Admittance Level Switch

Working Principle:- Bin Level Indicators is a static level sensor with no moving parts. Its sensing parts are:- Earth extension (body) Compensation shield Sensing rod These parts form three capacitance's Shield earth capacitance Shield sense capacitance Sense earth capacitance A Sine wave of high frequency is fed into both sensing rod as well as compensation shield. Voltage at shield is equal to voltage at sense, no effective current flows between sense and shield. This removes shield-sense capacitance from the measurement, shield-earth capacitance is ignored by circuit. This removes the effect of material coating on probe. Material is detected by measuring sense-earth capacitance. Applications:- Suitable for all sticky/non-sticky bulk solids & liquids. Suitable for side as well as top mounting. Process temperature max 600°C (ceramic insulation). Process pressure max. 15 bar. Minimum and maximum fail safe field selectable.
Features

• Compact size.
• Universal industrial power supply (12 to 80 VDC & 12 to 265 VAC).
• Low power consumption.
• Easy calibration.
• Active shield compensation against material build-up.
• Static charge safe for fly-ash, acids, plastic & other Applications susceptible to static charge/electricity.
• Customized process connections like Threaded/Flanged etc.