How do you read multiple meters? What are the meter readings?

1. To correctly select the gear of the meter, select the current gear for current measurement, select the voltage gear for voltage measurement, and select the resistance gear for resistive measurement.

2. The pointer meter V represents the voltage reading, A represents the current reading, and the resistance reading 3. The digital meter can be selected as long as the gear is selected.

The minimum tick, the pointer points to, the estimation is to remember to use the "0" placeholder), if the pointer is about halfway between the pointer, the estimator, or56 is correct. If the minimum scale, the pointer points to the middle of and 1, and the estimation is or both are correct, the reading is incorrect, because the "7" in is already the estimation, do not continue to estimate.

Because the workmanship of the teaching ammeter and voltmeter used in the middle school experiment is very rough, and the minimum scale is the majority, when doing the experiment, in order to minimize the error, it is followed by an estimate after reading, otherwise the error calculated is too large.

1. Look at the gear 2, look at the range from the dial 3, and determine the graduation value.

4. The reading (if it is pointer-type) can be estimated to read the next digit of the graduation value.

According to the significant number rule: the minimum graduation is "1".

Estimate to the next digit of the minimum division, and estimate it by one-tenth of the minimum division. The minimum division is the estimation of "2" to the base of the minimum division, the less than half a grid is rounded, and the more than half a grid is estimated by half a grid. The minimum index is the estimation of "5" to the base of the minimum index, which is estimated by a few fifths.

Depending on what gear you are adjusting, there are generally four types of constant voltage, alternating voltage, current and resistance.

The watt-hour meter is read from left to right until the decimal point is one digit before the decimal point, and the number after the decimal point is ignored.

The following number is multiplied by the multiple above, such as: 1000 below is 1,100 below is 5, 10 below is 6, 1 below is 7, then the meter reading is 1567, generally the decimal is not counted. In the example above, the multiple above 1 is 1000, so this 1 is 1000, and in the same way, 5 is 500, 6 is 60, and 7 is 7.

For example, if the display number is 012345, the power is 1234 degrees, and the decimal number is not recorded. When actually reading the meter, you don't need to look at the multiples above, just read it from left to right. Decimals are not counted.

If there is a table with power multipliers, the number before the decimal point is multiplied by the multiplier, and if the multiplier is larger, the number after the decimal point is also multiplied by the multiplier. For example, the meter reading is, and the multiplier of the meter is 40, the reading multiplied by the multiplier number of the actual electricity consumption is 9472 degrees, if the decimal point after the multiplier is not multiplied by 32 degrees, the power supply department will not agree.

With the rapid development of China's economy, the demand for electricity in all walks of life is increasing, and the imbalance of electricity consumption at different times is becoming increasingly serious.

In order to alleviate the increasingly acute contradiction between power supply and demand in China, adjust the load curve, improve the phenomenon of unbalanced electricity consumption, fully implement the peak, flat and valley time-of-use electricity price system, "peak shaving and valley filling", improve the efficiency of electricity consumption in the country, and make rational use of power resources, the power departments of some provinces and cities in China have begun to gradually introduce multi-rate electric energy meters to charge users for time-of-use billing.

In April 1995, the State Development Planning Commission, the State Economic and Trade Commission, and the Ministry of Electric Power Industry jointly convened a national conference on planned electricity consumption in Shanghai, which decided to comprehensively implement the peak-to-valley time-of-use electricity price system in a planned and step-by-step manner in all major power grids across the country in three or four years.

The overall goal is to transfer 10 15% of the peak power of each network, and the whole country to achieve the transfer of 10002000000000000 kilowatts of peak power, and the scope of implementation is not only industrial and commercial users, but also for non-industrial and agricultural electricity consumption should be gradually implemented. In areas where conditions permit, that is, residential electricity consumption areas that have implemented one household and one meter, there will also be plans to develop trough electricity consumption and implement peak-to-valley electricity prices to improve the utilization rate of electric energy and improve the quality of electricity consumption for residents.

Different time periods and different billing standards are used for electricity users. Encourage electricity consumption during off-peak hours.

Meter Reading: This is your current electricity level.

If you want to know how much electricity you used, you have to have the last billing number.

For example, if you settled at 14100 last month, then your electricity consumption for this month is:

14552-14100=452 (degrees).

If you have a single-phase smart watch, you can simply read the numbers on the display. When the LCD screen displays the words "Current Forward Total", the displayed reading is the total electricity consumption of the current meter. When "Forward Total in the previous month" is displayed, the total positive active power frozen at 00:00 on the 1st of this month is recorded.

When the "Forward Total in the previous February" is displayed, the total positive active power that was frozen at 00:00 on the 1st of the previous month is recorded. "Total positive active electricity frozen at 00:00 on the 1st of this month" - "Total positive active electricity frozen at 00:00 on the 1st of the previous month" is equal to the electricity consumption of the previous month.

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.

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 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.

Although almost every household is now equipped with an electricity meter, especially after the original mechanical and electronic meters are replaced by smart meters, many residents do not know how to look at the power of the meter. Zidianjun thinks that we should popularize the reading of household electricity meters for everyone, so that everyone can know more about the monthly electricity consumption at home.

First of all, there are four values on the meter, these four friends who have read the manual may know, that is, the sharp, peak, flat, valley, look at the Internet said that there may only be two or three items in the smart meter in some places, but this does not affect us to look at the meter, these four values actually refer to the rate period, in general, the tip is the highest because it represents the highest electricity price, that is to say, the highest electricity rate during the peak period, and so on, this is actually the power department to encourage us to use electricity during off-peak hours and design.

1. The smart meters installed in the residential users belong to the single-phase meter, which corresponds to the concept of the three-phase meter, which is installed in the meter box and has been powered on and works normally, from the appearance, the screen will update the display page every few seconds (the default is 5 seconds); In addition, there is a button on the housing that can be used to update the display page with each press.

2. Generally speaking, the first screen after powering on is the date, how to see the display screen of the electricity meter here, because this LCD screen is character-based, so it depends on the combination of existing characters to read, look at the picture: at this moment, the reading of the screen is the current time.

3. Press the button once, and the screen will come to the second page of the time screen: the current time is 13:41:39

5. Because some places have implemented time-of-use rates and tiered electricity prices, regardless of whether they are used locally or not, the meter is to support this function, so the next few screens are generally the electricity display of the four rate periods of "sharp", "peak", "flat" and "valley".

6. Generally speaking, the electricity meter also displays the electricity consumption of the previous two months, so the back screens are generally the electricity consumption information of the previous month and the previous two months.

7. If you see such a strange two screens, a total of 12 digits of the number combination, please don't be surprised, this is the ID number of this meter, which is the only identification of the operation in the power grid, I have 12 1s on hand, of course, it is not regular, your home is a more regular ID number.

The rest of the screens are all viewed like this, with the current voltage, current, power and other project information, and the view is the same.

The number of meters divided by the multiple is the degree.

Only the middle tick mark of the multi-meter is DC and AC common barrier sail qing, the zero tick mark is on the left, and the reading is evenly increased from left to right. It is used to measure the value of DC current, DC voltage, and high-voltage alternating current.

The measured value at the time of reading (dial hand indication dial full bias indication number) magnification.

There are a total of 50 small divisions in the second row of scales, and the range is artificially selected according to the actual situation. And only one person is allowed to be an estimator when reading. For example, the range is 250V, then each small cell is 5V, the first line is 0, the second is 5, there is no line between 0 and 5, then it is estimated.