Function
The grounding ring is in direct contact with the medium through the grounding electrode and then grounded to the instrument flange through the grounding ring to achieve equipotential with the ground to eliminate interference.
Grounding ring uses
It is often not suitable to add a grounding ring on some occasions. For example, when measuring strong corrosive media, the pipeline will often use PVC or PTFE-lined electrodes to choose precious metals.
Especially for large diameters, it is impossible to match The grounding ring is too expensive. In this case, three electrodes are generally selected, two of which are used for measurement and the other for grounding. Generally, if the pipeline is made of metal material, it is not necessary to equip the grounding ring. Connect the flange of the flowmeter to the pipeline and then ground it.
It can also be used well, especially in the case of a large diameter.
If the diameter is small, the grounding ring does not matter, and the cost will not be too much.
In addition, some users are not measuring strong corrosive media, but their pipes are non-metallic.
At this time, a grounding ring must be equipped. Grounding is very important for electromagnetics.
The interference of the on-site magnetic field is fatal to electromagnetics because we can use certain measures to shield the electric field, but we cannot shield the magnetic field, so the electromagnetic flowmeter must be installed to avoid strong magnetic fields.
