Endress+Hauser Capacitance Level Measurement

Capacitive level measurement devices with the Liquicap product line (continuous level measurement) from Endress+Hauser offer a simple, economical, yet versatile solution for monitoring and measuring liquid levels. This technology is especially suitable for small tanks and media prone to sticking or forming deposits

In addition to continuous measurement, capacitive level devices such as Liquicap, Liquipoint, Minicap, and Solicap also provide high and low level alarms (point level detection) for applications involving liquids, bulk solids, including corrosive media or those with high adhesion. With millions of applications worldwide, capacitive solutions have proven to be reliable, cost-effective, and easy to implement.

Measuring principle of Capacitance Level Measurement

The measurement principle is based on the change in capacitance of a capacitor:

• • The probe and the tank wall form the two plates of a capacitor.
  • When the tank is empty, the capacitance value is low; as the tank fills, the capacitance value increases proportionally to the material level in the tank.
  • This capacitance signal is analyzed by the device to accurately determine the level of liquid or bulk solid.
  • Additionally, this technology also enables measurement of the interface between two different liquid layers.

Continuous level measurement sensor based on capacitive principle

Point level detection sensor based on capacitive principle for applications with adhesive media

Advantages of Capacitance Level Measurement

• • Continuous level measurement or point level detection for liquids and solids.
  • Flexible probes adaptable to various applications and media.
  • Reliable measurement even in harsh environments: high viscosity, buildup, or corrosive conditionsn.
  • Easy installation and operation, saving time for engineers and plants.

 Applications of Capacitance Level Measurement

• • Applications in small tanks or with media prone to buildup.
  • Level monitoring in chemical, food & beverage, pharmaceutical, and water & wastewater industries.
  • Measurement of liquid-liquid interface in production processes.
  • Suitable for corrosive media or those with high viscosity.

With capacitive level and point level devices like Liquicap, Liquipoint, Minicap, and Solicap, Endress+Hauser offers an economical, flexible, and proven solution. Whether in harsh environments or applications requiring high reliability, capacitive technology consistently ensures efficiency, stability, and easy integration into existing plant systems.

Portfolio of Endress+Hauser Capacitance Level Measurement

     1. Capacitance continuous level measurement / point level detection for liquids

     2. Capacitance point level detection for solids

Installation of Capacitance Level Measurement

Liquicap FMI51 capacitive level measurement device in a pharmaceutical plant

Minicap FTC262 capacitive point level detection device providing level alarms in solid material storage tanks

Liquipoint FTW23 capacitive point level detection device used in the Food & Beverage industry for conductive liquids

Liquipoint FTW33 capacitive point level detection device for viscous liquids in the Food & Beverage industry

References: Endress+Hauser Capacitance Level Measurement