PROGRAMMING AREARAE-Gamma
4-9
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. The user may choose several gas mixtures to be
used in multiple sensor calibration.
1. Continuing from Step 4 of previous section, “Multiple
Sensor Calibration?” is the next display. Multiple
component calibration gas mixtures are available for a
number of common AreaRAE-Gamma sensor
configurations. Press [Y/+] to continue if a multi-component
gas is being used to calibrate instrument. The display will
ask user to verify which sensors will be calibrated using the
multi-component mixture. Press [Y/+] to continue, or [N/-]
to change choice of sensors to be adjusted.
TOX1
VOC
Gamma
CO
- - - -
LEL
OK?
_ _ _
LEL
OXY
2. Press [Y/+] to continue, and the instrument will ask user to
apply gas to the sensors. Connect the Luer fitting on the
calibration gas adapter to the inlet of the AreaRAE-
Gamma. 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 will
show “calibration in progress… 60”, and the countdown
timer will show 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 will show “No gas flow…” and abort calibration.
