over 3 years her

Capacitance Level Measurement Working Principle

Capacitive level transducer is a good example of indirect measurement of level

Capacitance level sensors are useful for wide variety of solids, aqueous and organic liquids, and slurries. The technique is often referred  as RF as radio frequency signals put on the capacitance circuit. The sensors may be built to sense material with dielectric constants only 1.1 (coke and fly ash) and as high as 88 (water) or more. Sludges and slurries such as dehydrated cake and sewage slurry (dielectric constant approx. 50) and liquid chemicals such as quicklime (dielectric constant approx. 90) can be sensed. Dual-probe capacitance level sensors can be used to sense the interface between two immiscible liquids with substantially different dielectric constants.

Since capacitance level sensors are electronics, phase modulation and the usage of higher frequencies makes the sensor suited to applications where dielectric constants are similar.

Working Principle:

The principle of capacitive level measurement is founded on change of capacitance. An insulated electrode acts as one plate of capacitor and the tank wall (or reference electrode in a non-metallic vessel) acts as another plate. The capacitance is dependent upon the fluid level. An empty tank includes a lower capacitance while a filled tank includes a higher capacitance.Hit on capacitance level transmitter to explore more about our services and sites. Hope you ll like our more services.

 An easy capacitor contains two electrode plate separated by way of a small thickness of an insulator such as solid, liquid, gas, or vacuum. This insulator is also called as dielectric.