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Emerson Process Management GmbH & Co. OHG 8-33
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
8
Troubleshooting
8.4 Troubleshooting on Components
8.4.4 Paramagnetic Oxygen Cell: Adjustment Of Physical Zero
Step 1:
The adjoining gure shows a
heated paramagnetic oxygen
cell.
Step 2:
Open the cell cover by loosening
the screw S1 at the top.
To adjust the physical zero you need to
measure some voltages on the XSP board:
Depending on which channel the cell is as-
signed to, the measuring signal (+) can be
measured at pin 3 of the related connector.
GND (-) is available at a separate pin (see
gure).
The measured voltage should be
0 V ± 50 mV.
The cell contains strong ma-
gnets!
Use only non-magnetic tools to
adjust the zero point!
S1
Note!
Depending on your specic instrument alter-
natively an unheated cell may be installed.
In this case skip step 2 and continue with
step 3.
+6 V
-6 V
Signal connectors
Signal pins
GND