AirLink 6940XP Operator’s Manual
Sensor Settings and Calibration
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38
Procedure
1. If you are calibrating with EtO calibration gas, connect the tubing to the regulator, turn the
regulator on, and allow gas to flow for 1 minute before proceeding.
If you are calibrating with HCl calibration gas, connect the tubing to the regulator, turn the
regulator on, and allow gas to flow for 10 minutes before proceeding.
2. 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.
3. Press and release
ADD
until the “Cal” menu item appears.
4. Press
MENU
to select the Calibration menu item.
5. Unscrew and remove the rain guard from the assembly.
6. Install the calibration cup to the AirLink 6940XP’s sensor housing.
7. Use the sample tubing to connect the regulator to the calibration cup.
Table 3: Surrogate Calibration Gases
Detected Gas
Surrogate Calibration
Gas
Factor
Arsine (AsH
3
)
Phospine (PH
3
)
1.4
Chlorine Dioxide (ClO
2
)
Chlorine (Cl
2
)
1
Formaldehyde (CH
2
O)
Carbon Monoxide (CO)
0.2
Hydrogen Fluoride (HF)
Chlorine (Cl
2
)
7.5
Ozone (O
3
)
Chlorine (Cl
2
)
0.8
Nitrogen Dioxide (NO
2
)
1
