ANALOX Ax 50, Руководство пользователя

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Analox 50 – Carbon Dioxide Analyser – User Manual
Document Ref: A50-811-19 – September 2014
Page 19
Pre-alarm unit
If the Ax 50
TM
has a 0.5% pre-alarm and it detects a Carbon Dioxide
concentration which exceeds this first alarm level, then the red First
Alarm indicator will begin to flash but the Horn will not sound.
If the measured concentration of Carbon Dioxide continues to rise above
the second alarm level, then the red Second Alarm indicator will also
begin to flash and the Horn will sound. This condition will be repeated on
any Remote Alarm Repeaters. The alarms are self-cancelling when the
Carbon Dioxide level falls below the alarm limits.
If the measured concentration of Carbon Dioxide continues to rise above
the third alarm level, then the red third Alarm indicator will also begin to
flash and the pace of the Horn will increase. This condition will be
repeated on any Remote Alarm Repeaters. The alarms are self-
cancelling when the Carbon Dioxide level falls below the alarm limits.
Alarm 1
(Pre alarm)
Alarm 2
Alarm 3
6.1. Lamp and Alarm Test
Momentarily pressing the ‘Mode’ button on either the Ax 50
TM or any
Remote Alarm Repeaters, in the absence of any alarm conditions,
causes a lamp and alarm test to be performed. The indicator lamps will
flash 4 times, together with the alarm Horn. This test should be carried
out each time the area is entered.
Please note that the optional relays which may be fitted to the
instrument are NOT operated during this test. Therefore any lights or
sirens which may be connected to the instrument will NOT be tested
by this operation.