HCC(HPC)-96RF-R Series
HITROL CO., LTD. 3
HCC (HPC)-96RF-R Series is a radio-frequency type level switch that detects the level of the
measured object by detecting the change in capacitance value due to the dielectric constant of
each object. As compensation electrode method is adopted, repetitive operation can be smoothly
operated even if the content is attached to the sensing part due to the humidity around the
sensing part depending on the content itself or the temperature.
HCC-96RF-R Series compares the signal flowing from active sensing probe towards ground
with reference RF signal, when the medium is detecting. 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. (This type can only be
applied to solid/dust.)
For cylindrical tanks, the capacitance can be obtained as shown below.
■ Solid structure and long service life
■ Applicable to high temperature
■ Explosion proof version (HPC Series)
■ Good reliability of level detection
■ Prevention of malfunction caused by material build-up on the sensor
■ Applicable to metallic or synthetic resin tank also
C = ε
C : Capacitance (pF)
ε : Permittivity
L : Probe Length
D : Tank Diameter
d : Probe Diameter
Overview
Characteristic
Operating
Principle and
Composition
Process Conn.
Sub Probe
Inactive Rod
Insulation
Sensing Probe
Housing
