How to take a reading on a pointer multimeter with AC 500 rating
For the pointer universal dial above the multi-row scale table, beginners many seem to be very confused, do not know how to read the pointer where the dial indication readings, especially when measuring the voltage for high voltage gear readings, because some of the early pointer digital table dial voltage gear scale up to only show the value of 250. In fact, in the gear 500 gear, that is the reading of the scale multiplied by 2 times, is the correct reading, if there is a 100V gear, multiplied by 4 times.
Pointer multimeter is mainly used for AC and DC voltage and current, resistance measurement. The whole pointer multimeter is mainly composed of meter head, meter head dial, meter head correction screw, function knob, ohm correction knob, meter pen jack, transistor detection jack, meter pen and so on. Precisely because the pointer multimeter measurement function is more, so the dial is classified to indicate different scale lines and scale values. The dial scale of the pointer multimeter consists of five concentric arcs, each scale is marked with a fixed reading of the scale value, which need to be matched with the function knob gear to read.
How to read the voltage measurement?
Multimeter dial AC and DC voltage scale values are equally spaced distribution, a total separation of 5 large grid, each large grid is divided into 2 equal parts of the middle grid, each of the middle grid is subdivided into 5 small grid. Each grid represents the reading value because of the different gear selection is not the same.
Asked the gear to 500 gears, how to read the readings on the dial? In fact, it is very simple, the 5 big grids on the dial, at this time, each big grid represents "100", each small grid represents the reading is "10". That is to say, the scale on the right side of the highest display "250" If you are playing to the 500 gear, then you will be in this scale based on multiplying by 2 is the current reading. If the multimeter in the picture above to 2500 gears, then it is multiplied by 10 times the reading, if the pointer indicates to the dial on the 250 scale then the reading is 2500.
Currently indicated on the dial scale is about 211 scale, if this time the function of the knob gear to 500, then the reading is multiplied by 2 times, 211 * 2 = 422V or so, if this time is played to the 2500 gear gear, then the reading is multiplied by 10 times, 211 * 10 = 2110V or so, the voltage.
