Teledyne T200, Operation Manual, Page: 124 / 425

Setup Mode Menus Teledyne API
– T200 NO/NO
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/NO
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Analyzer Operation Manual
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5.9.5. 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. The analyzer uses the light emitted from the
LED to test its photo-electronic 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.
Section 12.7.12.1 presents instructions for use in troubleshooting and service.
I
MPORTANT
I
MPACT ON
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EADINGS OR
D
ATA
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.
5.9.6. ELECTRICAL TEST
The ELECTRICAL TEST function creates a current, which substitutes the PMT signal,
and feeds it into the preamplifier board. This signal is generated by circuitry on the pre-
amplifier board itself and tests the filtering and amplification functions of that assembly
along with the A/D converter on the motherboard. It does not test the PMT itself. The
electrical test should produce a PMT signal of about 2000 ±1000 mV.
Section 12.7.12.2 presents instructions for use in troubleshooting and service.
5.9.7. OZONE GEN OVERRIDE
This feature is used to manually turn the ozone generator off and on. Read Section
13.2.3 to understand the ozone generator, and refer to Section 12.7.15.1 for instructions
on using the override feature in troubleshooting and service.
5.9.8. FLOW CALIBRATION
This function is used to calibrate the gas flow output signals of sample gas and ozone
supply. Section 9.7 presents instructions for flow calibration. Used to adjust the gas flow
calculations made by the CPU based on pressure and flow sensor readings.
06858E DCN7057