Anti-disturbance problem of electromagnetic flowmeter (4)

1.2 External disturbance

The disturbance sources outside the system can be divided into:

(4) Radio frequency interference. Communication equipment, radio broadcasting, TV, radar, etc. will emit strong electric waves through antennas.

(5) Electrostatic discharge. With the use of modern chip technology, the components have become very dense at a small number of scales. These high-speed, millions of transistors are very sensitive and are easily damaged by external electrostatic discharge.

(6) Car clutter. Clutter in the VHF to UHF band occurs during the operation of the car.

(7) Discharge disturbance. Partial discharge can be divided into positive corona discharge, negative corona discharge and spark discharge.

(8) Glow discharge. Glow discharge is gas discharge.

(9) Arc discharge. Arc discharge is metal mist discharge, and the most typical arc discharge is metal arc welding.