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Capacitance Type Level Transmitter

Capacitance level sensors are a proved, as well as cost-effective solution for level measurement and point level detection in liquids and bulk solids. Various transmitters for continuous level measurement and switches for point level detection are available. The measurement of interface is also possible.


Capacitive level sensors are operated by two electrodes forming a capacitor, often in the form of two parallel metal plates with insulating (non-conductive or “dielectric”) material separating them. In the most basic sense, capacitors store electrostatic energy in an electric field.

The principle of capacitive level measurement is based on the capacitance change of a capacitor. The probe and the tank wall form a capacitor whose capacitance is dependent on the amount of product in the tank: An empty tank has a lower, a filled tank a higher capacitance.


  • Supply voltage: 20…255 V AC / 20…50 V DC
  • Ambient temperature: –30…+65 °C
  • Process temperature: –30…+235 °C
  • Process pressure: 16 bar
  • Output: relay (SPDT) or electronic switch (SPST)
  • Process connection: ¾", 1", 1 ½"
  • Ingress protection: IP67
  • Ingress protection: IP67

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