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2-15

OPERATION

2.6 ALARMS RESET OR ACKNOWLEDGE

When the instrument detects an alarm set point has been

reached, the audible, visual and vibrating alarm will be

activated to alert the user.

The alarms are individually programmable to be either

Latching, (i.e. alarm will stay on until the user resets by a

press and hold of the Right Hand (RH) button when

the gas reading has returned within the preset alarm limits),

or Non-Latching (i.e. the audible and visual alarm will reset

automatically when the reading returns within the preset alarm

limits). Refer to Alarms Table, Chapter 4, for individual alarms.

Note: Default alarms are set in accordance with current

international standards.

The audible alarm on each pre-set alarm can be muted for a

period of 60 seconds by a press and hold of the Right Hand

(RH) button . After this period, should the gas value

remain outwith the pre-set alarm limit, the non-latching audible

alarm will become active again. If latching, the audible alarm

will become active again regardless of gas value.

2.6.1 Condence Signal

During normal operation, the instrument sounds a condence

beep and illuminates the green LED’s briey every 15 seconds.

This function makes the user aware that the instrument is

operating correctly:

Note: The condence beep and / or LED’s can be disabled.

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GMI PS241 Specifications

General