What is a wattmeter?
Wattmeter is a tool that provides a visual indication of the amount of electricity supplied to the circuit. This indication is expressed in WATTS, a standard specific unit for supply or electricity consumption. There are two commonly used Wattmeter types: analog and digital. Analog meters indicate power by means of needle and scale indicator, while digital tools show the power supply on the liquid crystal display (LCD). Wattmethery is usually evaluated for the set voltage range, but may include functions such as knocking on coils that allow multiple voltages. Some types of electrical appliances or installations use much more energy than other similar voltage evaluation. The Wattmeter allows you to monitor energy use to see if the circuit is playing correctly. This information is essential in larger installations where high resistive loads are used. Wattteters in such installations allow operators and technicians to monitor the health JEnergy and overall energy leveling and consumption.
Wattteters are generally presented in one of two basic formats. The first is a traditional analog wattmeter. These are electrodynamic tools and consist of three internal coils - two static current coils and a moving potential coil that has an indicator needle attached to it. When the electric current passes through two current coils, the electromagnetic field is generated. This field causes a potential coil to move and display the value on the scale behind the needle.
The second type of wattmeter is an electronic or digital meter. These devices differ from electrodynamic meters in the use of energy use. Digital meters use the microprocessor to assess the voltage and current values from the perimeter at a frequency of several thousand samples per second. These samples are used to calculate the averagethe power factor or energy. Power reading is then digitally displayed on the LCD display.
Wattmeter is a relatively sensitive tool and can be damaged by excessive current values. As with most electrical measuring instruments, WattTetters are usually evaluated for a specific voltage range. Many top meters have knocking on coils or switching of the series/parallel current coil, allowing such devices to be used for multiple voltage ranges. All Wattteters are also evaluated for secure maximum current or amperage values; These assessments should be observed to prevent damage or destruction of the meter.