Typical Applications

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THE USE OF SHAW MOISTURE METERS IN THAT APPLICATION


GLOVE BOXES
SEE ALSO - AIR. Glove Boxes (or Dry Boxes) are enclosures with - usually - two access holes fitted with Neoprene gloves so that operations can be carried out in the protected environment inside the box. These operations vary widely and include the handling of dangerous or hygroscopic chemicals, assembly of transistors and other semiconductor devices, and numerous research applications. In many of these applications it is essential that the atmosphere inside the glove box is dry. The atmosphere is often air - but it may be nitrogen or any one of several other gases depending upon the application. The best way of installing the moisture monitor is to fit the sensor in the top of the box (where the moisture level will be at its highest - as water vapour rises), with a loose length of cable inside so that the sensor can be moved around to look for wet areas - caused by uneven flow of the purge air or gas. The alternative is to fit the sensor in the exhaust line, when it will give an average reading of the box moisture. Usual moisture: generally drier than -60°C.

WELDING
High quality welding, especially of stainless steel, is carried out in a shielding atmosphere of Argon. The Argon must be dry to avoid oxidation of the weld. Usual moisture: <-60°C.

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