Features of Analog Multimeter_Functional Features of Analog Multimeter
Analog Multimeter
The analog multimeter is an instrument used to measure DC current, DC voltage and AC current, AC voltage, and resistance. It mainly consists of three parts: indicating part, measuring circuit and conversion device. Compared with the digital multimeter, it is more convenient and intuitive.
Features of Analog Multimeter
1. Automatic range, high input impedance.
2. Voltage and resistance are automatically set to the most appropriate range.
3. Automatic polarity switching.
4. 1-10MΩ high input impedance.
5. Series capacitor input type.
6. No need for zero adjustment.
7. Built-in battery check function.
Functional characteristics of analog multimeter
There are generally four scale lines on the head of an analog multimeter, which respectively represent the readings of resistance, voltage/current and level.
The calibration of each gear of the ohmmeter is carried out based on the respective central resistance values. Therefore, when measuring resistance, the pointer should be displayed near the center of the scale as much as possible to reduce errors. The calibration of each file of the ammeter and voltmeter is carried out based on the respective full-scale values. Therefore, when measuring, the indicated value of the pointer should be as close to the full-scale value as possible to reduce the error.
The measurement of the level is actually realized by measuring the AC voltage. Therefore, although the level is defined by taking the logarithm of the power ratio, it can be transformed into a voltage measurement. Since the zero power level is the level when the lmW power is obtained on the 600W load, the voltage on the load at the zero power level is the zero level voltage.
The decibel scale on the dial corresponds to the lowest level of AC voltage (10V level).
Application of analog multimeter
The analog multimeter is a portable analog multimeter for measuring weak current circuits. It can be used not only to measure small communication equipment, household appliances, lamp line voltage and various batteries, but also to use its additional functions for circuit analysis and so on.
