Honeywell MultiRAE Series User Manual page 81

Note: The gamma radiation sensor comes pre-calibrated from the factory and does not require
routine calibration. However, you can check it by placing a check-source on the rear of the
MultiRAE equipped with a gamma sensor to check the readings. There is a raised dot on the
rubber boot that marks where the sensor is located inside the instrument.
Calibration Process for MultiRAE Or MultiRAE Pro For Benzene Sampling
Calibrating the MultiRAE or MultiRAE Pro equipped with a 9.8eV lamp for benzene sampling is
similar to calibrating other MultiRAEs. Calibration is performed with isobutylene and benzene.
Make sure the target gas is the same as the calibration gas and that it is in the correct
concentration.
IMPORTANT!
The instrument must not have a RAE-Sep Tube Cartridge installed during calibration.
l
A filter must be attached to the inlet.
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The calibration adapter must be used for calibration with both gases (isobutylene and
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benzene).
Multi Sensor Bump
Depending on the configuration of your MultiRAE and span gas you have, you can perform a
bump test simultaneously on multiple sensors. Which sensors are bump tested simultaneously
is defined in the Multi Cal Select menu. Refer to section See "Menus and Submenus" on
page 70 for more information. for more information.
In case all sensors in the instrument cannot be calibrated with the same gas, the MultiRAE will
intelligently split the span calibration process into several steps and will provide menu prompts
accordingly.
1. At the Calibration Menu, select "Multi Sensor Bump."
2. Install the calibration adapter and connect it to a source of calibration gas.
3. Press [Y/+] to start bump or wait for bump test to start automatically.
4. Start the flow of calibration gas.
5. A countdown screen is shown. You can abort the Bump test at any time during the
countdown by pressing [N/-].
Honeywell MultiRAE Series™ 76 User Manual