Malvern Insitec Ensemble Particle Concentration Size EPCS Systems

6 Malvern (Insitec) Ensemble Particle Concentration Size (EPCS) Systems 

Insitec now forms part of Malvern Instruments but is still based in California for process and laboratory R D. The EPCS are laser-based instruments for in-line particle measurements that provide information on particle volume concentration and size distribution. EPCS instruments are part of the larger group of electro-optical instruments (MALLS) whose principle of operation is based on light scattering from a group (or ensemble) of particles. Unlike other instruments operating on this principle, the EPCS can perform direct measurements of particle laden flow stream provided the concentration is within operating limits. 

Malvern Insitec) EPCS-F is designed for powders in the size range of 0.2 pm to 1000 pm [202]. Partiele measurements are made at rates up to 500 per second with immediate display of particle size distribution and characteristic diameters. Specific values or points on the particle size distribution are continuously fed back to the user or to a process control system. Particles with different refractive indices and aspect ratios up to 2 1 can be measured. 

The instrument consists of an optical head with a purge gas over the lenses to reduce coating by the powder stream, an interface box, computer and 

The process control display is divided into three sections. Six process control variable displays are shown at the top of the screen. Variable displays reflect the most recent measurements of the particulate. A time 

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