Electrical appliances

Electrical appliances - class of devices used to measure different electrical quantities
. The group also includes electrical devices except the actual instruments and other measuring instruments - measures, converters, integrated installation

The use of
electrical measurement means are widely used in energy, communications, industry, transport, scientific research, medicine, as well as in everyday life - for accounting of electricity consumed. Using special sensors for the conversion of non-electrical quantities in electrical and electric devices can be used to measure a variety of physical quantities, which further extends their range of application.

Classification The most essential feature for the classification of electrical measuring equipment is measured and reproducible physical quantity, in accordance with these devices are divided into a number of types:
ammeters - for measurement of an electric current;
Voltmeters - to measure voltage;
ohm meters - for measurement of electric resistance;
multimeters (aka testers avometry) - combined
devices cymometers - measuring the frequency of the electric current oscillations;
resistance boxes - to play a given resistance;
wattmeters and varmeters - to measure the power of an electric current;
electric meters - to measure the consumed electricity, and many other kinds of
In addition, there are other grounds for classification:
on purpose - measuring instruments, measure, measuring transducers, measuring devices and systems, auxiliary devices;
according to the method of measurement results - indicating and recording (in the form of a graph on paper or photographic film, print, or in electronic form);
the method of measurement - Instruments immediate evaluation and comparison tools;
according to the method of application and design - shield (dockable on the shield or panel), portable and stationary;
on the principle of action - electromechanical: magnetoelectric, electromagnetic, electrodynamic, electrostatic, ferrodynamic, induction, magnetodynamic, electronic, thermoelectric, electrochemical