AZI Customer Service 800-528-7411 or 602-470-1414
Page 39 of 57
Potential Interferences
Potential interferences to the Jerome
®
hydrogen sulfide analyzers are rare and most of these can
be eliminated with proper maintenance procedures. However, erroneously high readings can
sometimes occur. Here are a few things to be aware of when using the instrument:
The gold film sensors used in the Jerome
®
hydrogen sulfide analyzers do not respond to the
following compounds:
•
Hydrocarbons
•
CO, CO
2
, and SO
2
•
Water vapor (Note that water vapor condensation on the gold film can cause
irreparable harm to the sensor and must be avoided.)
However, the following compounds may cause the gold film sensor to respond:
•
Chlorine
•
Ammonia
•
NO
2
•
Most mercaptans (organic sulfur compounds or “thiols”)
Special filters designed to remove chlorine or ammonia gas are available from Arizona Instrument
and may be ordered as Chlorine Filter, AZI P/N Z2600-3940 or Ammonia Filter, AZI P/N 990-
0183. Visit the “Tech Notes” section at
for more information concerning the
chlorine and ammonia filters.
Filter replacement at regular intervals, or when unexpectedly high readings are encountered in
areas of these potential interferents, may resolve these problems.
