Working principle

		RF Admittance is a static level sensor with no movingparts.  Its sensing parts are:-
		Earth Extension (body)
	Compensation Shield
		Sensing Rod
		These parts form three capacitances:-
		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 themeasurement. shield-earth capacitance is ignored by circuit. This removes the effect of material coating on probe.
Bulk is considered as fill-level and "wet" signal is issued			coating is ignored asinsignificant capacitance and "dry" signal is issued

Applications

• Suitable for all sticky/non-sticky bulk solids & liquids.
• Suitable for side as well as top mounting.
• Process temperature max 600 ºC (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 connection like Threaded/Flanged etc.