The MultiRAE provides an unmistakable five-way alarm notification system that combines local
alarms on the device with real-time remote wireless alarm notification (if the instrument is
equipped with the optional wireless functionality) to take worker safety to the next level. Local
alarms include audible buzzer alarm, visible alarm via bright LED lights, vibration alarm, and an
alarm notification on the display. These can be selectively turned on or off.
Note: The vibration alarm is automatically disabled whenever the instrument is run on alkaline
batteries.
Alarm Signals
During each measurement period, the gas concentration and radiation levels are compared with
the programmed alarm limits for Low, High, TWA, STEL, and other alarms, as applicable. If the
concentration exceeds any of the preset limits, the alarms are activated immediately to warn both
the MultiRAE user and a remote safety officer (if wireless is enabled) of the alarm condition. In
addition to gas and radiation alarms, Man Down and other alarms are available.
Furthermore, the MultiRAE alarms if one or more of the following conditions occurs: battery
voltage low, pump blocked, PID lamp failed, etc.
When the low battery alarm occurs, there may be approximately 10 minutes of operating time
remaining. In this case, it is recommended that you promptly change or charge the battery in a
non-hazardous location.
Changing the Alarm Mode
Your choices are Auto Reset and Latched. A latched alarm stays on until you acknowledge the
alarm by pressing a button. An auto-reset alarm turns off when the condition that set off the
alarm is no longer present (for instance, a high H
2
S reading that exceeds the preset threshold
and triggers an alarm, but then lowers below that threshold, turning the alarm off).
1.Enter the Alarm Mode sub-menu of the Alarms section under the Programming Menu.
2.Select Auto Reset or Latched by pressing [N/-] to select, and [Y/+] to confirm the choice.
3.Press [Y/+] to save your selection.
Honeywell MultiRAE Series™ 149 User Manual
CHAPTER
15
Alarms Overview
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