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4-13

ALARMS

Fig. 4-12 Flow Fault

4.5.6 Calibration Required

If the instrument requires calibration then during warm-up, a

‘CALIBRATION OVERDUE’ warning is displayed. The

instrument will operate using its previous calibration settings,

however, as the sensors response may have diminished, the

instrument should be recalibrated and tested.

Fig. 4-13 Calibration Overdue

Press the Right Hand (RH) button once to

acknowledge that calibration due date is overdue, cancel the

audible / visual alarm, and continue to the next display. A

‘CAL EXPIRED’ warning, red backlighting and red LED’s will

flash every 30 seconds.

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General

Display	LCD
Alarm Type	Audible, visual, and vibration alarms
Resolution	Depends on the gas being detected
Accuracy	Varies depending on the gas and sensor. Consult the specific sensor datasheet.
Operating Temperature	-20°C to +50°C
Power Supply	Rechargeable Li-ion battery
Pump Type	Built-in sample pump