Automatic In-Line Seed Sampler

What is the Automatic In-Line Seed Sampler?

A device installed in a seed processing or conveying line that diverts timed increments into a collecting container. It is the right choice for representative sampling of continuous flows without manual intervention.

Overview

The automatic in-line sampler fits into a chute or pipe where seed flows, and a diverter or a scoop moves across the stream at set intervals to capture a proportional increment, which is deposited in a collection container. Because increments are taken throughout a batch, the composite reflects the whole throughput rather than samples from a few bags, and the timing can be linked to flow so that sampling is proportional to volume. Settings include interval, dwell time and scoop size, and the sampler can be programmed to fill one or several containers for replicate or retained samples. Enclosed construction prevents dust escape and moisture change, and surfaces are smooth to avoid seed damage. The device must be cleaned between varieties and after treated seed, and the diverter checked for wear, since a worn or badly timed scoop biases the sample. It is often combined with an automatic divider for large flows.

How does it work?

Representative sampling depends on taking many small increments from different positions in the lot and combining them into a composite, then reducing it without changing composition. Bag triers are pushed into sacks and withdraw a core that includes material from several depths, while multi-slot versions take a column at once. For bulk lots, a probe or pneumatic sampler withdraws grain from several points and depths, and automatic in-line samplers divert a measured portion of a flowing stream at intervals so that the whole throughput is represented. Composite samples are then reduced with a divider. A Boerner-type divider spreads material over a rotating cone so it falls evenly into a ring of containers, while a riffle divider passes it through alternating chutes. Both avoid the segregation that occurs when a scoop is taken from a pile.

What are the key features?

• Diverter takes timed increments from a continuous flow.
• Sampling interval can be linked to flow for proportional sampling.
• Composite reflects the whole throughput of a batch.
• Programmable to fill replicate or retained sample containers.
• Enclosed design limits dust and moisture change.
• Smooth surfaces avoid seed damage.

What are the technical specifications?

A typical automatic in-line seed sampler configuration offers sampling principle of Timed diverter or scoop in the flow, sample increment of 10–500 mL, adjustable, sampling interval of Programmable, flow linked, flow rate range of 0.5–50 t/h, collection containers of 1–5 sealed canisters and materials of Stainless steel contact parts. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Automatic In-Line Seed Sampler is used in seed processing line quality control, continuous lot sampling during conveying, treated seed production monitoring and certification sampling of bulk flows. Across the wider Seed Sampling Equipment class, laboratories also deploy it for seed certification sampling, seed lot intake inspection and laboratory submitted sample preparation.

Which standards and certifications apply?

Relevant standards and methods include ISTA Rules Chapter 2 (sampling), ISO 24333 (cereals sampling), ISO 6644 (automatic sampling), GB/T 3543.2 (seed sampling) and AOSA Rules for Testing Seeds (sampling). Certification candidates for this model are CE, ATEX or dust-rated options and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Take increments from the required number of positions and depths so that the composite is representative, and record the lot identity, number of increments and sampling date. Keep samplers clean and dry between lots, because a few seeds left in a trier or chute can contaminate the next sample, especially after seed treatment. Avoid sampling in rain or extreme humidity where seed moisture can change, and seal samples in moisture-proof containers immediately. Handle dividers so that all passages are full and free-flowing, and do not overload them. Submit the required mass, and retain a duplicate sample where the scheme requires it. Calibrate balance and weighing equipment used for sample mass, and train staff in the specific trier and divider technique so that results are reproducible between operators.

How do I select the right Automatic In-Line Seed Sampler?

Select the in-line sampler when seed is conveyed or processed continuously and many increments are needed to represent the whole batch, or when manual sampling is impractical. For bagged or static lots, use a trier or probe. In an RFQ, specify flow rate, increment size, number of containers and control requirements.

How does it compare with other Seed Sampling Equipment variants?

Match the sampler to the container or stream and to the rule that applies. Bagged seed needs a trier of the right length and slot pattern so that a core from top to bottom is withdrawn; multi-slot triers are faster for large numbers of bags. Bulk lots, bins and trucks need a probe or pneumatic sampler that reaches several depths, and large silos or continuous flows are best served by an automatic in-line sampler that takes timed increments. After sampling, a divider is essential to reduce the composite; choose a Boerner type for free-flowing seed and a riffle type for smaller or more difficult material. Confirm that the sampler and divider meet the sampling scheme required by the certification or testing rules, and that they can be cleaned between lots to avoid variety and seed treatment contamination.