A multimeter is called electronic measuring instrument that combines multiple functions. Also in this apparatus there is a wide range of measurements. A multimeter is often called a avometr, as the device has an ammeter, ohmmeter and voltmeter.
The wizard gave the device another name is the tester. In a modern machine may have many functions, and this Assembly is at least extremely rare.
Types of multimeters
There are two types of electronic measuring instrument - analogue and digital. If the information is displayed on the digital display, this digital multimeter. If there is to be a habitual scale arrow, then analog. Most relevant to the present devices in digital form. However, analog options does not lose its popularity, despite the rapid development of technology.
The main features of the multimeter
The main characteristics of the device should include the bit width and precision. In the simplest device, the bit width is 2.5, and the error in the measurements is on the verge of 10%. The device of the middle class feature a bit in 3.5, with an error of 1%. The highest category multimeters have the error in measurement of 0.1%, and the bit width equal to 4.5.
If you need the device for professional use, then the bit width should be 5 and above. The accuracy of such apparatus is high. It depends on boundaries and type of measurements, but the accuracy of this multimeter is not to exceed 0,01%.
Modern devices are characterized by their versatility. Pick up the necessary apparatus will not be difficult, because of the varieties of multimeters unlimited. In each device there is a standard set of measurements: current, resistance and voltage.
With the help of this device can measure capacitance, frequency, temperature, inductance and more. A multimeter can be used to test semiconductor devices and to generate test signals. Modern device is an oscilloscope, the display of which is reflected waveform.
In addition modern multimeter can be connected to the PC and transfer the screen measurement. The appearance of the multimeter may be different. It all depends on the specific model.