PROGRAMMING THE AREARAE
4-10
4.4.3. Multiple-Sensor Calibration
This function simultaneously determines the second point of
calibration curve for multiple sensors in the monitor. Mixed
standard reference gases are needed to perform this
procedure. You may choose several gas mixtures to be used in
multiple-sensor calibration.
1. Continuing from Step 4 of the previous section, “Multiple
Sensor Calibration?” is the next display. Multiple-
component calibration gas mixtures are available for a
number of common AreaRAE sensor configurations. Press
[Y/+] to continue if a multi-component gas is being used to
calibrate instrument. The display asks you to verify which
sensors will be calibrated using the multi-component
mixture. Press [Y/+] to continue, or [N/-] to change the
choice of sensors to be adjusted.
TOX1
VOC
TOX2
CO
- - -
H2S
LEL OK?
- - -
LEL
OXY
TOX1
VOC
Gamma
CO
- - -
Gmma
LEL OK?
- - -
LEL
OXY
AreaRAE
AreaRAE Gamma
2. Press [Y/+] to continue, and the instrument asks you to
apply gas to the sensors. Connect the Luer fitting on the
calibration gas adapter to the inlet of the AreaRAE Steel.
Leave the External Filter in place during calibration.
3. Turn the regulator valve on to start the flow of gas. When
the calibration gas has reached the sensor, the display
shows “calibration in progress… 60,” and the countdown
timer shows the remaining seconds while the monitor
calibrates. When the countdown timer reaches 0, the
display shows the name of each sensor, the message
“cal’ed!” and the calibrated values for each gas. If the
sensor does not detect any gas after 60 seconds, the
display shows “No gas flow…” and aborts calibration.
