clamp-on ultrasonic flow meter is a type of ultrasonic flow meter that is designed to be installed on the outside of a pipe or conduit, rather than being installed inside the pipe.

Bulk meter is a type of flow meter that is used to measure the flow of a fluid in a large pipeline or conduit.

Electromagnetic flowmeter is widely used in petroleum, chemical industry, metallurgy, textile, food, pharmaceutical, paper and other industries, as well as environmental protection, municipal management, water conservancy construction and other fields.

Some common faults of electromagnetic flowmeter are caused by the damage of the components of the instrument itself, and some are caused by improper installation, environmental conditions, fluid characteristics and other factors, such as display fluctuation, precision decline and even instrument damage. It can generally be divided into two types: faults during installation and commissioning and faults during normal operation.