The W.S. Tyler’s Brand Story

For over 140 years, W.S. Tyler® has been a leader in the design, engineering, and manufacturing of woven wire cloth and mesh materials.

You may have heard about W.S. Tyler’s quality products, their innovative approach or their award-winning customer service. But you’ll likely remember them for their relentless passion for precise engineering. That’s why at Nako-M-link, we are privileged to be one their trusted partners in representing the W.S. Tyler brand in Asia.

Particle Analysis Equipment





Due to its flexible, versatile and exclusive optical properties, W.S. Tyler® woven wire mesh is an optimal material in the world of architectural mesh, agriculture, transportation, as well as food and beverage industries and others.



In the field of conventional particle analysis, W.S. Tyler, alongside parent company Haver & Boecker, has been a market-leading manufacturer of test sieve shakers for decades. As a result, in the early 90s, our accrued expertise and pioneering spirit provided the ideal platform for exploring the next frontier in particle analysis: integration of powerful computing technology.

Our wide product range, consisting of future-oriented, expandable modular units and systems, guarantees flexible solutions for all applications. Our photo-optical systems have proven their worth with hundreds of minerals in various sectors. Whether in the form of standardized laboratory/online units or customized industrial units, from pharmaceuticals, food, and non-metallic minerals to the plastics and fertilizer industries, W.S. Tyler delivers.


Our design department, in-house toolmaking, mechanical engineering, and our own electronics and control specialists ensure every W.S. Tyler CPA system meets the requirements imposed upon it. Engineers develop customized equipment, specialized design solutions, and individual control systems for you and, if required, take care of the connection to the PLC.

We work with our partners from the Haver Group in the development and improvement of CPA technology, including the Machinery Divisions in Münster and Oelde, as well as Haver Engineering GmbH in Meißen, which is recognized as an affiliated institute of the Technical University Mining Academy of Freiburg.


All CPA Systems

CPA Computerized Particle Analyzer


The patented W.S. Tyler CPA measuring process is used to analyze the grain sizes and shapes of dry and non-agglomerating particles of bulk materials in the range from 10μm to 400mm. The robust technology is virtually maintenance free; therefore, it is absolutely fail-safe and works reliably, even under extreme conditions. The CPA technology can be used to analyze coarse and fine material, such as gravel, sand, coal, plastic granules, wood chippings, chemical and pharmaceutical products, fertilizers, and much more.

W.S. Tyler CPA systems are based upon energy-saving, low-maintenance technology that minimize operating costs. They are ready to connect to a PLC control system in their standard configuration and can also be integrated into online processes at a later date without modification. The results produced by the device are comparable with a conventional sieve analysis, but offer several decisive advantages, including high reproducibility of measuring results, enormous time saving, additional information related to grain shapes, and the number of particles.


W.S. Tyler CPA measuring instruments are based on digital image processing. A high-resolution, digital line-scan camera captures the particles in free-falling bulk materials against an LED lighting array. With a recording frequency reaching 28,000 line scans per second, the scanned lines are combined by the CPA to form an endless data record. The shadow projections of the particles are evaluated in real time in parallel with the measuring process. Up to 10,000 particles can be detected, analyzed, and counted every second. Due to a GigE camera interface, the CPA devices can be operated using a notebook without additional hardware modules, such as a camera card. The GigE technology has a high transfer rate of up to 1,000 Mbit per second.


The CPA CONVEYOR measuring process was specially developed for analyzing elongated materials where results could be falsified due to overlaying and rotation of particles while the image was being tested. During the process, the material sample is fed via a metering channel where it passes onto a faster, running conveyor belt. The resulting difference in speed separates the particles and brings them into a stable orientation (maximum length to maximum width) before the digital image analysis occurs. The CONVEYOR’s characteristics virtually eliminate random rotation of particles as they are measured.


All W.S. Tyler CPA units feature real-time function and work with a single line-scan camera; therefore, every particle in the grain size range can be measured and the results used in size and shape analysis. Double detection due to individual images overlapping is ruled out, as are partial ranges and improper measurements of truncated particles. In addition, the real-time function also enables all CPA units to be used as particle counting devices.


The CpaServ software deployed in the W.S. Tyler CPA systems is easy-to-use, responsive, and runs under most Windows operating systems. Owing to the software, a wide range of particle specifications can be analyzed. The CPA’s individual particle memory allows different grain shape values to be evaluated for every particle measured and statistical means to be determined in freely selectable grain size classes.

Each particle is fully scaled and presented in the particle list. The details regarding particular grain sizes and shapes are stored and can be used for further analyses. Input data errors can be minimized given the software’s ability to cut and paste into documents or tables, such as Excel. Furthermore, multifarious options for filtration enable a customized presentation of results.

W.S. Tyler CPA industrial units are built to meet the demands of large-scale production facilities, laboratories, and technical centers. Like our other offerings, the industrial units run on CpaServ software and can be used as particle counting devices with line-scan camera technology. When combined with our peripherals, its modular design also empowers individual online solutions.

The W.S. Tyler CPA 2-1 ONLINE, which analyzes bulk material in the 34μm to 25mm measuring range, is designed for continuous quality control throughout production.

In a permanent measuring standby mode, the unit analyzes regularly fed samples without interruption. Given its durable construction, it is resistant to adverse conditions, such as heat, dust, or humidity.

The W.S. Tyler CPA 4-1 analyzes grain sizes and shapes in the measuring range from 63μm to 50mm. The unit’s robust design lends itself to large sample quantities.

The W.S. Tyler CPA 4-2, featuring two measuring ranges in the same unit, separately analyzes grain sizes and shapes of fine and coarse materials. Examples include sand and grit from 35μm to 15mm or gravel and crushed stone from 91μm to 90mm.

The W.S. Tyler CPA 4 CONVEYOR functions like the CONVEYOR measuring process, but was designed to handle coarser, elongated up to 220mm. It is particularly valuable in the analysis of the lengths and widths of wood chips.


The range of W.S. Tyler CPA units is complemented by various peripheral devices. Moist materials, for example, must be dried before undergoing photo-optical particle analysis. For that reason, we have developed the W.S. Tyler HSD, or high-speed dryer, which dries mineral bulk material in a minimal amount of time. Conveyor speed and heating temperatures can be adjusted to suit the material.
The high heating capacity and air quantity also guarantees optimal flow rates. The HSD is frequently used for pre-drying wet gravel before conducting analysis with the W.S. Tyler CPA 4-1; however, it can be used in tandem with all CPA units or separately for the hasty drying of bulk material.

The W.S. Tyler DMS is a double-deck screening machine for pre-screening with two separating cuts. By cutting the material in two places, the feed material can be divided into three fractions. The two screens can be individually designed and tensioned by our screening service. Rubber balls or special, ultrasonic modules can implement ultra-fine separating cuts and enable automatic cleaning of the screen.

The prescreening function of the W.S. Tyler DMS is used in combination with a CPA particle measuring unit to screen the fine content from a material sample, leading to significantly reduced measuring times. In order to achieve optimum utilization of the classification area, we recommend additional pre-dosing with the magnetically driven W.S. Tyler EMZ feed trough. Its large material hopper makes it the ideal buffer for downstream processes and, in step mode, it conveys all kinds of bulk material.

As part of continued time-saving measures, we developed the W.S. Tyler AS (auto sampler) to automatically feed CPA devices with material samples. Six, twelve, or twenty-four samples, corresponding to our AS 6, AS 12, and AS 24 models, can be measured around the clock without compromising capacity. The W.S. Tyler AS is controlled with our CpaServ software via an interface. The device can also be used to collect retain samples and as a laboratory or technical center unit.

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