TOXIC OXY
+ - + -
RS 485
A B C
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