PROGRAMMING
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4.4 Calibration of the UltraRAE 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
put into service for the first time.
For maximum safety, the accuracy of the UltraRAE should
be checked by exposing the sensor(s) to known
concentration calibration gas before each day’s use.
In the programming mode, the user may re-calibrate the
UltraRAE monitor. This is a two-point calibration process
using “fresh air“ and a standard reference gas. First a “fresh
air” calibration, which contains no detectable VOC (0.0 ppm), is
used to set the zero point for the 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). Separate calibration must be performed for each type
of tube being used.
Note
: The span value must be set prior to calibrating for fresh
air or span.
Calibration Sub-Menu
Fresh air calib?
Span calib?
Modify span value?
Calibration Frequency
To achieve the highest level of measurement accuracy, it is
recommended that the monitor be calibrated once a day before
