Instruction Manual

Instruction manual - HBCP – Compressor protection (001-UK) 4 / 9
WE INCREASE
UPTIME AND EFFICIENCY
IN THE REFRIGERATION INDUSTRY
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HBCP is an intelligent sensor with a built-in
microprocessor. It is designed to detect liquid
hammer in industrial refrigeration systems. The
output signal is an alarm signal for warning and
alarm respectively.
The sensor’s sensitivity is configurable based on
the capacitive measurement principle, and it can
react to just a few single drops. The sensor has a
built-in data logger so that the liquid hammer
history can be tracked in up to 16,000 data logs
with an optional sequence.
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The sensor is a capacitive sensor. The capacitive measurement principle is based on the electrical
properties in the proximity of a capacitor. A capacitor is an electrical component that is capable of building
and sustaining an electrical charge
Principally, a capacitor consists of two plates.
When a charge is applied to a plate, the other
plate will be charged with the opposite polarity
and retain the charge until it has been grounded.
The magnitude of the charge (the capacitance)
that can be generated depends, among other
things, on what is found between the plates.
The substance between the plates is referred to
as a dielectric.
Rather than two plates, the sensor for level
measurement is shaped as a cylindrical rod.
When liquid covers the sensor, the measured
capacity is changes.
The conductivity of a material can vary depending
on temperature, chemical composition, and the
homogeneity of the material, and therefore it can
sometimes require a different factory calibration.
HB Products sensors are calibrated so that they differentiate between conductive and non-conductive
liquids.
In refrigeration systems, the oil and liquid CO
2
are not regarded as conductive fluids, whereas refrigerants
such as ammonia, HFCs, and brine are regarded as conductive.
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The sensor consists of a mechanical part and an electronic part. These can easily be separated with a union
nut. The electronic part is designed in accordance with IP65 waterproof rating and to withstand vibrations.
The mechanical parts have been produced with AISI304/PTFE and tested to resist high pressures.
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The sensor is supplied with the latest firmware.
The sensor is configured with a configuration tool, "HBCP Tool", using a PC. It is capable of determining the
version that was supplied.