Overview

HCC(HPC)-96RF Series is a Radio Frequency Type Level Switch and it detects level of a medium by sensing of capacitance value change caused by a dielectric constant of each medium.

Characteristics

- Prevention of malfunction caused by material build-up on the sensor. (compensation electrode)

- Widely used for various type of medium such as solid and powder.

- Applicable to high temperature.

- High sensitivity and stability.

- Semi-permanent life cycle due to moveless parts.

- Easy installation and calibration.

- Operating can be checked at the site.

Operation Principle

When the level switch mounted on the tank or other container is touched by medium, it compares the signal flowing from active sensing probe towards ground with reference RF signal. Since all material has unique dielectric constant (relative permittivity) and conductance value that are different from air, the impedance of the signal circuit is changed when medium touches the probe. This change causes a shift in phase of the RF signal. A phase difference between the active signal and reference signal causes the output circuitry to operate.

Applications

- Ash storage tank for power generation process which requires high reliability

- Cement storage tank

- Pulp and paper industries

- Medium forming a material build-up on the sensor by the change of tank condition

- Powder and particle