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Sentry Equipment

How a Sentry Cross-Cut Solid and Powder Sampler Works

What this video shows

Sentry Equipment shows the Model SA sampler, which cuts a sample across a falling stream of free flowing material in a vertical spout or chute.

What the footage shows

The manufacturer explains how a cross-cut sampler takes a sample from a falling stream in a vertical spout.

Process challenge

A sample taken from one side of a falling stream is not representative of the whole stream.

Demonstrated solution

A pelican type diverter that swings on an arc through the full falling stream and collects the cut.

Technical overview

Key features

  • •Cross-cut sampling from vertical spouts and chutes.
  • •A solenoid controlled pneumatic rotary actuator swings the diverter through the stream.

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About this video

The textbook rule of sampling says a correct sample crosses the whole stream in one pass. A cross-cut sampler does exactly that: a diverter swings through the falling material on an arc, so every part of the stream contributes to the sample instead of only the part nearest the wall.

This video shows the mechanism and the actuator that drives it.

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