3B SCIENTIFIC PHYSICS Escola 2 1006811 Instruction Sheet - Page 2

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Carefully read the instruction manual before

•

using the multimeter and obey the instruc-

tions therein.

The multimeter may only be used by per-

•

sons who are able to recognise the risks of

contact and take due precautions to avoid

them.

This multimeter is not a toy and must not fall into

the hands of children.

Do not place it, keep it or use it anywhere

•

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 made where there are

•

any risks of coming into contact with electric-

ity, a second person is to be informed.

The assumption needs to be made that unfore-

seen voltages may be present in the vicinity of

objects being measured (e.g. faulty equipment

or capacitors).

Before using the multimeter, check the

•

housing and measuring leads for damage

and if there should be any malfunctions or

visible damage, the multimeter is not to be

used. Pay specific attention to the insulation

for the measuring sockets.

Be particularly careful when measuring volt-

•

ages in excess of 33 V AC (RMS) or 70 V

DC.

For voltages which are in excess of 33 V AC

•

or 70 V DC, only use safety measurement

leads conforming at least to CAT II.

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.

The multimeter may not be used to make

•

measurement on circuits which exhibit co-

rona 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.

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.

In order to check that the multimeter is ready

•

to use, select the battery test function. Af-

terwards, it is then possible to check that the

voltage source is disconnected and no volt-

age is present.

The multimeter may only be used in a dry,

•

dust-free environment with no risk of explo-

sions occurring.

When measuring current in a circuit, make

•

sure to switch off the power before connect-

ing the multimeter into the circuit.

When making measurements, always con-

•

nect the ground lead first. Disconnect the sig-

nal 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.

2. Symbol legend

Hazard, read instruction sheet

Voltage

Current

Moving coil galvanometer

Apparatus with electronic amplifier

DC quantities accuracy class 2

AC quantities accuracy class 3

Use in horizontal position

Use in vertical position

DC quantities

AC quantities

Needle position zero centre

"OFF" position

Measuring category as per IEC EN

61010-1

Double insulated casing

EU conformity mark

Earth symbol

┴

Ground symbol

Battery symbol