The heart of the Welker
Gas Sampling System is the GSS-4 Vanishing Chamber
Pump. With its unique collection head design, the
GSS-4 is the best sampler pump available.
With each actuation of the sampler, the collection
head is compressed. This causes the chamber in the
collection head to vanish, thereby totally voiding
itself of product.
Complete voiding of the collection chamber is an
important part of collecting a representative sample.
It insures that each new "bite" will be
representative of what is flowing through the line
at that instant.
Welker samplers perform accurately.
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