User Manual

7
2. USE IN STAND-ALONE MODE
The instrument can operate in two modes:
•
the stand-alone mode described in this section,
•
the record mode, in which it is controlled by a PC. This mode is described in the next section.
2.1 INSTALLING THE BATTERIES
See §5.2.
2.2 SWITCHING THE DEVICE ON
2.3 SWITCHING THE DEVICE OFF
2.3.1 Manual switching off
Manual switching off is blocked if a programmed recording session (P_REC) is in progress.
2.3.2 Automatic switching off
In the portable mode, the device switches itself off automatically after 15 minutes of inactivity.
Automatic switching off is de-activated in the other modes (1D or 3D, ECO, P_REC), and in the MIN MAX and M_REC
functions, if the Bluetooth or USB link is active or if the device is connected via the USB mains adapter.
2.4 MAKING A MEASUREMENT
When the device is switched on, CO2 is displayed during the wait for the first measured of CO
2
value; access to the keys is
disabled until this first value is displayed on screen. The measurements are then displayed automatically on screen.
If the device is exposed to large variations of temperature, after the temperature stabilizes, wait 20 minutes before
starting the measurements.
The device has 4 operating modes:
 The portable mode,
 The 1D and 3D modes
 The ECO mode
 The P_REC mode