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Ammeters
Ammeters
An ammeter is an instrument for measuring and monitoring the magnitude of the electric current. Depending on whether the current is direct or alternating, ammeters are divided into different types. Those for DC are magneto-electric and those for AC can be detection and induction. There are ammeters which are combined both for direct and alternating current. They can be electromagnetic, electro-dynamic, thermoelectric, thermal, etc. In the electric circuit it is required to connect the ammeter in series with the consumer. There are different ways to increase the working range depending on the type of the measuring instrument. In magneto-electric and detection ammeters there is added shunt, in electro-dynamic and electromagnetic ammeters the coils get sectioned. The AC ammeters use current measuring transformers. Ammeters can be pointer (equipped with a scale) and electronic. Their accuracy varies depending on their purpose and their range.