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.
1