Figure 3-8: Range Switch In Air/Co2 Position; Figure 3-9: Air/Co2 Span Trimpot - Teledyne 2750 Operating Instructions Manual

Turbine Generator Gas Analyzer

Figure 3-8: Range Switch in AIR/CO2 Position

5. Adjust the air/CO2 span trim pot so that the display indicates
100% ±0.1%. See Figure 3-9
6. After successfully completing the span calibration on the air/CO
range, close the sample valve and replace the air span gas source
with the H span gas source. Make sure the regulator is set at
2
approximately 5 psig.
CAUTION: HYDROGEN IS A FLAMMABLE AND EXPLOSIVE
GAS. ALWAYS USE CARE WHEN HANDLING
HYDROGEN GAS. MAKE SURE THERE ARE NO
LEAKS IN THE SAMPLE IN OR VENT LINES AND
THAT THE VENT LINE IS DIRECTED IN A SAFE
MANNER.
7. Allow H to flow for a few minutes to fully purge the instrument.
2
Set the flow between .5-1 SCFH.
8. Make sure the calibration switch is in the
set the range switch to the H2/CO2 position. See Figure 3-10
Teledyne Analytical Instruments

Figure 3-9: AIR/CO2 Span Trimpot

Installation
position then
ANALYZE
2
27