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1.
Introduction
The ITX sensor is designed to measure suspended solids concentrations in liquids.
Combined with the BB2 control box, the sensor is used to measure suspended solids
content as a function of the ability of suspended materials to absorb and reflect NIR-
light (Near Infra-Red).
2.
A few words about this manual
This manual details installation procedures and operational features of the Cerlic ITX
sensor. Menu navigation and technical data for the BB2 control box can be found in the
BB2 service manual
.
3.
Design
The ITX sensor is manufactured with 316SS (SS2343) stainless steel. The inside of the
sensor is designed to achieve the highest self-cleaning effect, providing an exact and
reliable measurement with the least possible maintenance under critical applications.
The measuring lenses within the housing are made of glass. The electronics and optics
are protected in the rugged casing, ensuring its reliability in very demanding
environments.
The sensor has a fixed, shielded 10 m (33’) cable used for signal transmission between
the sensor and the BB2 control box. The cable sheath is made of Hytrel and is highly
resistant to aggressive materials and fluids.
4.
Measuring principle
The ITX measures transmitted light through the liquid. The measuring principle is based
on the suspended particles’ ability to absorb and reflect NIR (Near Infra-red) light. The
light source is a light emitting diode that pulses and emits monochromatic light with a
wavelength of 880 nm. The detected measuring signal is inversely logarithmical
proportional to the consistency or suspended solids. Signal treatment or linearization is
done within the BB2 control box.
Cross-section of measuring gap.