Polymer Melt Particle Sensor PMP 694
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TOPAS S Polymer Melt Particle Sensor PMP 694 Special Advantages Online measuring method Օ Fast, touch free optical measuring method Low dependency on particle material Օ Measurements under extreme conditions (up to 290°C and 150bar) direct in flowing, transparent melts Standard sensor port !"-20UNF, other dimensions on customer request Օ Can be adapted to different extruders and polymer processing machines Robust industrial design Օ User-friendly Windows compatible control software PMPWin Applications Measurement of particle sizes as well as concentrations in transparent fluids Օ Monitoring of production processes Continuous pureness analysis (gas bubbles, fish eyes, black specks, ...) Օ Detection of homogeneity fluctuations Determination of optimal extruder configuration or extrusion conditions Օ Reception and outgoing control Polymer Melt Particle Sensor PMP 694 The Polymer Melt Particle Sensors of series PMP 694 have been developed for online and inline monitoring of particle situation as well as for performing purity analysis with high sensitivity and resolution. With single particle counting a common method is used and applied to a new demanding measuring task in industrial environment, especially polymer processing. Measuring Method Particle sizing methods based on single particle counting classify a physically measurable quantity according to particle size independently and under no assumptions. Such methods provide high sensibility and accuracy combined with very quick response of a particle system analysis. Single particle detecting sensors of series PMP base on light extinction method and have been especially developed for measurements under industrial conditions in flowing transparent polymer melts or similar fluids. Process conditions are characterised by temperatures up to 290°C, pressures up to 150 bar and high viscous materials. The Polymer Melt Particle Sensors can easily and directly be adapted to extruders and other machines via common screw threads 20UNF) by means of screw in adapters. Optical Principle

Principle Operating Principle Examples of Applications For the PMP 694, the physical effect is used where an illuminated particle will cause a definite light extinction (blockage) corresponding to its cross section and size, respectively. For this, the particle system continuously streams through a sensing zone, inside the process line or a measuring cell. Particulate impurities (Black spots, fish eyes, gas bubbles, etc.) in polymer melts can influence besides optical (transparency) also other product properties such as impact resistance, isolation properties, inflation capability of blown...

Software PMPWin Topas Particle Analysis Software PMPWin Based on practical knowledge Topas developed for sensor series PMP 694 the user-friendly and capable control and analysis software PMPWin. It enables easy and fast execution of a measurement but has also some degrees of freedom for experienced users, e.g. free determination of thresholds, administration of user profiles. PMPWin works on a signal unit with integrated industry standard PC, display, and signal-I/O-card. Substantial features of software PMPWin: User interface under Windows 2000/XP Օ Realtime signal analysis of raw data...

Spcifications Industrial Application Example Spcifications Measuring size 20 to 500 |jm range Concentration range max. 150 particles/cm3 Cross section of 400 x 200 jim2, custom-measuring beam designed Light source 30mW laser diode, 660 nm Particle size classes Custom-designed Software Data acquisition and control software PMPWin Interfaces LAN, USB Power supply 110...230 VAC, 47...63 Hz Dimensions of 450 x 320 x 450 mm3 signal unit: w x d x h Weight of signal unit 15 kg Literature [1] Patent-registration DE 35 17 099 A1 [2] M. Stephan et al: Realtime Process and Quality Control in Polymer...