AirLink 6940XP Operator’s Manual
Sensor Settings and Calibration
•
48
Calibration Method
NOTE:
LEL and CO
2
- This screen does not appear in LEL or CO
2
versions of the AirLink
6940XP because those sensors can only be calibrated using Auto Cal.
HCl - It is recommended that the HCl version only be calibrated using Auto Cal, but
Manual Cal can be used if desired.
AsH
3
and HF - It is recommended that AsH
3
and HF versions only be calibrated using
Manual Cal.
O
2
- If calibrating with 100% N
2
, you must use Manual Cal. To calibrate using Auto
Cal, a gas concentration between 10 and 18% O
2
is recommended.
The calibration method selection affects the way the sensor element is calibrated.
Manual Calibration (factory setting): The reading can be entered manually by pressing and
release the
ADD
or
SUB
buttons during calibration to match the on-screen reading to the value of
the gas being applied (see page 37).
Auto Calibration: Sets the reading, after a predetermined amount of time, to the value entered
during the auto calibration setup process (see page 40).
1. If necessary, enter the Product Settings and Configuration menu by pressing and holding
MENU
for approximately 6 seconds.
Press and release
ADD
or
SUB
to navigate to the desired sensor settings menu, then press
MENU
to select the menu.
2. Press and release
ADD
until the Cal Method menu item appears. Press
MENU
to select the
“Cal Method” menu item.
3. Use the
ADD
and
SUB
buttons to cycle between manual calibration and auto calibration.
4. Press
MENU
or
BACK
to save the calibration method and return to the Sensor Settings
menu.
