International Processing Trade Fair for Powder, Bulk Solids, Fluids and Liquids

26 - 28 September 2023 // Nuremberg, Germany

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Exhibitors & Products POWTECH 2023
Zoom Image LOGO_Inline probes for reflectance and transmission

Inline probes for reflectance and transmission

LOGO_Inline probes for reflectance and transmission

Inline probes for reflectance and transmission

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Reflection probe RPMP for opaque media and transmission probe TPMP for transparent/clear media are melt measuring probes specially developed for use in extruders, for temperatures up to 400 °C. Both probes can be easily integrated into any extruder. All that is required for the RPMP is a free 1/2"-20UNF threaded hole (typ. Dynisco) and two opposite threaded holes for the TPMP.

RPMP stands for "Reflection Polymer Melt Probe", it is a reflection probe for use on opaque melts. The probe has six illumination fibers arranged in a ring and a central detection fiber for the reflected light from the melt. 

TPMP stands for "Transmission Polymer Melt Probe" and is a transmission probe for use on transparent melts. Two probes are positioned directly opposite each other. One transmits the light, the opposite one detects the incoming light through the melt (transmitted light method).

In both variants, the probe tips are equipped with self-cleaning sapphire windows. Connected via fiber optic cable to the spectrophotometer "InSpectro X", the spectrum of the plastic melt is continuously recorded and displayed as a trend diagram to the reference value, e.g. with the color values (L*, a*, b*, dE*, yellowness etc.). It thus provides complete information on the homogeneity and stability of the plastic melt in the process, without loss of process control. This avoids contamination, false batch or drift. Deviations of this kind can be caused by variations in process parameters (temperature, pressure, speed, etc.) or by the wrong selection of screw components, variations in dosing and quality of raw materials used.

COLVISTEC Inline technology allows continuous monitoring of the production process and immediate intervention to prevent losses in the production and further development of production processes.

POWTECH offers concrete solutions for packaging-intensive industries. Industry guide


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