Troubleshooting and Service
Teledyne API – Model T300/T300M CO Analyzer
274
10. Remove the one (1) screw fastening the GFC Wheel/mask assembly to the GFC
motor hub.
Figure 11-18: Removing the GFC Wheel
11. Remove the GFC Wheel/mask assembly.
12. Follow the previous steps in reverse order to put the GFC Wheel/motor assembly
back together.
11.6.3.
CHECKING AND ADJUSTING THE SYNC/DEMODULATOR,
CIRCUIT GAIN (CO MEAS)
11.6.3.1.
CHECKING THE SYNC/DEMODULATOR CIRCUIT GAIN
The T300/T300M Analyzers will operate accurately as long as the sync/demodulator
circuit gain is properly adjusted. To determine if this gain factor is correct:
1. Make sure that the analyzer is turned on and warmed up.
2. Set the analyzer display to show the
STABIL
or
CO STB
test function.
3. Apply Zero Air to Sample Inlet of the analyzer.
4. Wait until the stability reading falls below 1.0 ppm.
5. Change the analyzer display to show the
CO MEAS
•
The value of
CO MEAS
must be > 2800 mV and < 4800 mV for the instrument
to operate correctly.
•
Optimal value for
CO MEAS
is 4500 mV ± 300 mV. If it is not, adjust the value.
06864D DCN7562
Summary of Contents for T300
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