63 • Appendix D: Carbon Dioxide Sensors Eagle Instruction Manual
NOTE: If you are using the Auto Calibration method, go the
Calibration Values screen, verify that the carbon dioxide
value matches the concentration of carbon dioxide in the four-
gas calibration cylinder, then proceed with step 2.
1. At the Single Calibration screen, press the SHIFT/▼ button to
scroll down to the carbon dioxide channel, then press the
POWER/ENTER button.
2. Screw the regulator to the appropriate calibration cylinder.
3. Connect the tubing from the regulator to the Eagle’s probe. Allow
1 minute for the reading to stabilize.
4. If necessary, use the AIR/▲ (increase) and SHIFT/▼ (decrease)
buttons to adjust the carbon dioxide reading to match the
concentration listed on the calibration cylinder.
Go to the next section, “Adjusting the sensor potentiometers,” if
you are unable to match the reading to the concentration of the
calibration cylinder.
5. Press the POWER/ENTER button to set the span value. SINGLE
CALIBRATION END displays, then the Single Calibration menu
displays.
6. Disconnect the tubing from the probe, then unscrew the regulator
from the cylinder.
7. With the Single Calibration menu displayed, press the SHIFT/▼
button until the prompt is next to the last channel, then press the
SHIFT/▼ button again. The ESCAPE message displays.
8. Press the POWER/ENTER button to return to the Calibration
menu.
9. Press the SHIFT/▼ button to place the prompt next to the
NORMAL OPERATION menu option, then press the POWER/
ENTER button to return to the normal screen.
Adjusting the sensor controls
CAUTION:Only perform the following steps if you are unable to set the
correct calibration reading with the AIR/
▲
and SHIFT/
▼
buttons.
1. Use the AIR/▲ and SHIFT/▼ buttons to set the reading to the
middle of the range in which you can currently adjust the reading.
For example, if you can set the reading from a minimum of 1.00%
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