Teledyne Operation Verification M100AH Diagnostic Techniques, Test Functions, 10-3

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

10.1Operation Verification - M100AH Diagnostic Techniques

10.1.1Fault Diagnosis with TEST Variables

The Table 10-1indicates possible fault conditions that could cause the TEST functions to be outside the acceptable range.

Table 10-1: Test Functions

Test Function	Factory Set-Up	Comment
RANGE	500 PPM	This is the Range of the instrument. In standard configuration
		all 2 outputs have the same range.
		Dual range option allows different ranges for each output.
		When enabled, there will be 2 range values displayed (low
		range and high range).
		Auto range option allows 2 different ranges for each channel,
		and will automatically switch to the other range dynamically
		as concentration values require. The TEST values will show
		the range in which the instrument is currently operating, and
		will dynamically display the alternate range as the range
		changes occur.
STABIL		The instrument stability is computed for 25 samples with 10
		seconds default interval time. The stability value should be
		compared to the value observed in the factory check-out.
		During normal sampling, this value will be changing
		depending on the sample concentration variation.
		Faults that cause high stability values are:
		1.	Pneumatic leak
		2. Low (below 600 mV) or very unstable UV lamp output
		3.	Light leak
		4. Faulty HVPS
		5.	Defective Preamp board (02107)
		6.	Aging detectors
		7.	PMT recently exposed to room light
		8.	Dirty/contaminated reaction cell

(table continued)

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