6-58 | Model 931S / Model 932S UV Analyzers
Decimal Alarm
Bit Value Type Alarm Condition / Description and Suggested Corrective Action
2 4 Warning w: Cell temperature out of range
The Measuring Cell temperature has exceeded its Too Hot setpoint or has fallen
below its Too Cold setpoint, or the Measuring Cell temperature range is not set
properly.
Note: This alarm is used only by analyzers equipped with an unheated
Measuring Cell.
Corrective Action:
From the Temperature Control dialog box, check the Cell Too Hot and Too
Cold setpoints. Also, check the Cell temperature Range; it should be set to
Range “A” (-3 °C to 66 °C). See “Temperature Control” in Chapter 4.
Perform the following checks:
• Check the ambient temperature around the analyzer; if it is higher than the
Too Hot setpoint or lower than the Too Cold setpoint, adjust the surrounding
temperature to within the Cell temperature measuring Range.
Take appropriate safety precautions, open the Upper Enclosure, and:
• Check the jumpers at JP300 on the Micro-Interface board for proper
temperature range setting. The typical default jumper setting is Range “A”
(jumpers 1-2). See “Temperature Control” in Chapter 4.
• Check the Measuring Cell RTD (Upper Enclosure, see Figure 6-1) for a short
or an open circuit. Replace the RTD, if necessary. Contact AMETEK to verify
operation before removing this component.
• Replace the Micro-Interface board. Contact AMETEK to verify operation
before removing this board.
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