User Manual

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14. Alarms Overview
The MicroRAE provides an unmistakable five-way alarm notification system that combines local
alarms on the device with real-time remote wireless alarm notification to enhance worker. Local
alarms include audible buzzer alarm, visible alarm via bright LED lights, vibration alarm, and an
alarm notification on the display. These can be programmed or selectively turned on or off.
14.1. Alarm Signals
During each measurement period, the gas concentration is compared with the programmed alarm
limits for Low, High, TWA and STEL alarm. If the concentration exceeds any of the preset
limits, the alarms are activated immediately to warn both the MicroRAE user and a remote safety
officer (if wireless is enabled) of the alarm condition.
In addition, the MicroRAE alarms if the battery voltage is low.
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 charge the battery in a non-hazardous
location.
Note: The default setting for the alarms is “unlatched.” To change this to latched mode, you must use
ProRAE Studio II software.