Ametek 931S, Руководство оператора

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6-46 | Model 931S / Model 932S UV Analyzers

Setup (tab)

Temp
Control
Decimal Alarm
Bit Value Type Alarm Condition / Description and Suggested Corrective Action
2 4 Warning w: Probe temperature range
The probe temperature has exceeded its Too Hot setpoint.
Note: This alarm is used only by analyzers using an unheated sample probe
(not controlling the sample probe).
Corrective Action:
• From the Temperature Control dialog box, check the Probe Setpoint and
Too Hot setpoint. The Probe Setpoint should be 5 °C to 10 °C above the Too
Hot temperature.
Take appropriate safety precautions, and:
• Check the Probe RTD – inside the Probe Heater Assembly – for a short or
open circuit. Contact AMETEK to verify operation before removing this
component.
3 8 Warning w: Excessive zero drift
This condition indicates excessive Zero Drift, such as when Zero gas
transmission values attained after a Zero have exceeded user specified values.
Corrective Action:
• Perform a Zero. See Chapter 5 for calibration information.
•
From the Analyzer Data tab, check the Bench Temperature to ensure it has
stabilized.
• From the Status tab, check the HC Scode and MC Scode alarm lists for
alarms that indicate contaminated Measuring Cell, optics, and/or sample
system.
If necessary, clean the appropriate component(s) of the sample system that
require cleaning.
• From the Gas Calibration dialog box, ensure the ZCalDriftSpec values are
appropriate and have not been changed.
•
This condition may also indicate that the lamps need to be replaced, especially
if a “ w: ALC out of range ” alarm is also displayed on the Status tab (in the
MC Scode alarm list). See “Source Lamp Replacement” in this chapter.

Setup (tab)

Gas
Calibration