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Sample Sequencer
Operation
defeats the purpose of the Sequencer's analog alarms and may make the Sample Sequencer go
into the Off mode erroneously.
The analyzer system alarm is annunciated by the Analyzer Alarm light on the Sequencer display
(see Figure 6). The light will remain on until the analyzer system alarm stops. This alarm is also
annunciated by the commutating normally-open alarm contacts on the optional Signal switching
output board and 0-1 VDC Signal output boards. After two minutes, the Sequencer will switch to
the next point. The dwell cycle is still active. The user should program the analyzer to go low or
high, as desired, upon analyzer system alarm.
During batch mode operation, the Sample Sequencer will initiate an analyzer system alarm if an
end-of-batch signal is not received before the end of the cycle time count down. The Sample
Sequencer will also turn off when this condition occurs.
If at any time the analyzer outputs a system alarm to the Sample Sequencer on eight consecutive
points (regardless of the number of sample points turned on), the Sample Sequencer will turn off,
terminate sampling and light the analyzer system alarm LED on the front display. This condition
implies a problem with the analyzer or sample streams exists and must be corrected before
sample sequencing may proceed.
SENTRY Equipment Corp • P. O. Box 127 • Oconomowoc, WI 53066 • 262/567-7256 • FAX: 262/567-4523
Web: www.sentry-equip.com • e-mail: sales@sentry-equip.com
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