How to use several gears of pointer multimeter
A pointer multimeter is not unfamiliar to everyone. Although it cannot be directly compared to a digital multimeter, it is a widely used and easy to operate instrument with a wide range of measurable gears. Today, we will talk about its several gear uses, hoping that everyone can get a good understanding of its advantages~~
1. Check the header and pins
Before using a pointer multimeter, first shake the multimeter to see if the pointer can swing flexibly. If it cannot swing flexibly, it indicates that the pointer is abnormal and needs to be calibrated or replaced. After shaking the multimeter, check if the needle can return to the "0" position on the left side. If not, you need to use a "one" screwdriver to adjust the zero knob on the panel, so that the pointer returns to the "0" position.
Attention: Between the zero position gauge function and the adjustment knob, only half a turn can be adjusted to adjust the zero position, otherwise it is easy to damage the adjustment screw under the zero knob.
2. Install the probe
Before measurement, insert the black gauge into the "-" or socket, and insert the red probe into the "+" socket. If you need to measure high current or high voltage, you need to insert the positive probe into the "5A" or "2500V" socket. For detailed operation, please refer to the following figure.
3. Use of Resistance Block
Before using the resistance gear for measurement, first connect the probe and check if the probe can point to the "0" position. If not possible, rotate the "Ω" knob on the panel by hand to make the pointer point to the "0" position. If the resistance gear is changed, it needs to be zeroed again.
Attention: If the resistance settings of R * 1, R * 10, etc. cannot be adjusted to "0", then the 1.5V battery in the multimeter should be checked for insufficient power; If the R * 10K gear cannot be adjusted to "0", then check if the 9V or 15V battery in the multimeter is low.
If the R * 1 gear is used to measure a 6.8 Ω resistor and the pointer indicates the position of 6.8, it means that the resistance of the resistor is 6.8x1=6.8 (Ω); If the meter needle indicates the position of 7.9 when measuring a 790 Ω resistor in R * 100 mode, it means that the resistance value of the resistor is 7.9x100=790 (Ω); If the R * 1K resistor measures 5.6K Ω and the pointer indicates the position of 5.6, it means that the resistance value of the resistor is 5.6x1000=5600 (Ω), which is 5.6K Ω.
