LDG electromagnetic flowmeter zero point instability phenomenon solutions

LDG electromagnetic flowmeter has stable performance and is widely used. Electromagnetic flowmeters can be found in places with hygienic requirements such as the pharmaceutical industry, food industry, and bioengineering. However, during the feedback process with users on actual on-site applications, technicians found that there would be some factors existing in actual working conditions that would affect the measurement, and the users' expectations could not be met. Below, the technical editor of Smet Flowmeter will share with you a detailed analysis and solution to the problem that the electromagnetic flowmeter cannot withstand negative pressure. The advantages of LDG electromagnetic flowmeter for chilled water detection: such as: no pressure loss, high accuracy and good stability. However, due to the characteristics of chilled water, some issues should be paid attention to when using electromagnetic flowmeters. The first is the internal problem of the electromagnetic flowmeter. Pay attention to the problem of negative pressure in the memory. When the measurement medium is corrosive to a certain extent, we need to use polytetrafluoroethylene memory material. However, electromagnetic flowmeters made of PTFE material cannot withstand negative pressure.

LDG electromagnetic flowmeter has two ways to solve the problem: 1. Change the original vent valve to a one-way valve (check valve). When a slight negative pressure occurs in the pipeline, the check valve automatically opens , sucking in air from the atmosphere, thereby ensuring safety. 2. The disadvantage of using skeleton memory is increased investment cost. The above are the things that the editor should pay attention to when measuring chilled water with electromagnetic flowmeters. Another flow meter suitable for chilled water measurement is the transit time ultrasonic flow meter. There are also some issues that should be paid attention to during use. Users should have a date for inspection and maintenance of the electromagnetic flowmeter, otherwise it will not work properly.