3B SCIENTIFIC PHYSICS 1017895 Folha de instruções

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3B SCIENTIFIC ® PHYSICS

Instruction sheet

12/16 SD/JS

The demo-multimeter is an electronic meter fea-

turing a double scale for analog measurement of

current and voltage in demonstration experi-

ments. It is suitable for use as a free-standing in-

strument or for setting up in training panel frames.

The meter can handle measurements of current

and voltage values and also allows the zero point

to be set up in the centre of the scale for meas-

urement of DC quantities. All the possible meas-

uring ranges can be selected by means of a sin-

gle rotary switch.

This equipment is protected by fuses and au-tho-

rised for making measurements in circuits directly

connected to the low-voltage mains via plugs

(CAT II), i.e. for measurements on house-hold

appliances, for example. The current measuring

Demo Multimeter 1017895

1. Description

ranges are resistant to long-term overloading up

to 10 A. Generous protection of all the current

ranges by means of semiconductor circuit break-

ers prevents the fuse blowing unintentionally in

many cases.

Switching between measuring ranges does not

break any circuits connected to the equipment.

This means it is possible to carry out measure-

ments on voltage converters, for example, with-

out causing induction surges. Resistance R, con-

ductance G, impedance Z and admittance Y can

easily be determined as quotients of current and

voltage measurements thanks to the non-inter-

rupting switch capability without the need to

change the wiring.