Producers of any electric meters give a guarantee for the goods produced by them not less than 15 years. It says to us that often it is not necessary to change this device. However before making purchase of the considering device, it is necessary to learn what types of counters happen and what consists their merits and demerits in.
How to choose the reliable electric meter to the apartment?
For a start we will deal with types of metering devices, we will note pluses and minuses of each of them.
- Induction. They are equipped with two coils: current and tension. Their mechanism and the principle of functioning are quite simple. Magnetic field of both coils forces a disk to rotate. It in turn sets in motion wheels with the figures specified them showing an electric power expense. A lack of such device - its inaccuracy, and advantage - not the high cost and long term of operation.
- Electronic. Their structure and also the principle of work considerably differ from induction. They measure tension directly, automatically transferring the devices given on the indicator. Such devices have many pluses: they are compact, exact and simple in use. Their minuses - the high cost and not long service life.
According to the above-mentioned facts on a question concerning what electric meter to choose, it is possible to tell safely that induction. Many do not see sense to buy the electronic device and to overpay for usability.
How to choose the electric meter for the private house?
The single-phase counter perfectly will be suitable for private houses and small offices. To choose such device, it is necessary to know to what values it is necessary to pay attention first of all. On the panel of the device it is necessary to find the main characteristics to which carry nominal and also maximum currents. For example, 5-30 Ampere say value to us that the rated current is equal 5A, and maximum - 30. The these indicators are higher, the device will be able to sustain big loading.
On sale there are also three-phase electric meters which often use at the small enterprises.
Our councils how to choose the electric meter, will help to buy the reliable and inexpensive device:
- will cheaper cost the device having a class of the accuracy-2.0, device cost with an accuracy of 1.0 will be much higher;
- the automated electric meters differ in the high cost and small service life therefore they are inexpedient to be bought;
- additional useful functions will affect the price, but not quality of the device;
- it is better to give preference to the checked producers existing in the market not one year.