14 | English 1 609 929 K82 • 17.1.07
When the battery indication a in the display lights up, measuring is
possible for approx. 1 h when using alkali-manganese batteries (serv-
ice life is shorter with rechargeable batteries). When the battery indi-
cation a flashes, measuring is still possible for approx. 10 minutes.
When the battery indication a and the illuminated ring 1 (red) are
flashing, measuring is no longer possible and the battery or the
rechargeable battery respectively, must be replaced.
f If the measuring tool is not used for a long period of time,
the battery must be removed. The battery can corrode or dis-
charge itself over long periods.
Operation
Initial Operation
f Protect the measuring tool against moisture and direct
sun irradiation.
Switching On and Off
f Before switching the measuring tool on, make sure that
the sensor area 5 is not moist. If required, wipe the measur-
ing tool dry using a cloth.
f If the measuring tool was subject to an extreme temper-
ature change, allow it to adjust to the ambient tempera-
ture before switching on.
To switch on the measuring tool, press the On/Off switch 4.
After a brief self-check, the measuring tool is ready for operation.
The operational readiness is indicated by a check mark behind the
“AutoCal” calibration indicator d.
To switch the measuring tool off, press the “on/off” button 4.
When no measurements are carried out for approx. 10 minutes, the
measuring tool switches off automatically in order to extend the serv-
ice life of the batteries.
OBJ_BUCH-308-001.book Page 14 Wednesday, January 17, 2007 9:55 AM