Measuring Points At Oxs Board (Electrochemical Oxygen Measurement)8-17; Sensor Signal; Fig. 8-4: Oxs Board, Assembled, Top View - Emerson Rosemount Xstream Series Instruction Manual

Instruction Manual
HASAxE-IM-HS
05/2006
8-4-3-2 Measuring Points at OXS Board (Electrochemical Oxygen Measurement)

8-4-3-2-1 Sensor Signal

Measuring Points:
Measuring instrument:
Signal when connected to ambient air (approx.
21 Vol. - % O ): approx. 3.36 V with new cell
2
Failure: No signal or wrong measuring values
Potential cause:
a) Sensor not connected to OXS board
b) OXS board defective
c) Sensor defective or worn-out
d) BKS board defective
Note!
Sensor is worn-out when, connected to
ambient air, the output voltage is less than
2.8 V: Replace sensor!
Tp 1
Emerson Process Management GmbH & Co. OHG
8-4 Troubleshooting on Components
Tp 1 (Signal)
Tp 2
DVM

Fig. 8-4: OXS board, assembled, top view

How to solve:
a) Connect sensor to OXS board
b) Replace OXS board
c) Replace sensor
d) Replace BKS board
Tp 2
X-STREAM
8-17