Teledyne 100AH instruction manual Electric Test, 10-16

Teledyne API Model 100AH SO2 Analyzer Instruction Manual, 02417, Rev. D

Table 10-4: Diagnostic Mode - Signal I/O (Continued)

No.	Signal	Control	Description
31.	HVPS_VOLTAG	NO	HVPS programming voltage. Output of HVPS is
			1000x value present.
32.	DAC_CHAN_0	NO	Output of SO2 (DAC0/RANGE1) in mV.
33.	DAC_CHAN_1	NO	Output of SO2 (DAC1/RANGE2) in mV.
34.	DAC_CHAN_2	NO	Output of spare (DAC2) channel in mV.
35.	DAC_CHAN_3	NO	Test Channel (DAC3) output.
36.	UVLAMP_SIGNAL	NO	Current UV lamp signal voltage in mV. Same as
			UV LAMP in TEST menu. Bi-polar, typically 0-
			5000 mV range. A constant value of 5000 mV
			indicates off scale.
37.	CONC_OUT_1	YES	DAC0 (SO2/RANGE1) analog output in mV.
38.	CONC_OUT_2	YES	DAC1 (SO2/RANGE2) analog output in mV.
39.	TEST_OUTPUT	YES	DAC3 (TEST CHANNEL) analog output in mV.

10.1.3.2 Electric Test

This function injects a constant voltage between the preamplifier and the buffer amplifier on the preamp board. Electric test checks part of the Preamp, the V/F and computer for proper functioning. The result of electric test should be a smooth quiet signal as shown by constant values for the SO2 concentration. Likewise the analog outputs should produce a smooth quiet trace on a strip chart (analog output range is set to 5000PPM and auto-ranging is disabled).

Procedure:

1.Scroll the TEST function to PMT.

2.Press SETUP-MORE-DIAG, scroll to ELECT TEST by pressing the NEXT button. When ET appears, press ENTR to turn it on.

3.The value in PMT should come up to 2000 mV ± 100 mV in less than 15 sec.

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