Ametek 933S, Operator'S Manual

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4-66 | Model 933S UV Analyzer
Wheel Speed (rpm)
The current Optical Bench Chopper (Filter) Wheel speed in revolu-
tions per minute (RPM).
Remote AZero
The current status of the remote, dry (potential free) contact, either
OFF (closed) or ON (open). When start is displayed, the remote auto-
zero function has been initiated from a remote control room, such as a
Distributed Control System.
Warning Relay
The current status of the Warning Status relay. When the analyzer is
operating in its Normal Run state, this relay is energized. This relay
is de-energized if a Warning alarm condition exists within the ana-
lyzer’s built-in diagnostic system (the analyzer requires attention). The
Warning contacts will also become de-energized if you manually force
the analyzer’s Flow Control Mode to any mode other than Analyzer
(
auto ) Control. When not in the Normal state , this field has a Red back-
ground.
Resetting of the contacts is delayed by the Sample Delay Timer dura-
tion; otherwise, this relay’s contacts reset automatically upon correc-
tion of the
Warning alarm or upon switching back to Analyzer Control
Mode.
Fault Relay
When the analyzer is operating in its Normal Run state, this relay is
energized. This relay is de-energized if a Fault alarm condition exists
within the analyzer’s built-in diagnostic system (the analyzer requires
service). When not in the
Normal state , this field has a Red back-
ground.
When a Fault alarm condition exists (relay is de-energized), the sample
system Flow Control mode will automatically switch to “ zero ” mode
if the analyzer’s Flow Control Mode is set to “ auto ” (Analyzer Control
Mode).
If the relay is configured to latch (default) it will not clear unless you
manually reset the alarm; if not, it will reset automatically upon cor-
rection of the
Fault alarm.
Whenever a Fault alarm condition exists, the text on the Display mes-
sage lines on the Optical Bench , Sensors , Gas Calibration , and Infor-
mation dialog boxes will turn Red to indicate a fault status.