Teledyne 2750 - Portable turbine generator gas analzyer - Manual (Page 33)

Turbine Generator Gas Analyzer Setup and Operation
Teledyne Analytical Instruments 33
2. Adjust the pressure regulator to 0.5-30 psig.
3. Slowly open the sample valve and adjust the flow on the
flowmeter to 0.1-1 SCFH.
Note: The operator must know in advance what gas mixture is
present in the sample stream to be able to properly select
the instrument range. All ranges will give some indication
of output (even if zero) but only that range corresponding
to the correct sample gas mixture will give an accurate
reading.
4. Make sure the calibration switch is in the analyze position
5. Select the proper range and allow gas to flow for several minutes
to purge the lines of any residual air or gas.
Note: Whenever switching gases, always allow a sufficient purge
time to remove the residual gas. Note the changing
concentration values until a steady reading is obtained
(unless the sample gas stream concentration is changing).
When the reading settles, the instrument is sufficiently
purged.
6. Read the sample gas concentration from the display.