Instructions

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Confirm with ENTER. The following screen will appear:

PROBES CALIBRATION

CO CALIBRATION

CAL ZERO

Cal zero 0 ppm

<ESC> exit/cancel

<ENTER> confirm

• Wait about 15 minutes before continuing.

• Supply the gas adjusting the bottle flow meter to get a constant flow from 0.1 to 0.2 l/min.

• Press ENTER and wait the two minutes necessary for calibration without changing the

working conditions.

• At the end, close the bottle spigot and remove the cap from the CO sensor.

• Insert the protection grid.

Sensitivity of the CO sensor:

The sensitivity in nA/ppm of the CO sensor is already set at the factory. If you need to chage it,

follow this procedure:

1. Use the arrows ▼▲ to select the 2) Calibration CO item:

PROBES CALIBRATION

1) Calibration CO

2) Calibration CO

3) Calibration RH

▼▲ select

<ESC> exit/cancel

<ENTER> confirm

2. Confirm with ENTER. The following screen will appear:

PROBES CALIBRATION

CALIBRATION CO

1) Cal zero

2) Set sensitivity

▼▲ select

<ESC> exit/cancel

<ENTER> confirm