9. Re-connect or enable all equipment and alarm devices connected
to any control equipment monitoring the Chillgard LS
Refrigerant Monitor.
10.Reinstall the light gray cover.
Do not leave any alarm device or equipment disabled or disconnected
during normal operation of the instrument; otherwise, the instrument will
not function as intended when it detects an alarm situation.
Four-Point Pumped Version Calibration
Introduction
As with any type of gas monitor, the only true check of its performance
is to apply gas directly to the sensor.The frequency of the calibration
gas test depends on the operating time and exposures of the sensors.
New monitors should be calibrated more often until the calibration
records prove stability. The calibration frequency can then be reduced to
the schedule set by the safety officer or plant manager.
Perform the calibration procedure regularly and maintain a log of
calibration adjustments. Calibration frequency may increase for a variety
of reasons. If calibration cannot be performed at any step, STOP;
consult MSA at 1-800-MSA-INST.
Calibration Equipment
Equipment needed:
• Calibration Kit (MSA ATO #50; FIGURE 4-3)
• A SPAN gas cylinder
• Optional ZERO gas cylinder.
• A ZERO gas cylinder may not be needed.
"
CAUTION
4-6
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