12
Returning to Normal Operating Mode Following a High Alarm
When a High Alarm has been triggered, the audio alarm cannot be silenced and the
alarm icon cannot be removed form the display screen by pressing the green power
button. To remove the alarm following a High Alarm, the unit must be moved to a
clean-air location and power must be cycled (see the Power Off / Power On sections of
this operation manual).
Indication of Peak Value and STEL / TWA Value
When a STEL (Short Term Exposure Limit) / TWA (Time Weighted Average) Alarm
has been triggered, it is indicated with the
or
icon (respectively), value of
the measured gas, an LED notification, audible alarm and vibration.
To remove the alarm following a STEL / TWA Alarm, the unit must be moved to a
clean-air location and power must be cycled (see the Power Off / Power On sections of
this operation manual).
NOTE: All alarm values are set according to the alarm standard of gas (that is
required by international standards). Therefore, alarm values can be changed
only under the responsibility and approval of the administrator of the work site
where the instrument is used.
The maximum value, STEL value, and TWA value will be displayed consecutively
while in Gas Measure Mode.
Battery Notifications
When the battery level is low (one bar remains on the battery icon), an alarm will sound
repeatedly at five minute intervals. When the battery is nearly exhausted, a unique
combination of audible, LED, and LCD backlight alerts will display for approximately 10
seconds (before the unit turns off completely).