1. According to the nominal diameter, how many categories can it be divided into?

According to the nominal diameter, water meters can be divided into two major categories: small-diameter water meters and large-diameter water meters. The industry stipulates that water meters with a diameter size of 50mm and below belong to the small-diameter category. Water meters with a diameter size of 50mm and above are classified as large-diameter water meters.

2. Is there any festival related to water meters

There are many internationally recognized festivals, and each country also has its own festivals. But for smart water meters, which are relatively modern instruments, are there any relevant festivals?

On May 20, 1875, 17 countries signed an important convention in Paris, France, known as the "Metre Convention," which essentially established the International System of Units (SI). The current metric units are based on this standard. For over a century, the International Organisation of Legal Metrology (OLM) has ensured the uniformity of international measurement standards for water meters, which has facilitated the internationalization of water meter production.

In 1999, the 21st International Conference on Weights and Measures established "World Metrology Day", which falls on the 20th of May every year. As water meters are measuring instruments, many practitioners in the water meter industry should be aware of this day.

3、Is a remote-reading water meter necessarily better than a mechanical water meter?

With the development of technology, traditional mechanical water meters are becoming less and less popular. Various new types of water meters, such as IC card water meters and smart water meters, have emerged to replace the original mechanical water meters. For example, water meters with remote transmission function have the main advantage of bringing great convenience to users, such as enabling data storage, water consumption recording, remote meter reading, remote settlement, and mobile phone payment.

However, mechanical water meters still exist on the market. Their main advantage lies in their low price, making them a good choice for users with a relatively low budget. However, the maintenance workload for such water meters is relatively high in the later stages.

4、How to check if a water meter is qualified?

I believe everyone wishes to purchase a water meter that meets quality standards. When making a purchase, Langchuan Instruments reminds you to inspect the exterior of the water meter. A qualified water meter should bear relevant labels, such as the manufacturer's logo, water flow arrow, nominal diameter, and measurement class.

Before leaving the factory, the manufacturer will conduct quality inspection on the water meters. Qualified water meters should bear a qualified label or a qualified seal.