The modular horizontal tube furnace range GHA (single zone) and GHC (3-zone) uses free radiating wire elements embedded within the insulation of the furnace body. The benefit of this design is its flexibility; with the use of tube adapters the same furnace can be used with a variety of tube diameters.

• Maximum operating temperature 1200 °C
• Carbolite Gero 301 controller, with single ramp to set-point & process timer
• Accepts work tubes with outer diameter up to 170 mm
• Long life, rapid heating, resistance wire elements mounted in rigid, vacuum formed insulation modules
• Horizontal configuration mounted on control module
• Furnace mounted directly on top of controller base unit

The extended uniform zone in the mid-section of the work tube in the GHC 3-zone furnace is achieved with the use of end zone controllers which track the centre zone temperature and compensate for the loss of heat from the tube ends.

Heated lengths: Single zone 300, 450, 600, 750, 900, 1050 or 1200 mm (GHA); 3-zone 450, 600, 750, 900, 1050 or 1200 mm (GHC)
End zones 150 mm long on each end (GHC)