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Teledyne API M100E Analyzer Operation Manual Operating Instructions
111
6.9.5. OPTIC TEST
The optic test function tests the response of the PMT sensor by turning on an LED located in the cooling block of
the PMT (refer to Figure 11-15). The analyzer uses the light emitted from the LED to test its photo-el
ectronic
subsystem, including the PMT and the current to voltage converter on the pre-amplifier board. To ensure that the
analyzer measures only the light coming from the LED, the analyzer should be supplied with zero air. The optic
test should produce a PMT signal of about 2000±1000 mV.
Access the Optic Test from the DIAG Menu (refer to Figure 6-17), then press:
DIAG SIGNAL I / O
PREV NEXT JUMP ENTR EXIT
DIAG OPTIC RANGE = 500.000 PPB SO2=XXX.X
<TST TST> EXIT
Press NEXT until…
DIAG OPTIC TEST
PREV NEXT ENTR EXIT
Press TST until…
DIAG ELEC PMT = 2751 MV
SO2=XXX.X
<TST TST> EXIT
While the optic test is
activated, PMT should be
2000 mV ± 1000 mV
Figure 6-30: DIAG – Optic Test
NOTE
This is a coarse test for functionality and not an accurate calibration tool. The resulting PMT signal can
vary significantly over time and also changes with low-level calibration.
04515F DCN6048