Teledyne 100AH Fault Diagnosis with Warning Messages, Front Panel Warning Messages, 10-9

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

10.1.2 Fault Diagnosis with WARNING Messages

The M100AH monitors several internal values for alarm conditions. If the condition for an alarm is met, the alarm is displayed on the front panel and the warning is transmitted out the RS-232 port. Any time the instrument is powered up the SYSTEM RESET alarm will be displayed. Generally, it is ok to ignore warnings that are displayed shortly after power-up; only if they persist should they be investigated.

Table 10-2shows the warning messages and gives some possible causes.

Table 10-2: Front Panel Warning Messages

Message	Description
SYSTEM RESET	Analyzer was reset/powered on. This warning occurs every time the
	instrument is powered up, as in a power failure. It can also occur if
	the RAM or EEPROM is reset.
RAM INITIALIZED	RAM was erased. The RAM contains the DAS averages which get
	erased when the RAM is initialized. It also contains temporary data
	used by the M100AH to calculate concentrations. No setup
	variables are stored in the RAM.
PMT DET WARNING	The PMT output above 4995 mV. The Preamp circuit could be out
	of adjustment or wrong range selected.
UV LAMP WARNING	The UV lamp output is below 600 Mv or above 4995 Mv. UV lamp
	could be aging or need to peak output by adjusting the position.
	Also beam splitter out of alignment will cause to read lower.
DARK CAL WARNING	Dark PMT or UV lamp reading is above 400 mV.
HVPS WARNING	The HVPS control voltage is above 900 V or below 400 V. The
	Preamp circuit could be out of adjustment or the PMT sensitivity is
	too weak.
SAMPLE FLOW	The measured sample flow is outside the hi/low limits. A Leak in
WARNING	the pneumatic system is the main cause of the warning although the
	flow sensor itself could be the cause.
SAMPLE PRESS	The sample pressure is below 15”Hg or above 35”Hg.
WARNING

(table continued)

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