Honeywell MultiRAE Series User Manual page 84

7. A countdown screen appears. You can abort the Bump test at any time during the
countdown by pressing [N/-].
8. If the Bump test is not aborted, the display shows the sensor names and tells you
whether the Bump test passed or failed, followed by the sensor readings.
Cal. Reference
It is sometimes desirable to calibrate a sensor (PID for VOC, and LEL) with a specific gas for
best response to a gas you are surveying. The Cal. Reference library contains calibration curves
for the PID and LEL sensors for select gases. Choose the sensor, and then select from the list
of reference gases.
Change Cal. Gas
You can change the calibration gas for the MultiRAE's PID and LEL sensors. Select from a
custom list that you create (My List), the last ten gases used, the built-in gas library for your
PID lamp, and user-defined custom gases. Each gas is shown in the list for selection and the
screen automatically changes to show its full name, chemical formula, molecular weight (M.W.)
and correction factor (CF).
Multi Cal Select
This menu allows you to define a group of sensors to be bump tested and span calibrated
together. Simultaneous testing and calibration of multiple sensors shortens the bump test and
calibration processes and reduces the number of individual gas cylinders you need. For
example, it may be more efficient to use a single cylinder with a four-gas mix including 50%
LEL Methane, 18% O
sensors at one time, compared to using four distinct gas cylinders and calibrate these sensors
individually in sequence. In order for sensors to be calibrated together, all of them must be
selected using Multi Cal. Select.
1. Scroll down the list of sensors using the [N/-] key.
2. Add or remove that gas from the list by pressing [Y/+]. An "X" in a box to the left of a
sensor's name indicates it is selected.
3. Once you have made all your selections, press [MODE] for "Done."
Honeywell MultiRAE Series™
, 10 ppm H S, and 50 ppm CO, to calibrate the LEL, O
2 2
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, CO, and H S
2 2
User Manual