How to use a multimeter to measure the continuity of a circuit?
Use the resistance file, which is X1, or the buzzer file.
1. Turn on the power switch of the multimeter, turn the knob on the multimeter to the diode (buzzer) position, and insert the red and black test leads into the correct position of the multimeter. Tips: Before testing, you must first ensure that the multimeter is available, and you must ensure that the circuit is not charged during testing.
2. Short-circuit the red and black test leads to hear a buzzing sound, and the red LED light on the multimeter is on to ensure that the multimeter is available.
3. Touch the red and black test leads to the two ends of the circuit to be measured respectively. If you hear the beeping sound, the red LED light on the multimeter is on, and the circuit is connected; if there is no beeping sound, and the red LED light on the multimeter is not on, the circuit is broken.
Tip: Make sure that the short circuit is not powered. Do you know? The diode (buzzer) gear is the most commonly used gear.
1 Get the multimeter ready.
2. Adjust the range to "buzzer".
3 If the line is connected, the multimeter will emit a continuous "beep".
4 If it is broken, the "buzzer" will not sound, and the screen will display 1, indicating that the resistance is infinite.
Precautions for measuring voltage with a multimeter When measuring AC voltage, you must use the maximum AC voltage range to measure, and the needle must be inserted into the hole of the voltage range. If you use electricity to block the measurement, the meter will burn.
1. The correct measurement diagram, taking the digital meter as an example, such a gear should be selected normally, and the test pen must be inserted into the corresponding hole to measure AC three-phase 380 volts
2. The wrong measurement diagram, the resistance gear is selected to measure the three-phase 380 volts, the meter usually jumps randomly and then burns out.
3. Wrong measurement chart, choose the current gear or insert the needle into the current hole to measure the three-phase 380 volts, which will also cause damage to the multimeter.
