9
Change of polarity:
Change of polarity is required if galvanic voltages may interfere with the
measurement result.
⇒
After measurements with positive polarity: Press the
+/-
button (
-1
and
green LED indicate readiness for operation with different polarity).
Proceed the same way for measurements with negative polarity.
If the values significantly differ from another, galvanic voltages may be
present.
Repeat both measurements. If the results are similar to those taken
before, the mean value b and – must be assumed.
4.6 Automatic measurements
Automatic measurements are only suited for resistance measurements
< 10
Ω
.
They are always performed with a
measuring current of 200 mA
(tests
comply with VDE 0413).
⇒
Keep
+/-
button pressed until the POL +/- LEDs quickly light up and
"Auto"
is displayed
.
⇒
Shortly press the button to start the automatic measurement.
⇒
The measurement takes about 3 seconds;
change of polarity is
performed automatically.
⇒
After the measurement, you may change between the lowest resistance
value with + and – polarity by pressing the
+/-
button. The measurement
results are stored until the next measurement. Shortly press the
button to perform a new measurement.
⇒
To switch back to the standard measurement, press the
+/-
button until
the POL +/- LEDs quickly light up and “Auto” disappears.
