Applications
Level measurement of liquids, solids, slurries and interface detection
Features 
Principle of Operation
Every substance has unique dielectric constant (dK). The sensor uses the difference in dK between material and air or vacuum to determine material presence.
Different types of oscillation and detection circuits as well as electrodes are available to suit a wide range of materials and process conditions.
Type R (parallel resonant circuit type)
A parallel resonant circuit is used, where a high frequency oscillation circuit and a synchronization (detection) circuit are separated. The detection circuit is synchronized with the oscillation frequency to create the largest high frequency voltage.
When the measured material reaches the detection circuit, synchronization is broken, decreasing high frequency voltage at the circuit.
This decreased voltage is rectified, and the decreased amount is dc amplified to give output signals.
Type S (series resonant circuit type)
Series resonant circuit is used. The circuit has a detection electrode as a part of the oscillation circuit. Change in the electrode capacitance (△C) renders the circuit to oscillate. The circuit starts oscillation and gives output signals when the material reaches the electrode.
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Measurement of level in a tank using capacitive type level Capacitance.
· Conductivity. Capacitance Level Measurement: Capacitive level
transducer is an example of indirect measurement of level. Capacitance
level sensors are used for wide variety of solids, aqueous and organic
liquids, and slurries. The technique is frequently referred as RF as radio
frequency signals plied o ... How Capacitive Liquid Level Sensors
Work: Capacitive Fluid The storage
capability of a .. . A capacitor is made up of two
conductive plates which are separated from each other by a dielectric.
Level Sensors easily mount to the outside of a container and measure through almost
any non-metallic material. They are custom designed and optimized for a range
of applications such as medical devices, pump controls, beverage machines etc.
A design can use a traditional printed circuit board for a flat ... Capacitive
level measurement - VEGACAL | VEGA | VEGA Capacitive level sensor as
cable probe or rod probe for level measurement in bulk solids and liquids. Operating
Principle of Capacitance Level Sensors ~ Learning Capacitance level instruments
operate on the basic principle of the variation of the electrical capacity or capacitance of
a capacitor formed by the sensor, vessel wall and
dielectric material
Capacitive level sensors CLS-23 - Dinel, s.r.o. capacitive
level sensor for sensing various types liquids, detection of various
types electrical conductive or non-conductive liquids (water, water solution,
cooling liquids, oil, ets.) Level Sensors » Gill Sensors & Engine Controls Reliable
and highly accurate Capacitive liquid level sensors for
demanding applications. Ourcapacitive level technology accurately
measures the change in fluid level within standard and irregular tanks. Capacitive-Based
Liquid Level Sensing Sensor Liquid level sensing using capacitive sensing
technology. •. Out-of-Phase (OoP) technique eliminates any proximity
interference such as a human hand either nearby or in contact with the
container. •. Rigid-flex circuit allows the sensors to be placed on various
shaped surfaces. •. Liquid height resolution <1mm. •. Includes ...
