Why is the grounding of the electromagnetic flowmeter important? How to ground?
In actual work, the measurement results of vortex flowmeter are independent of the velocity distribution, fluid pressure, temperature, density, viscosity, etc., and the range can be modified on-line according to the actual needs of the users.
There are no movable parts in the pipe of electromagnetic flowmeter, and there is no flow resistance component. There is almost no additional pressure loss in the measurement. On grounding ring selection, the following to do a brief introduction, vortex flowmeter for novices and other familiar with the relevant knowledge.1. protection ring: F46 lining sensor should use protective grounding ring, fixed on the flange by screws, protect the inner flange from damage.2. ground ring material is stainless steel 1Cr18Ni9Ti, special requirements can be explained separately when ordering.3. standard grounding ring: in plastic and cathodic protection pipes for insulation and insulation in the case of electrolytic corrosion, the earth ring must be installed on both sides of the sensor.4., with the neck protection ring: if the media wear stronger, should use a neck protection ring to protect the lining.
How to choose the earth ring of electromagnetic flowmeterAt present, the electromagnetic flowmeter is mainly designed for the water metering trade of water supply enterprises. It has the ability of waterproof, anti-corrosion, anti-interference and lightning protection.
Because its potential signal is small signal, encounter interference, immediately wash out the normal signal. The grounding can avoid the potential produced by the erosion of the fluid in the pipeline, and at the same time, the zero of the measuring potential is the same as the zero of the medium, and the vortex flowmeter avoids the error of the poor students.It is equipped with a grounding ring, and then connect the earth ring to the pipe. If it is lined with a third electrode to ground.
