Zero sensors

Zero sensors

Before you begin.

Connect the Nitrogen if this is a CO2 unit.

1. Go to the main menu and select Zero Sensors.
2. Press and hold for 3 seconds.
   A Zeroing process starts automatically.
   The screen displays all current gas measurements, highlighting entries above zero.
   Ambient air is applied to zero all sensors that are not CO2.
   The screen displays all current gas measurements, highlighting entries being reset to zero.
3. If you are not zeroing O2, Click NO in the prompted message: Is this a CO2 unit? .
   Zero results are displayed.
   Press the button or wait for six seconds to end the Zeroing process.
4. Click Yes if this is a CO2 unit and you want to apply Nitrogen to zero CO2.
   A two minutes gas measure process starts automatically.
   All current gas measurements and entries reset to zero are displayed.
5. Turn off the gas following on-screen instructions. Zero results are displayed.
6. Press the button or wait for six seconds to end the Zeroing process.

Zero results are displayed as follows:

• A check mark for sensors that passed Zero
• A cross mark for sensors that failed Zero
• An exclamation mark for sensors that skipped Zero