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	FURNACES		TUBE FURNACES

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1200°C LARGE BORE TUBE FURNACES

GHA 12/75/600/301 General Features
Maximum operating temperature of 1200°C.
Designed to accept process tubes up to 6.5" OD.
Six different heated lengths of 18", 24", 30", 36", 42" & 48" provide for multiple working and uniformity requirements.
Insulating end vestibules improve chamber uniformity and incorporate interchangeable tube adapters.
These tube adapters allow convenient conversion to different diameter process tubes.
Long-life free radiating heating element design provides excellent radial and linear chamber uniformity.
High efficiency low mass vacuum formed ceramic fiber insulation enhances heat-up rates.
Carbolite large bore tube furnaces are available in single and three zone designs.
Three zone tube furnaces provide a longer uniform temperature zone through elevation of end zone temperatures to compensate for normal end losses.
Safety outer mesh guard provides low temperature external surface.
Furnaces are normally mounted horizontally on an attractive support base.
Furnace controls are built into the support base, providing convenient observation and access to all power and temperature controls.
Each tube furnace is available for optional vertical operation.
Vertical design is interconnected to a separate control cabinet with a 6 foot cable.
Each three zone furnace incorporates three separate temperature controls to allow variation of set point temperature in each zone.
GHC model end zone controllers may be slaved to the center

zone or fully independent.
Choice of 301 or programmable controls.
See tube furnace options

Uniformity Profile

1200°C Large Bore Tube Furnace

Model

Max. Temp.

(°C)
Max O.D. Tube^■ in" Heated length in" No. of Zones TC Type Max Power (KW) Volts Exterior Dimensions H x L x D in" Ship Weight lbs

GHA 12/450 1200 6.5 17.75 1 N 3.12 208/240 26.5" x 26.75" x 18.5" 130

GHA 12/600 1200 6.5 23.5 1 N 3.9 208/240 26.5" x 32.5" x 18.5" 146

GHA 12/750 1200 6.5 29.5 1 N 4.68 208/240 26.5" x 38.5" x 18.5" 179

GHA 12/900 1200 6.5 35.5 1 N 5.46 208/240 26.5" x 44.5" x 18.5" 203

GHA 12/1050 1200 6.5 41.25 1 N 6.24 208/240 26.5" x 50.25" x 18.5" 238

GHA 12/1200 1200 6.5 47.25 1 N 7.02 208/240 26.5" x 56.25" x 18.5" 265

GHC 12/450 1200 6.5 17.75 3 N 3.12 208/240 26.5" x 26.75" x 18.5" 130

GHC12/600 1200 6.5 23.5 3 N 3.9 208/240 26.5" x 32.5" x 18.5" 146

GHC 12/750 1200 6.5 29.5 3 N 4.68 208/240 26.5" x 38.5" x 18.5" 179

GHC 12/900 1200 6.5 35.5 3 N 5.46 208/240 26.5" x 44.5" x 18.5" 203

GHC 12/1050 1200 6.5 41.25 3 N 6.24 208/240 26.5" x 50.25" x 18.5" 238

GHC 12/1200 1200 6.5 47.25 3 N 7.02 208/240 26.5" x 56.25" x 18.5" 265

^■Specify tube OD at time of order.

Specify voltage at time of order.

Furnaces operate on single phase voltage.

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