How the pointer multimeter works, how to use the pointer multimeter

The principle and maintenance of pointer multimeter, the role of components, maintenance methods, and internal structure are explained in detail.

1. Place the multimeter horizontally and observe the position of the pointer;

2. Adjust the pointer so that it points to the zero scale;

3. According to the measured items, modulate the gear into ohmic gear, current gear, or voltage gear;

4. Adjust the range to the maximum first, and then adjust it slowly to avoid burning out the multimeter;

5. After measuring, read out the value of the pointer.

What should I pay attention to when measuring the voltage of the analog multimeter?

1. Connect the multimeter to both ends of the circuit that needs to be measured, if it is to measure direct current, you must pay attention to the polarity, red pen and positive pole, black pen and negative pole. If you don't know if the measurement is DC, you need to test it, you need to deflect the pointer to the right, and if you go to the left, you need to stop the measurement and change the position of the red and black pen.

2. In order to avoid errors during measurement, when the pointer of the multimeter is deflected, the angle generated is 30% of the maximum scale, and the range needs to be adjusted to the maximum. In this way, it is possible to avoid the number of measurements being too large, and the pointer will be broken, resulting in unnecessary damage.

3. When measuring alternating current, there is no need to consider the polarity of the circuit, and the multimeter pen can be directly connected to the circuit. In addition, the measurement of alternating current does not need to be adjusted to a large range, and the inner group of alternating current is smaller, which will not produce a large error, and also avoid the damage of the multimeter.

4. When measuring the circuit with a relatively high voltage, try not to change the range at will, otherwise it is easy to produce arc, which will burn out the contact of the switch. In addition, if you are measuring circuits with voltages greater than 100 volts, you must pay attention to personal safety.

1. Before using the multimeter, "mechanical zeroing" should be carried out first, that is, when there is no measured electricity, the multimeter pointer should be pointed at the position of zero voltage or zero current.

2. In the process of using the multimeter, you can not touch the metal part of the meter pen with your hands, so that on the one hand, you can ensure the accuracy of the measurement, and on the other hand, you can also ensure personal safety.

3. When measuring a certain amount of electricity, it is not possible to shift gears at the same time as the measurement, especially when measuring high voltage or high current, more attention should be paid to it. Otherwise, the multimeter will be destroyed. If you need to change gears, you should disconnect the watch pen first, and then go to measure after changing gears.

4. When the multimeter is in use, it must be placed horizontally to avoid errors. At the same time, care should be taken to avoid the influence of external magnetic fields on the multimeter. Shizheng.

5. After the multimeter is used, the transfer switch should be placed in the maximum gear of AC voltage. If it is not used for a long time, the battery inside the car should also be taken out to avoid the battery corroding other devices in the meter.

Here's how to use an analog multimeter:Material Tools: Pointer multimeter, battery.

1. Place the multimeter horizontally and observe the position of the pointer;

2. Adjust the pointer so that it points to the zero scale;

3. According to the items measured by the stupid slip, modulate the gear to ohmic gear, current gear, or voltage gear.

4. Adjust the range to the maximum first, and adjust it slowly in the later stage of hail loss, so as not to burn out the multimeter.

5. After measuring, read out the value of the source file god pointer.

1. Twist the switch, find the Chayou switch in the middle of the multimeter, twist the switch in the counterclockwise direction, and twist it once to come to the mode of AC voltage. 2. Select the voltage, twist it again and it will come to the DC voltage mode, select the voltage you want to test, and turn on the switch next to it. 3. Contact the electric rod to the positive and negative poles, insert the second jack below into the fourth plug-in slip hidden hole, and then touch the electric rod to the positive and negative poles of the electricity, so that the multimeter can test the voltage.

The principle of multimeterMultimeterMultimeter, also known as multiplex meter, multi-meter, three-purpose meter, multi-meter, multi-meter, etc., is an indispensable measuring instrument for power electronics and other departments, generally with the main purpose of measuring voltage, current and resistance. Multimeters are divided into pointer multimeters and digital multimeters according to the way they are displayed. It is a multi-functional, multi-range measuring instrument, which can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level.

A multimeter is a magnetoelectric instrument with a rectifier that can measure a variety of electrical parameters such as AC and DC current, voltage and resistance. For each type of electrical quantity, there are generally several ranges. Also known as multimeter or multimeter for short, the multimeter is composed of a magnetoelectric ammeter (meter), a measuring circuit and a selector switch.

By selecting the switch change, a wide range of electrical parameters can be easily measured.