PROGRAMMING
4-5
4.4 Calibrate and Select Gas
CAUTION 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 put into service for the first time.
For maximum safety, the accuracy of the MiniRAE
2000 should be checked by exposing it to known
concentration calibration gas before each day’s use.
In the first menu of the programming mode, the user can
perform functions such as calibration of the MiniRAE
2000 Monitor, select default cal memories, and modify cal
memories (see Table 4.4).
Table 4.4
Calibrate/Select Gas Sub-Menu
Fresh Air Cal?
Span Cal?
Select Cal Memory?
Change Span Value?
Modify Cal Memory?
Change Correction Factor?
Calibrating the MiniRAE 2000 monitor is a two-point
process using “fresh air “ and the standard reference gas
(also known as span 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
