3B SCIENTIFIC PHYSICS E 1018832 Bedienungsanleitung Seite 8

used. Pay specific attention to the insulation
for the measuring sockets.

The multimeter may not be used to make
measurement on circuits which exhibit coro-
na discharge (high voltage).

Particular care is to be taken when making
measurements on high-frequency circuits
where dangerous voltages may arise due to
superimposition of components.

The authorised measuring range is not to be
exceeded. If measurements are made when
the magnitude of the variable is unknown,
always select a large measuring range be-
fore shifting down to lower ones.

Make very sure that the voltage value be-
tween the measured contact and earth or
between the ground socket and the meas-
urement socket does not exceed 600 V.

Before using the multimeter to check that a
voltage source is not exhibiting any actual
voltage, check that the meter is working
properly by selecting the battery test func-
tion.

When measuring current, make sure the
electricity is turned off before the multimeter
is connected into the circuit.

When making measurements, always con-
nect the ground lead first. Disconnect the
signal measurement lead before unplugging
the ground.

Turn off the multimeter before opening the
casing, disconnect the power to the circuit
and the measuring leads from the multime-
ter.

If measurements are made where there are
any risks of coming into contact with electric-
ity, a second person is to be informed.

The multimeter should not be stored, set up
or operated within reach of children.

When the multimeter is used by teenagers,
trainees etc., a suitable person should su-
pervise to ensure the equipment is used
safely.

If measurements are to be made where
voltages exceed 33 V AC (RMS) or 70 V
DC, be especially careful and only use safe-
ty experiment leads.

When using the measuring leads always
hold them with your fingers behind the finger
guard.

To avoid false readings, which may result in
electric shocks or injuries, always replace
the battery as soon as the flat battery indica-
+ -
tor ( ) is displayed.

Never use the multimeter when its casing is
open.
Measuring categories according to DIN EN
61010-1.

CAT I or unstipulated: Approved for meas-
urements in circuits which are not directly
connected to the low voltage mains grid
(e.g. batteries).

CAT II: Approved for measurements in cir-
cuits which are directly connected, by a
mains lead and plug for instance, to the low
voltage mains grid (e.g. household or office
appliance and lab equipment).

CAT III: Approved for measurements in cir-
cuits which are part of a building's wiring in-
stallation (e.g. stationary consumers, distri-
bution terminals, appliances connected di-
rectly to the distribution box).

CAT IV: Approved for measurements in
circuits which are directly connected to the
source of the low voltage mains (e.g. elec-
tricity meters, main service feed, primary ex-
cess voltage protection).
2. Equipment supplied
1 Digital multimeter
1 Pair of measuring probes
1 Adapter for transistor test
1 Battery
1 Instruction manual
3. Symbol legend
Hazard, read instruction sheet
Dangerous voltages
V
DC voltage
A
DC current
V
AC voltage
A
AC current
Diode and continuity test
hFE Current amplifying factor of a transistor
Ω
Resistance
+ -
Flat battery
CAT Measuring category as per IEC EN
61010-1
Double insulated casing
CE EU conformity mark
Earth symbol
2