How do you read a multi meter? Reading rules for multiple meters

Reading method: according to the size of the measured resistance, the watch hand stops at a certain position of the ohm scale mark (the top one marked with a scale mark), observe the value indicated by the watch hand at this time, and then multiply by the gear where the gear selector switch is located, that is, the resistance value of the resistor.

For example, the watch hand points to the position of the ohmic scale 30, and the gear selector switch is at the position of x10, then the resistance value of the measured resistance is 30xlo = 300 In addition, the mark number of the scale mark is marked at intervals, such as the first number on the left side of the ohmic scale 0 is 5, and after 5 is 10 ......The middle number is not marked, and it can be calculated according to the small scale on the tick line.

For example, there are 5 large cells between 0 and 5, each large cell represents the number 1, and there is a small cell between each large cell, then a small cell represents.

For example, if the hand is on the third block (counted from right to left), it represents the number 3, and so on.

The resistor is measured in the R position, and there is an ohmic scale on the dial. The voltage is measured in the V gear, and the side current is in the A gear.

The resistance is generally measured in the top row, and the voltage and current are measured in the lower rows.

There are symbols behind the corresponding row.

Look at the range clearly, it is 1, 10, 100, 1000 and calculate according to the reading.

What is the first thing to judge? Resistance, voltage, or current, and then look at the range, corresponding to the pointer reading, pay attention to the range so that the pointer points near the middle scale, otherwise the error is large.

Multimeter now! What's your model?

The reading rules for multi-meter are as follows:

Measure the resistance and read the number of the row of ticks marked with (usually the top tick mark).Measured with x1 gear, the indicated digital value is ohms, with x100 gear, the reading should be multiplied by 100, measured with x1k gear, the indicated number should be multiplied by 1,000 (ohms), with x10k gear, it should be multiplied by 10 (thousand ohms), so that the resistance pointer for measuring 10k should be at the "1" position, and the 100 ohm one is almost at the "0" position ().

In order to clearly see the value indicated by the pointer, it should be measured again in a suitable gear, and the measurement value is more accurate when the pointer is in the middle of the dial.

To measure the voltage and current, read the row of scales marked "V A (or MA)" (usually the second scale mark), and the selected range is the value of the dial when it is full. The dial is marked with several rows of numbers "0-50-100-250", "0-10-20-50", "0-2-4-10" just to mark the corresponding to the selected range, easy to cooperate with the range file reading, no matter how he marks the watch, the watch hand at the full scale indicates the value of the selected range, and its actual meaning is the same.

How to use the multi-purpose table:

1. When measuring the current, like the ammeter, the multimeter should be connected in series in the circuit under test, and for direct current, the current must flow from the red meter pen to the multimeter and out of the black meter pen.

2. When measuring voltage, like the voltmeter, the multimeter should be connected in parallel at both ends of the circuit under test, for direct current, the red meter pen must be connected to the point with higher potential, and the black meter pen must be connected to the point with lower potential.

3. When measuring the resistance, after selecting the gear, the two watch pens should be in contact with each other, adjust the zero knob of the resistance file, so that the pointer points to the zero position of the resistance scale, and then connect the two watch pens with the two ends of the resistance to be measured. It should be noted that when switching to another range in ohms, the zeroing knob of the resistance level needs to be readjusted in order to take the measurement.

Before measuring the resistor, the resistor to be measured must be disconnected from the power supply, otherwise it is equivalent to adding another power supply in the ohm file, which will not only affect the measurement results, but also may damage the meter head.

If you are using a smart meter, it is recommended that you can check the current meter readings through the LCD screen on the meter; A string of numbers on the screen will directly display the integer and decimal of the meter reading, the model of the meter is different, and the data displayed on the LCD screen may be different; You can press the wheel display button next to the screen to switch the display interface and view the data displayed on the LCD screen with the words "Current Total Electricity" or "Current Forward Active Total", which is the cumulative electricity consumption of the current meter.

If you are using a mechanical meter, you can see the cumulative electricity consumption recorded by the meter through the numbers in a row of windows on the dial of the meter; In general, the red window represents the decimal part, which is 1 decimal place; The black window represents the integer part, starting from the far right, with the first digit being the single digit, and so on.

If you need to calculate the actual electricity consumption during a certain electricity consumption period, the electricity consumption = this meter reading - the last meter reading reading, if your meter is equipped with a transformer, you also need to multiply the multiplier of the transformer.

We hope you find ours helpful.

The reading method of the meter degree, for inexperienced users, the first look at the number on the meter will be very confused, so how many degrees the meter uses, first learn to see the reading position of the meter, the meter is used to measure the power consumption over a period of time, the part marked in the red box is the reading position of the meter, the reading from front to back is: thousand, hundred, ten, single digit, the red part behind is the value behind the decimal point, generally not calculated when looking at the meter reading.

The device that displays the readings is a cumulative counter, which is the amount of electricity used by the meter since it was activated.

Therefore, the method of calculating the number of degrees of electricity consumption in a period of time is as follows: subtract the reading w, which was the last time you looked at the meter, from the reading this time: to represent the actual electricity consumption reading;

In addition, n2: indicates the reading of the watch this time;

n1: indicates the reading of the last watch;

The reading in the meter shown above is that if the reading was 20 degrees last month, then the sum of the two is the electricity consumption for that month, which is 43 degrees.

If you are using a smart meter, it is recommended that you can check the current meter readings through the LCD screen on the meter; A string of numbers on the screen will directly display the integer and decimal of the meter reading, the model of the meter is different, and the data displayed on the LCD screen may be different; You can press the wheel display button next to the Tongxiao screen to switch the display interface, and view the data displayed on the LCD screen with the words "current total power" or "current forward active total", that is, the cumulative power consumption of the current meter.

If you are using a mechanical meter, you can see the cumulative electricity consumption recorded by the meter through the numbers in a row of windows on the dial of the meter; In general, the red window represents the decimal part, which is 1 decimal place; The black window represents the integer part, starting from the rightmost part of the call, with the first digit being the single digit, and so on.

If you need to calculate the actual electricity consumption during a certain electricity consumption period, the electricity consumption = the current meter reading - the last meter reading is included in the bridge, if your meter is equipped with a transformer.

It also needs to be multiplied by the multiplier of the transformer.

We hope you find ours helpful.

The electronically displayed electric brother trillion energy meter can be read directly according to the indication, and the unit in front of the decimal point is tens of millions of hours. The black or white numerals in front of the dial of a mechanical energy meter are integer parts in kilowatt hours. The red Xianchun number at the back is a decimal guess, and it is generally not necessary to read it.