Page 5
Restore
Defaults
Menu
Exit
Press the <SAVE> key to restore calibration to original factory settings.
Press <SAVE> to exit the menu and return to normal operation or <MENU> to
repeat the menu.
<MENU>
Press to advance to next menu item
12. RESTORE DEFAULTS
13. MENU EXIT
Only if
Viewable LCD
option Installed
BackLite
Enable
Use the <ROLL> key to enable or disable the LCD backlight. When enabled the
backlight is always on, when disabled it never lights. Press the <SAVE> key to
save the setting. The factory default is Enable.
11. BACKLIGHT
<MENU>
Press to exit the menu and return to normal mode
CALIBRATION
Calibration with gas requires a field calibration kit with pressure regulator, necessary tubing and
appropriate bottles of CO
2
gas.
The dual-channel sensor with extended range requires a 3-point calibration with 0, 1000 and 20,000
ppm gas (in order).
0 PPM CALIBRATION
Turn the regulator knob off and attach it to the Nitrogen gas bottle and hand tighten. Remove the cover
of the unit to be calibrated to expose the gas sensor chamber. The tubing from the gas bottle can be
connected to either port on the chamber after the plastic cap is removed. Gently remove one cap and
connect the tubing, note that strong shock or vibration can affect calibration.
Ensure the device has been operating normally for at least five minutes before applying gas. Turn the
valve knob on the regulator to start the gas flow. The regulator will restrict the flow rate to the specified
100 ml/min. After a brief period the gas will flow into the chamber. Wait 1 to 2 minutes until the CO
2
reading stabilizes.
Enter the Setup menu and use the <MENU> key to advance to Calibrat 0 PPM. Press and hold the
<SAVE> key for 2 seconds and the display will change to Waiting Calibrat then to Waiting 5 minute to
indicate that the process of setting the internal calibration is taking place.
This takes about 5 minutes while the LCD counts down. Do not disturb the unit or the gas flow. When
complete the unit will display the ppm value and Cal Done. Press the <SAVE> key to return to normal
operation and shut the gas off.
This item is used for 20,000 ppm gas calibration and is explained in the Calibration
section.
Calibrat
20000 PPM
<MENU>
Press to exit the menu and return to normal mode
10. CO
2
CALIBRATION
Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: +1 506 853 3057 Web: www.greystoneenergy.com
IN-GE-CDD4B1XXX-01 05/20
