Can the 100 diameter of the electromagnetic flowmeter be used with the pipe diameter of 5o?

Electromagnetic flowmeters (EMF) are a new type of flow measuring instruments that developed rapidly with the development of electronic technology in the 50s and 60s of the 20th century. Electromagnetic flowmeter is an instrument that applies the principle of electromagnetic induction to measure the flow rate of conductive fluid according to the electromotive force induced by the conductive body when it passes through an external magnetic field. The structure of an electromagnetic flowmeter is mainly composed of a magnetic circuit system, a measuring catheter, an electrode, a housing, a lining and a converter.

Hello! I am the flowmeter technology of Weifang Yafeng Chemical Instrument, and I am happy to help you answer:

If it is a 100 pipe diameter with DN50 electromagnetic flowmeter, only a simple diameter change can be required, (the electromagnetic flowmeter needs to be at least 250mm straight pipe section in front, and 150mm straight pipe section is required in the back), because the 100 pipe diameter is reduced to 50 pipe diameter, the necking is generally full pipe, so there is no need to consider the problem of dissatisfaction with the pipe.

If the pipe diameter of 50 is equipped with the electromagnetic flowmeter of DN100, it belongs to the pipe diameter expansion, at this time, the pipeline is easy to be dissatisfied with the pipe, which will bring measurement errors, so it is recommended to install it obliquely, flow obliquely upward, or install vertically (medium flow direction vertically upward).

Normally, no, even the diameter reduction must be 5m away.

It is necessary to choose the appropriate flowmeter caliber according to the size of the flow rate.

It is necessary for the front and rear straight pipe sections to meet the requirements of the front straight pipe section of 5 meters, can the flow rate be met.

The electromagnetic flowmeter is a common flow measurement device, and the straight pipe section is a straight pipe section installed before and after the electromagnetic flowmeter. To ensure the accuracy and stability of the flow measurement, the straight pipe section should meet the following requirements:

Inlet Segment Length Requirements:

At the inlet of the electromagnetic flowmeter, a straight pipe section that is long enough should be maintained. It is generally recommended that the length of the inlet section be 10 to 20 times the diameter of the pipe.

Exit segment length requirements:

At the outlet of the electromagnetic flowmeter, a long enough straight section should be maintained. It is generally recommended that the length of the outlet section should be 5 to 10 times the diameter of the pipe.

A device that is not affected by the ideal flow state before and after the straight pipe section

Before and after the straight pipe section, the influence of non-ideal flow states such as elbows, valves, and pumps should be avoided. These devices can cause turbulence, eddy currents, or splitting of the flow that can affect the accuracy of the flow meter's measurements.

No foreign matter or obstruction in the straight pipe section

The straight pipe section should be kept clean and free of foreign matter or blockage to ensure that the fluid flows through the electromagnetic flowmeter without interference.

There is no external magnetic field interference in the straight pipe section

External magnetic field interference should be avoided in the straight pipe section, such as nuclear posture strong magnetic field equipment, power cords, etc. External magnetic fields may affect the accuracy of electromagnetic induction measurements in electromagnetic flowmeters. <>

The normal requirements of electromagnetic flowmeter are 10d before and 5d after 5d, d is the diameter of the pipe, in mm.