How to read the AC 500-level analog multimeter
For the multi-row scales on the analogue multi-purpose dial, many beginners seem to be very confused. They don't know how to read the indication reading of the scale where the pointer is located, especially when measuring voltage, for high voltage ranges. reading, because some early pointer-type digital meter scales only show a maximum value of 250 in the voltage range. In fact, in the 500th gear, multiply the scale reading by 2 times to get the correct reading. If it has a 100V gear, multiply by 4 times.
Pointer multimeters are mainly used for measuring AC and DC voltage, current and resistance. The entire analog multimeter is mainly composed of a meter head, a meter head dial, a meter head correction screw, a function knob, an ohm correction knob, a test lead jack, a transistor detection jack, a test lead, etc. Because the analog multimeter has many measurement functions, there are categories on the dial to represent different scale lines and scale values. The dial scale of the analog multimeter is composed of five concentric arc-shaped scale lines. Each scale line is marked with a fixed reading scale value. These scale values need to be read in conjunction with the gear position of the function knob.
The scale lines on the dial, from top to bottom, are:
1. Resistance scale (Ω)
2. DC/AC voltage (DC /AC)
3. Current value scale (A) [Note: The current and voltage value scale lines of some meters are common and are on the same scale line]
4. Decibel dial (DB)
5. Transistor magnification scale (hFE)
The new generation of analog multimeters have reflectors on the dials to eliminate measurement parallax.
The question raised by the question is that the voltage measurement scale on the scale on the dial of an analog multimeter shows a maximum reading of 250, but the function knob of the multimeter has 500 ranges to choose from, and some meters even have a 1000 range. Select, then how to read the measured voltage reading when reaching the 500 level? As shown in the picture below, the voltage measurement function of the 500-type multimeter has 500 options. In addition, the voltage range of the model in the picture below even has a 2500V AC and DC voltage measurement range. When the meter in the picture below measures 2500V AC or DC, the black The test lead does not move. The red test lead must be inserted into the 2500V voltage jack in the lower left corner of the picture below:
