Ningbo, Zhejiang, announced the 2014 water meter quality test results

In the second quarter of 2014, the Quality and Technical Supervision Bureau of Ningbo City, Zhejiang Province organized the supervision and inspection of the cold water meter products of the city and the city's electromechanical energy meter products. The cold water meter products mainly sampled 13 batches of products from 13 companies in Yuyao, Jiangdong, Zhenhai, Quzhou, and Cixi; electromechanical meter products mainly sampled one batch of products from one company in Quzhou, and the cold water was tested. No unqualified products were found on water meters and electromechanical energy meter products.

The Ningbo Bureau of Quality Supervision reminds citizens/companies of the need to pay special attention to several aspects in the selection, identification, and use of water meter products:

About water meter 1, water meter is composed of iron shell, movement and copper parts. It is generally purchased by the housing construction unit or the water supply unit, and after being certified for the first time, it is installed in a unified apartment and other occasions. As an ordinary citizen, a water meter is not a commodity that is often required to be purchased and replaced.

2. To judge the quality of the water meter, first check whether the product has a measuring instrument manufacturing license mark (CMC) and the water meter's first certification mark; secondly, check the copper fittings that affect the safety of installation and use, such as connecting pipes, connection nuts, and copper covers. Whether the material is thin or not, if necessary, the relevant department can be entrusted to test it to see whether it meets the safety standards, whether there is a problem of cutting corners and jeopardizing the use of materials.

3, the accuracy of the water meter in addition to the table itself, but also may be related to water quality, pipe material and installation requirements are related to other factors. Whether or not the water meter is accurately measured, people can sometimes use a more convenient and reliable container or weighing device to conduct a general check, but only as a reference. If it is necessary to make an accurate judgment, it may also be sent to the water meter verification station and metrology technical institute for verification.

4. Users who use the smart remote water meter or pre-paid water meter should also pay attention to product requirements and usage tips, such as timely replacement of batteries, etc., and do not need to use some brains to "stealing" water because many products have already been designed. With anti-theft measures, acts of malicious dismantling of humans may be related to the valve stopping the use of water and reducing the amount of water available for punishment.

5. In cold areas in winter, water meters installed outdoors should adopt warm-keeping and antifreeze measures. If the water meter is broken by the frozen watch glass, it should be sent to the relevant department to replace the movement and glass and re-verified.

6. As a fair measuring instrument for water trade settlement, water meter products are to ensure the interests of both consumers and water suppliers. After a new water meter is used for a period of time, its metering performance will be affected in many ways, and there are also technical requirements in this regard in product standards and verification procedures.

About the meter

In response to the implementation of “one household, one watch” in Ningbo, after the Group modified the smart meter products, the citizens had some doubts about the general existence of smart meters. Ningbo Quality Supervision Bureau gave the following reply:

Compared with the old energy meter, the smart energy meter has such features as high metering accuracy, power memory, meter freeze time, and remote transmission of information. After the smart meter is installed and used, the user can directly query the information such as electricity charges, alarms, historical electricity, and power supply curves through the liquid crystal display on the electricity meter. Using this information, users can understand their own power usage at different times and formulate scientific and rational electricity plans according to their own needs in order to reduce actual electricity bills. In the future, you can also check the real-time situation through the website, greatly improving the accuracy of meter reading, effectively avoiding the error of manual meter reading, and remotely analyzing the meter data, helping the power supply company and the user to obtain an abnormal situation at the first time, facilitating timely repair, and reducing power outages. time.

What changes do smart meters bring to our lives?

1, urge to develop the habit of saving electricity. Because some users do not pay attention to some power details, such as: turn off the TV and computer, the power light on the screen is still on, or the computer is in standby, various chargers are also plugged in the power, etc. The power is very small, and the smart meter will also be recorded. Over time, the battery power is not small. Therefore, letting more people use "smart" power is the function of smart meters. Through the promotion of smart meters, people are urged to develop electricity-saving habits.

2. Change the way people use electricity. The meter contains a time-sharing measurement function, and the data is divided into two periods each day. Residents can use the “peaks and valleys” period of electricity consumption according to the power consumption of the two periods displayed by the smart meter, such as: use electric water heaters, washing machines, etc. at night from 22:00 to 8:00 in the morning, because of the implementation trough of this period. Electricity price. Users can check your electricity situation through the smart meter. If there are many nights and less in the daytime, you can apply for time-sharing electricity prices in the business hall to easily save a large amount of electricity.

3. Allowing people to change their habit of using electricity and optimizing the use of electricity can also achieve the purpose of energy conservation and emission reduction. This is what the government strongly advocates and is the duty of all citizens.

Can "line loss" be metered into residential electricity consumption by smart meters?

The so-called "line loss" is the loss of electrical energy during the transmission of power transmission equipment and power supply lines, which occurs before the user's electricity meter. The meter measures the customer's power consumption after the meter. The power loss of the wire will not be measured in the customer's meter.

What is the "sensitivity" of the meter?

The so-called “sensitivity” of the meter is professionally the magnitude of the start current of the meter, and is also the lower limit of the measurement range of the meter.

Why is the meter still "beating" after the switch is off at home?

The customer reflected that the power switch at home was still “beating” because the power meter was still displaying information such as date, time, and power after the power switch was turned off. It seemed to be “jumping”. At this point, the smart meter is actually in a state of voltage and current. In this case, the circuit will not generate power and the power will not increase. The smart meter currently in use is powered off (without voltage). The LCD panel can still be lit by pressing the “button” on the panel. The information such as date, time, and power is displayed in a loop. This is different from the conventional electronic meter.

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