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15 Alarms Overview
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.
15.1 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.
15.2 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.
