© PCE Instruments
5
4
Operation
4.1
On / off
On
To switch on the meter when it is switched off, press and hold the centre key
for about 3
seconds. The meter starts with a 120-second warm-up phase.
Off
To switch off the meter when it is switched on, press and hold the centre key
for approx. 3
seconds.
4.2
Temperature
Press and release the
key to switch between the temperature units °C and °F.
4.3
Alarm
When 1000 ppm of CO
2
is reached, the unit switches to alarm mode.
This is indicated by means of an acoustic and a visual alarm.
Visual alarm:
The display background flashes red every second.
Audible alarm:
The beep sounds every second. To switch the acoustic warning off or on, press and hold the
key for about 3 seconds.
4.4
Measurement mode
Press the
MODE
key to switch between the different measurement modes. (see 2.4)
Press and hold the
MODE
key to delete the minimum, maximum and average values.
4.5
Backlight
When the meter is switched on, press the central key
to switch the backlight on or off.
4.6
Automatic power-off
The unit switches off after 2 hours of inactivity (no operation by pressing a key) in battery mode.
This function is not active during mains operation. The unit then remains permanently switched
on.
4.7
Charging the battery
Fully charge the device using the USB cable supplied before using it for the first time.
Recharge the device when the battery status indicator shows
the flat battery icon
.
For example, use a USB plug-in mains adaptor (not included) with at least 1 A output power or
use a USB port on a PC that provides this power.
