TOPAS i® Particle Analysis System for Fluids Sries FAS Main Advantages Non touching, optical measuring method with quick response 镕 Wide concentration and particle size range Extreme low dependency on particle material by the use of especially developed patented optics Օ Optimally designed sensing volume No assumption of distribution function Օ User friendly Windows® software Easy to use Օ Robust, small dimensions and low weight Application Measurement of particle size distributions as well as concentrations Օ Cleanness analysis Determination of separation efficiencies Օ Flocculation investigations Analysis of biological or bacterial systems Particle Analysis System for Fluids FAS 362 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 particle system analysis. A further advantage is that the correlation between optical effects and particle size can transparently be described. Based on such optical, single particle counting methods the series FAS was developed for particle sizing as well as concentration measurements with high sensitivity and resolution in a wide concentration range. CD Photo Detector Light Source Determination of particle cross section or diameter Scheme of the Optical Unit

Principle Principle Options The measuring instrument of the sries FAS can be divided into two main components: the sensor and the signal processing unit. The sensor is mounted separately and contains the optical measuring setup (light source, measuring cell, photo detector and amplifier) and a sample unit with glass vessel, stirrer and a magnetic valve for sample flow control. For the series FAS, 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 is...

Software PASWin Topas Particle Analyzer Software PASWin Runs under Windows® Օ Calculation of diffrent type particle size distributions weighted by number, surface or volume Display and printouts as graphics or table 镕 User defined integration limit, channel resolution, logarithmic and linear size axis Background measurement and real-time subtraction Օ Multi tasking Data exchange with other Windows® applications (clipboard, DDE) Օ Communication with micro balance via RS232 interface (optional) for precise flow rate measurement Data logger for long term investigations saves single measurement...

Spcifications Calibration by the user A transfer model serves the purpose of assigning particle characteristics (e.g. equivalent particle diameter) to a measurable quantity (e.g. pulse height. Such a model method can be a mathematical model or it can be based on the direct assignment of a measurable quantity to a characteristic of a particle. The direct assignment is called calibration. By means of high-resolution calibration (as high as possible) is minimized the error between measured and calculated values. Furthermore, repeating the measurement of a selected reference material system is used...