How to measure resistors with multimeter
Use the resistance detection file of a multimeter to measure the resistance value. The specific method and steps are as follows:
The ohm range of a multimeter can measure the resistance of a conductor. The ohm range is represented by "Ω" and is divided into four levels: R × 1, R × 10, R × 100R × 1K. Some multimeters also have an R × 10k range. To measure resistance using a multimeter in the ohm range, in addition to the requirements that should be met before use, the following steps should also be followed.
1. Place the selector switch in the R × 100 position, short-circuit the two probes to adjust the zero position knob of the ohm range, so that the pointer points to the zero position on the right end of the resistance scale line. If the pointer cannot be adjusted to zero, it indicates that the battery voltage in the meter is insufficient and the battery should be replaced.
2. Use two probes to respectively touch the two pins of the measured resistor for measurement. Correctly read the value of the resistance pointed by the pointer, and then multiply it by
Multiplying ratio (R × 100 should be multiplied by 100, R × 1k should be multiplied by 1000...). It is the resistance value of the measured resistor.
3. To ensure accurate measurement, the pointer should be placed near the center of the scale line during measurement. If the pointer angle is small, it should
Switch to R × 1k gear. If the pointer angle is large, switch to R × 10 or R × 1 gear. After each gear shift, adjust the Ohm gear zero adjustment knob again before measuring.
4. After the measurement is completed, the probe should be pulled out and the selection switch should be placed in the "OFF" position or the maximum AC voltage position. Put away the multimeter.
When measuring resistance, attention should be paid to:
1. The measured resistance should be removed from the circuit before measurement.
2. Do not touch the two probes together for a long time.
3. Both hands should not touch the metal rods of two probes or the two pins of the measured resistor at the same time. It is best to hold both probes with the right hand.
4. If the ohm range is not used for a long time, the battery in the meter should be removed.
