Clear button
By briefl y pressing the C
♦
recent action.
Repeatedly pressing the C
♦
the display
Belt pouch
Use the supplied belt pouch to protect the device when not in use.
Faults
If a measurement or a result is faulty, this is indicated by "Er nnn"
in the display and a long beep. The possible causes for this are:
Faults
Possible cause
101
Batteries are weak
104
Calculation error
Operating tempera-
152
ture too high
Operating tempera-
153
ture too low
Measurement out-
154
side the measure-
ment range
Received signal too
155
weak
PLEM 50 A1
button you can reset the most
OFF
button will delete the content of
OFF
in the following order:
Rectifi cation
Replace the batteries
Repeat the process
Please note the correct operating
temperature
Keep within the maximum measur-
ing range of the device
Avoid non-refl ective or poorly
refl ecting surfaces
Find a measurement point that is
more refl ective
.
17
GB
IE