PROGRAMMING OF MULTIRAE
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4.4 Calibration of MultiRAE PLUS Monitor
CALIBRATION WARNINGS:
The calibration of all newly purchased RAE Systems
instruments should be tested by exposing the
sensor(s) to known concentration calibration gas
before the instrument is used or put into service.
For maximum safety, the accuracy of the MultiRAE
PLUS should be checked by exposing the sensor(s)
to known concentration calibration gas before each
day’s use.
In programming mode, the user may re-calibrate the sensors
in the MultiRAE PLUS monitor. This is a two -point
calibration process using “fresh air“ and the standard
reference gas. First, a “fresh air” which contains 20.9%
oxygen and no detectable VOC, toxic or combustible gases
is used to set the zero point for each sensor. Then a standard
reference gas, which contains a known concentration of a
given gas, is used to set the second point of reference (also
known as span gas). The two -point calibration procedure is
detailed below. Table 4.3 shows the sub-menus for
calibration operations.
Table 4.3
