Electromagnetic flowmeter to solve the problem of field interference

Case introduction

What are the methods for electromagnetic flowmeters to solve on-site interference problems:

1. Methods for dealing with ground interference

1. Reasonable grounding: Proper grounding can reduce ground interference. Helps improve measurement accuracy. When installing an electromagnetic flowmeter, the ground wire should be grounded together with the pipe and instrument.

2. Reduce the influence of earth current: Earth current can easily cause errors in electromagnetic flowmeters. The influence of the earth current can be reduced by increasing the area of ​​the ground electrode or changing the structure of the ground grid.

2. Electromagnetic interference treatment methods

1. Shielding measures: Using metal shielding covers or metal mesh covers can reduce electromagnetic radiation interference.

2. Choose low-power equipment: Reduce the use of strong electrical equipment, especially unnecessary high-power equipment.

3. Reasonable wiring: Cable wiring should be carried out in strict accordance with specifications to avoid too many improper interfaces and long-distance parallel wiring.

3. Methods for dealing with fluid pulsation interference

1. Add flow limiting equipment: Install flow limiters, pulsation absorbers and other equipment to reduce fluctuations in liquid flow.

2. Increase the inner diameter of the measuring tube: Increasing the inner diameter of the measuring tube can reduce the impact of fluid pulsation and improve measurement accuracy.

3. Select the appropriate lining material: The selection of lining material should be combined with the fluid properties and environmental conditions to help reduce the impact of fluid pulsation.

In short, in order to effectively deal with the interference problem of electromagnetic flowmeter, the nature of the interference must be systematically analyzed and dealt with accordingly. At the same time, various measures should be used comprehensively according to the specific situation, and testing and maintenance should be carried out at any time during daily use.