Manual
EI-5 Manual Rev A 6
OPERATING INSTRUCTIONS
Basic Ethane Identier Procedure used in a clean background atmo-
sphere:
1. Switch valve to the “Time” position.
2. Turn on the instrument using the on/off, zeroing switch on the left
hand side of the instrument.
3. Let the instrument warm up for a few minutes. This is indicated by the
graph on the display decreasing towards zero.
4. Zero the instrument using the zero potentiometer on the left side of
instrument.
5. Connect the tubing with the hydrophobic lter in-line to the probe and
then connect other end to the instrument port labeled “Inlet”. Take
sample. (10 – 75 LEL works best).
6. Switch valve to “Sample” and the pump will draw the sample into the
instrument. Only a few seconds is required.
7. Flip the valve to time and begin
timing. The rst peak should show
on the graph in approximately 10
to 25 seconds and then approach
the zero point, a second peak
(if the sample taken has ethane
present) should appear in 30 to 45
seconds. The second peak will be
smaller and not last as long as the
rst methane peak.
8. Leave the valve in the “Time” position and let the instrument clear in a
non gaseous environment.
9. Wait 30 seconds after last peak before taking another sample.
10. Turn instrument off.
Note: The Hetek Ethane Identier Model EI-5 should not be used on
heavy hydrocarbons. If C4 + hydrocarbons are expected, test for heavy
hydrocarbons by using a charcoal lter with your C.G.I. The Hetek Ethane
Identier should only be used to differentiate pipeline natural gas from
naturally occurring methane such as marsh gas, swamp gas, landll gas,
soil gas or methane from other sources.
Ethane Identier Procedure in a non clean atmosphere:
1. Connect the hydrocarbon trap to the “Carrier” port on the instrument
using the compression tting. Hand tighten only.
2. Switch valve to the “Time” position.