Particle Size Analysis

The HAVER CPA measuring process is used for dynamic image analysis of grain sizes and grain shapes of dry and non-agglomerating particles of bulk materials. When fitted with the appropriate HAVER peripherals, this process can be used as a laboratory, technical centre or online version in different fields: gravel, sand, coke, coal, plastic granules, wood chippings, chemical and pharmaceutical products, fertilizers, foodstuffs and many more.


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HAVER CPA measurement principle

All HAVER CPA (Computerized Particle Analysis) measuring instruments utilize digital image processing technology for the dynamic image analysis of particles. The material sample is optimally dosed by a vibrating feeder whose amplitude is automatically regulated. In the measurement channel the particles fall between an LED light source and a digital line-scan camera and are scanned using the backlight technique as they free fall. The scanning range of the line scan camera is larger than the measurement channel width so that no partially scanned or completely undetected particles at the edges falsify the results.

Unlimited images

Extract from the particle list

The raw data coming from the camera do not form any single images with a certain frequency (fps), rather they generate an unlimited continuous image. Thus technology-related cut-off or double-measured particles are excluded. As opposed to other methods each particle is recorded, assigned an ID, and is saved with all measured values.

Highest precision particle detection

The high-tech components and the high resolution used over the entire span of the measurement range allow the highest precision particle detection. This leads to the recording of all particles within the measurement range, and for them to be available in the highest quality and with all details. Also the smallest sample sizes can be measured and provide reproducible results.


The HAVER CpaServ software is the artificial intelligence behind the CPA instruments and allow easy accessibility via the user surface. Using the software, single measurement operations can be defined and checked later by the software and to run automatically. All HAVER REAL TIME analysis data are processed in real time and are made available in a variety analyses and graphical depictions.

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Haver & Boecker

With our team of qualified engineers and specialists, we develop and produce packing and screening machines for the raw material processing industry. We offer innovative solutions for packing, storing, logistics and processing technology. We build the originals with a name that is known worldwide. Two company divisions under one roof We are a traditional family-led midsize company. Under a single roof we unify the company divisions of Wire Weaving and Machinery. The Wire Weaving Division produces thousands of various types of wire mesh for screening, filtration and measurement technology. Also in the area of architecture we have an established position. The Machinery Division is the specialist for the sector of packing and mineral processing technology. It produces and markets machines and plants for filling and processing loose materials in bulk. Our guarantee for success Passion for innovation and openness to the world have served as the guarantors for success since HAVER & BOECKER was founded in 1887. Moreover, there is the backing from the proprietary family and the company's ability to quickly adapt to the drastically changing economic challenges. Close to you worldwide As an ambitious global supplier, we constantly develop trend-setting products and production processes that not only fulfil the needs your markets, but that are also optimised to meet the needs of growing globalisation. Our international activity guarantees you constant contact and support that fulfil your expectations and requirements.


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