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Intended use
The device is intended solely for measurements on
vehicles with 6 V, 12 V or 24 V on board voltage.
The user alone is responsible for damage
resulting from improper use.
Measurement categories
The following measurement categories are defined
according to standard EN 61010-1:
Measurement category CAT II
Measurements on circuits that have a direct connec-
tion via a plug with a low voltage network. Typical
short-circuit current < 10 kA.
Measurements on circuits directly electrically con-
nected to the mains via plugs in domestic, office and
laboratory applications.
Measurement category CAT III:
Measurements performed on the mains installation
of a building (stationary consumers with non-plugga-
ble connection, connection to the distribution board,
built-in devices in the distribution board). Typical
short-circuit current < 50 kA.
Measurements on building wiring installations:
Fixed installations, distribution boards, devices per-
manently connected to the distribution board.
Measurement category CAT IV:
Measurements on the source of the low voltage
installation (meter, main connection, primary over-
current protection). Typical short-circuit current >>
50 kA
Measurements on the source of the low voltage
installation:
meter, primary overcurrent protection, main
connection.
Device elements
Overview [Fig. I]
1 LCD
2 Zero point comparison (REL)
3 HOLD-key / backlight
4 Cylinder selection (CYL)
5 COM jack (ground)
6 V/Ω input jack
7 20 A measuring jack
8 mA measuring jack
9 Selection switch
10 Selection button (Select)
11 RAN button
12 HZ/% button
Operation
Direct current measurement
▸
Set the selector switch [9] measuring range to
V
.
▸
Plug the black measuring lead into the COM jack [5].
▸
Plug the red measuring lead into the V/Ω input
jack [6].
▸
Connect the measuring leads to the test object.
The multimeter automatically searches for the most
3
favourable measurement range.
The instantaneous measured value and its polarity
3
are output to the display [1].
Measuring tolerances
Accuracy specification in ± (% of the
reading (= rdg) + indication error in dig-
its (=d = number of the smallest digits)).
DC voltage
Measuring
Resolution
range
400 mV
0.1 mV
4 V
0.001 V
40 V
0.01 V
120 V
0.1 V
Input resistance: 10 MΩ.
Overvoltage protection: 120 V
Accuracy
± 0.5 % rdg + 4 d
RMS
17
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