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11 Calibration And Testing
11.1 Manual Alarms Test
Under Normal Operation Mode and non-alarm conditions, the buzzer (audible alarm), vibration, visible
alarms, and backlight can all be tested anytime by pressing [Y/+] twice. If any alarm does not respond,
check the alarm settings in the Programming Menu to make sure all alarms are enabled (selected setting
under Programming/Alarms/Alarm Settings should be “All Enabled”). If any alarms are enabled but not
functional, the instrument should not be used.
11.2 Bump Testing And Calibration
RAE Systems recommends that a bump test be conducted prior to each day’s use. The purpose of a bump
test is to ensure that the instrument’s sensors respond to gas and all the alarms are enabled and functional.
The MultiRAE multi-gas detector must be calibrated if it does not pass a bump test when a new
sensor is installed, after sensor maintenance has been performed, or at least once every 180 days,
depending on use and sensor exposure to poisons and contaminants.
Calibration and bump test intervals and procedures may vary due to national legislation and
company policy.
A bump test or calibration can be performed either manually or using the AutoRAE 2 Automatic Test and
Calibration System. When a bump test or calibration is done manually, the instrument makes a pass/fail
decision based on sensor performance, but the user still has the responsibility to make sure all the alarms
are enabled and functional.
An AutoRAE 2 bump test or calibration takes care of both the sensor and alarm tests. Consult the
AutoRAE 2 User’s Guide for details.
11.2.1 MultiRAE Equipped With A Pump
With its pump speed setting of low or high, a MultiRAE normally draws in air at a flow rate of between
200 cc/min and 300 cc/min. RAE Systems recommends that a calibration adapter used with calibration
gas flow rates from 500 cc/min to 1000 cc/min.
Installing The Calibration Adapter
WARNING:
Make sure the calibration adapter clips on and stays in the correct position during
calibration, as illustrated below. Otherwise, the calibration adapter must be manually held in the correct
position.
Wrong Wrong Wrong Correct
