Electromagnetic flowmeter before and after the straight pipe section requirements

1. Definition of front and rear straight pipe sections

Front and rear straight pipe sections refer to a section of straight pipe near the inlet and outlet of the flow meter. They should be a straight section, and the length of the straight section must comply with regulations. Accurate front and rear straight pipe lengths are a key factor in determining flow meter accuracy and reliability.

2. Requirements for the front and rear straight pipe sections

1. Requirements for the front straight pipe section

(1) There must be a straight pipe section at the inlet of the electromagnetic flowmeter , the length should be at least 10 times the pipe diameter.

(2) There cannot be any elbows, tees and other accessories in this front straight pipe section. If elbows and tees are installed in the front straight pipe section, their length must be greater than or equal to the length of the pipe diameter.

(3) If emergency closing valves and regulating valves are installed in the front straight pipe section, ensure that their length is greater than or equal to the pipe diameter.

2. Rear straight pipe section requirements

(1) There must also be a straight pipe section at the outlet of the electromagnetic flowmeter, and the length should be the same as the length of the front straight pipe section, that is, it should also be It is 10 times the pipe diameter.

(2) There cannot be any elbows, tees and other accessories in this rear straight pipe section, and the length should be ensured to be greater than or equal to the pipe diameter.

(3) If emergency closing valves and regulating valves are installed in the rear straight pipe section, ensure that their length is greater than or equal to the pipe diameter.

3. Reasons for the front and rear straight pipe sections

The function of the front and rear straight pipe sections is to stabilize the fluid flow rate at the inlet and outlet of the flowmeter. This is to ensure the measurement accuracy and reliability of the electromagnetic flowmeter. One of the key factors of sex. If the flow rate at the inlet and outlet is unstable, it will lead to inaccurate measurement results.

In practical applications, if the requirements for the front and rear straight pipe sections cannot be met, a larger flow meter model or the installation of a flow regulator can be used to achieve accurate measurement.

This article introduces the requirements and reasons for the straight pipe sections before and after the Famimet electromagnetic flowmeter. It is recommended that the corresponding requirements and specifications should be followed during on-site installation. operate. Only in this way can the measurement results of the flow meter be ensured to be more accurate and reliable.