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

 

 

 

 

 

Specification

 

▶Compact Version

 

▶ Remote Version

 

 

 

Dimension

* Acutal Product may have a tolerance slightly.

 

 

 

Installation

Below recommendation should be considered when installation.

HCC-96RF / HPC-96RF Series is generally used for high or low alarm with an installation on the side or top of the tank and can be also applied to metallic or synthetic resin tank because the ground electrode is installed in the level switch and measurement is not affected by tank material.

 

 

1. Top Mounting Installation

When the installation to the tank nozzle, the compensation electrode should be located, min. 100mm inside of tank. And also, sensing probe should be installed far over min. 500mm from tank side wall.

 

2. Side Mounting Installation

If the medium has a property of making a heavy precipitate layer, the level switch should be installed slopingly, about 45 degrees. And also, the protector should be installed at least 200mm above from the probe in order to protect the probe if the medium has high density.