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Dry linear samplers

Sample with confidence with our dry bulk linear falling stream samplers

Accurate sampling is essential for a well-run mining operation. Reliable sampling results enable better decisions regarding quality control, leading to improved performance and a stronger bottom line. Our Essa® dry bulk linear falling stream samplers provide a highly accurate and trouble-free solution to your sampling needs.

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Key benefits of our dry linear falling stream samplers

  • Accurate sampling according to Theory of Sampling (TOS)

    The cutter for our Essa® dry linear falling stream samplers is positioned at the discharge point of the material to ensure truly representative sampling. When designed and installed correctly, every particle has an equal chance of being sampled, giving you the accurate results you need to help with decision-making, metallurgical accounting, or inventory valuation.

  • Low maintenance

    Essa® dry linear falling stream samplers require minimal maintenance, minimising ongoing operational costs and delivering accurate, high-quality sampling results with minimal effort.

  • Robust and reliable in harsh conditions

    Accurate samplers are ineffective if they cannot withstand the application’s operating conditions. After decades of supporting the mining industry, we understand just how harsh those conditions can be, and we make our Essa® dry bulk linear cross stream samplers to match.

Our dry linear falling stream samplers

Essa® Belt Drive Linear Sampler (BDLS)

The Essa® dry bulk linear falling stream sampler is a full cross-stream sampler specifically designed to sample falling streams from conveyor head chutes. The drive assembly is installed above the sample stream discharge point and a precision-engineered cutter is bolted below the sampler cutter carriage. These samplers can be used for small- to large-tonnage primary applications, as well as for secondary or tertiary sampling.

  • Simple, robust low-maintenance belt drive mechanism
  • Resilient three-coat paint system finish
  • Hinged inspection doors allow viewing during operation
  • Hinged safety access screens

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Essa®  Synchronous Belt Drive (SBD) sampler

If your material-handling infrastructure requires a sampler position below the discharge point, the Essa® synchronous belt drive sampler is your best option. A single electric motor drives two synchronised toothed belts on either side of the ore stream. Typically used in high-tonnage shipment conveyors, this design allows the sampler drive and cutter to operate on the same plane across the ore stream.

  • Simple, robust low-maintenance belt drive mechanism
  • Resilient three-coat paint system finish
  • Hinged inspection doors allow viewing during operation
  • Hinged safety access screens

Essa® Moving Pipe Sampler (MPS)

The Essa moving pipe sampler is self-contained and ideal for sampling free-flowing granular solids. It is expertly manufactured with minimal moving parts for smaller-diameter pipework and is easily installed in a gravity flow, non-pressurised pipe system.

  • Electric braked gearmotor ensures uniform flexible pipe velocity
  • Pipe park positioned outside the cutter aperture
  • Inspection door and top hatches allow cutter maintenance

Maintenance & service of our dry linear samplers

We have been supplying dry bulk sampling systems to the mining industry for decades. When you choose FLS to supply your sampling system, you don’t just get a sampler; you get access to those decades of sampling experience. This allows us to offer unparalleled support, from initial sampler design, selection, and installation to maintenance, spare parts, troubleshooting, and optimisation—all backed by our time-tested sampling knowledge and real-world expertise.

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Frequently asked questions

FAQs for dry linear falling stream samplers

A dry bulk linear sampler is a device used in various industries such as mining and mineral processing to collect representative samples of bulk materials for quality and compositional assessment before processing or shipment.

A dry bulk linear falling stream sampler works by moving a cutter linearly across a falling stream of materials to capture a representative cross-section of the material flow.

Selection of a dry bulk linear sampler should consider various factors, including material type and characteristics, the sampling application and objectives, operational conditions, and sampler features. FLS has decades of experience designing and supplying dry bulk sampling systems and can offer advice and guidance on all aspects of dry sampling system selection.