ENMET GSM-60 - Manual (Page 15)

GSM-60 ENMET Corporation
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4.7 Fault Indications
4.7.1 Low Flow Indication
A flow sensor is used to furnish a low flow indication. When the sample air pressure drops below preset levels, the fault light
and audio alarm are activated, and the display flashes “Low Flow Alarm”. If two sampling hoses are connected to one
GSM-
60 , the flow sensor can only detect a total flow fault condition. For example: a pump failure or both sampling hoses being
blocked. The system can not detect a flow fault if only one of the two sampling hoses is blocked.
4.7.2 Other Fault Indications
Other fault indications are associated with sensor zero and calibration activities, and are described in the maintenance Section
5.0 of this manual.
4.8 Hydrocarbon Sensor Response
If a Hydrocarbon (HC) sensor is supplied with the GSM-60 instrument, it designed to detect hydrocarbon gases and vapors
with an ionization potential (IP) of 10.6 eV or less. Hydrocarbons with an IP of greater then 10.6 eV will NOT be detected.
Please see Appendix B for a list of common gases and vapors and their respective IP rating.
Unless otherwise noted Isobutylene is used as a calibration and reference gas.