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Uses of Ammeters

8/8/2012 1:36:26 PM | by Anonymous


Ammeters, also known as ampmeters in some cases, are measuring instruments that are used to measure the electric current in a circuit. The current measurements are taken in amperes (A), and thus the name of the instrument; ammeters. There are smaller units of readings namely milliamperes and microamperes, which are measured by milliammeters and microammeters respectively. There are several designs of these instruments available in the market today that take readings differently. Previously, ammeters were used in laboratories and relied on the Earth’s magnetic field in order to be able to take readings of the current flowing through a circuit. However, with improvements in technology, better ammeters were developed that did not rely on the Earth’s magnetic field and could take readings in any position providing accurate readings of the electrical power flowing through systems.

The use of ammeters is vast, ranging from school laboratories to construction industries. Ammeters are used to measure the flow of current through the wiring of newly constructed buildings to ensure that the current is not too high or too low and has the ability to power electrical devices within a safe range. Electrical devices manufacturing companies also make use of ammeters to test their devices and ensure that they are functioning properly before putting them up for sale in the market. Not only can ammeters be used to test the wiring and electric circuits of new buildings but they can also be used to test the circuits of old buildings. Electricians often use these devices in case a problem arises in the building’s electric circuit to be able to detect the fault and correct it.

As there is direct or alternating current in electricity, ammeters can be configured to take readings of either of both of these types of currents. Ammeters usually have very low resistance against current in order to be able to provide accurate readings. However, aside from this beneficial feature of ammeters, it could also be a disadvantage. As ammeters are unable to resist current, if they are connected to an incompatible device, it could damage the ammeters and even cause a short circuit, along with permanent damage to the ammeter. Not only that, the improper use of ammeters may even pose as a danger to the user. It is therefore important to have knowledge as to how to operate the ammeter.

Aside from the analog ammeters, there are also the digital ammeters that serve the same basic functions: taking readings of the current flowing through a circuit. Unlike the analog ammeters that use a needle and results have to be read out from the marked numbers, digital ammeters are able to simply display the readings on a screen for a reading to be taken. These devices, similar to analog ammeters, are inserted into a circuit to take a reading. They can either be run by direct electricity from power sockets or be battery powered. The advantage of these ammeters is that they are able to provide accurate reading that can easily be noted. Also as they can be battery powered, they are portable and can be taken outdoors to circuits that do not have any power source near them.

Ammeters should have very low resistance to ensure that a fair reading is taken and the reading is not changed in anyway due to the ammeter being added to the circuit. In order to not disrupt the flow of current within the circuit, ammeters are usually connected to the circuit in series. The flow of current across a certain device in the circuit can be measured when the ammeter is connected in a parallel formation to that particular device.

Ammeters are very beneficial devices that can help to solve problems or test equipment in several different industries. They can prevent any mishaps from happening as precautions are taken beforehand.

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