Negative Signal: Possible causes
A. Polarity switched
B. Measure flows, Is Reference >Carrier
C. Wrong gas
D. Switching valve connections: O-rings can dry out and leak
No signal: Possible causes
A. Check signal assignment
B. Check Flows, No reference flow
C. Switching valve connections: O-rings can dry out and leak
D. Filament leads have a poor connection to detector electronics board
E. Detector electronics are not turned on
F. Signal Zero value is set too high
G. Connections to the data recorder
H. Defective electronics board
NOTE.
There could be other causes to any of the above symptoms. If you verify all of these first the next thing
That you should do is contact Agilent Technologies Service.(1-800-227-9770)
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