Heath Consultants EI-5 Ethane Gas Identifier - Manual (Page 14)

EI-5 Manual Rev A 11
Caution: For accurate indications the temperature and humidity of the
atmosphere being tested should be approximately the same as that of the
instrument.
For optimum results attempt to analyze samples at a concentration of about
10 LEL to 75 LEL. If high concentrations above 10% by volume are analyzed,
proper separation between components cannot be observed. It may be
necessary to take the sample at the fringe area of a suspected pipeline
leak rather than at the highest concentration as established with the C.G.I.
Note: It is important that the operator of the Ethane Identifier take several
tests on their own gas mixture at regular intervals. This will familiarize the
operator with the instrument and will provide an elution (separation) pattern
for that operator’s particular gas. The times listed on instrument might need
to be changed over time as the column ages. A good procedure is to check
on a known gas at least once a month or before use.
INTERPRETING READINGS