Envent Engineering Ltd. Page 39 Revision 2.4
H2S Sensing Tape Issues (Cont’d)
Sensor/ sensor wire failure Try re-zeroing the sensor. Refer to "Re-zero
Sensor procedure" on page 29.
If procedure fails, Sensor or sensor wire
may require replacement.
H2S sensing
Tape coming
out of sample
chamber/trigger
slide
Trigger slide not seated
properly
Ensure trigger slide is seated in groove of
sample chamber
Electronics Issues
Fault LED
(Sensor High)
Incorrect zeroing Make sure the H2S Sensing tape is
installed properly and do a motor run.
To do a motor run: Display>Press Menu
Button until "MTR Run">Press right button.
This will activate the motor and move the
H2S Sensing tape for a few seconds. The
alarm should clear.
Faulty Sensor Sensor needs to be replaced. Contact
Envent Engineering Ltd for replacement.
Fault LED
(Sensor Low)
Sensor did not zero on white
H2S sensing tape because
H2S sensing tape came out of
sample chamber slot
Re-install H2S Sensing tape. Refer to "H
2
S
Sensing Tape Change Procedure" on page
31 or on sticker in the analyzers door.
Re-zero sensor block. Refer to Refer to
"Re-zero Sensor procedure" on page 29.
Sensor/ sensor wire failure Re-zero the sensor block. Refer to "Re-zero
Sensor procedure" on page 29. If procedure
fails, sensor or sensor wire may require
replacement.
Continued on next page
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