User Guide

Teledyne API M100E Analyzer Operation Manual Operating Instructions
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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