Teledyne 4040 - Methane / Nonmethane analyzer - Manual (Page 38)

Installation Series 4040
38 Teledyne Analytical Instruments
3.5 Activating the Support Gases
3.5.1 Air
1. Set the air tank regulator to 30 psig.
2. Adjust the Analyzer Air regulator until the air pressure gauge
reads the recommended air pressure of 9 psig.
After the air is flowing through the sensor and warm-up time has
been completed, activate the following gases:
3.5.2 Carrier Gas
Set the Carrier gas tank regulator to 50 psig and adjust the Analyzer
Sample regulator until its (sample) pressure gauge reads the
recommended sample pressure of 9.5 psig.
3.5.3 Span Gas
The Span gas containing methane and propane in air is
recommended. The concentration should be methane at about 80% of
the full scale and propane at about 20% of the scale. For example, if the
analyzer is to be primarily used in the 0 to 10 ppm range, we
recommend a Span as mixture containing 8 ppm methane and 2 ppm
propane
The Span Gas may be connected directly to the optional
SAMPLE/SPAN manifold provided in the back of the analyzer. The
Span Gas should be a mixture of methane gas and propane gas in zero
air background.
3.5.4 Fuel
1) Open the main valve on the tank and set the fuel tank
pressure regulator to 30 psig.
2) Adjust the Fuel regulator until its pressure gauge reads the
recommended pressure of 3.0 psig.
Note: Adjust fuel settings only when the red LED (flame
failure light) is off.