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With a maximum operating temperature of 1200°C, these furnaces can accept work tubes with a diameter from 19.5 — 150nmi. The range includes seven heated lengths from 300mm to 1200mni in both horizontal and vertical versions, with either single-zone or three-zone control. The multi-zone models provide particularly good temperature uniformity and can be used to create a temperature gradient. Heating is provided by semi-embedded, free-radiating wire elements in vacuum formed insulation modules, which provide good support and increase the working life of the element. An integral work tube is not fitted and a separate work tube must be used, but removable tube adaptors at each end of the furnace allow rapid changes for different size work tubes.
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The horizontal versions are mounted on an attractive base unit, whilst the versatile models are supplied with a stand kit and a separate control box with a length of conduit flex which permits horizontal, vertical and wall mounted use.
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GHA = 1 zone horizontal
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