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Carbolite Furnace Information
General Purpose Box Furnaces
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Maximum operating temperatures of 1100°C, 1200°C and 1300°C.
Three chamber sizes available.
Two high power side heating elements provide enhanced heat-up and chamber uniformity.
Graded element winding further optimizes chamber uniformity.
Dense refractory around chamber entrance resists abrasion and wear.
Chamber vent provides for process exhaust.
Vertical lift door design keeps hot door insulation away from operator.
Hard ceramic hearth provides excellent resistance to wear and spillage.
Low thermal mass insulation improves both energy efficiency and the furnace thermal performance.
Low outer case temperature provided through double shell construction.
Positive break door safety switch isolates power to the heating elements when door is opened.
Choice of Model 301 control or programmers.
Small case size conserves bench space.
Serviceability is aided by furnace mechanical and electrical design.
Choice of multiple accessories and options.
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1100°C General Purpose Box Furnace
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1100 °C
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5.25 x 5.50 x 10.0 Inch
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23.00 x 14.75 x 19.00 Inch
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K
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2.4 kW
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1100°C General Purpose Box Furnace
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1100 °C
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8.00 x 8.00 x 13.00 Inch
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25.75 x 17.00 x 24.00 Inch
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K
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3.1 kW
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1100°C General Purpose Box Furnace
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1100 °C
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9.25 x 9.50 x 15.75 Inch
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27.75 x 20.00 x 26.50 Inch
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K
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7.0 kW
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1200°C General Purpose Box Furnace
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1200 °C
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5.25 x 5.50 x 10.0 Inch
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23.00 x 14.75 x 19.00 Inch
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R
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2.4 kW
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1200°C General Purpose Box Furnace
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1200 °C
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8.00 x 8.00 x 13.00 Inch
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25.75 x 17.00 x 24.00 Inch
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R
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3.1 kW
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1200°C General Purpose Box Furnace
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1200 °C
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9.25 x 9.50 x 15.75 Inch
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27.75 x 20.00 x 26.50 Inch
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R
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7.0 kW
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1300°C General Purpose Box Furnace
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1300 °C
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5.25 x 5.50 x 10.0 Inch
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23.00 x 14.75 x 19.00 Inch
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R
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2.4 kW
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1300°C General Purpose Box Furnace
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1300 °C
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8.00 x 8.00 x 13.00 Inch
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25.75 x 17.00 x 24.00 Inch
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R
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3.1 kW
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1300°C General Purpose Box Furnace
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1300 °C
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9.25 x 9.50 x 15.75 Inch
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27.75 x 20.00 x 26.50 Inch
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R
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7.0 kW
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Rapid Heating Box Furnaces
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Maximum operating temperatures of 1100°C or 1200°C.
Three chamber sizes available.
Extremely fast heat-up rates provided by two high power side heating elements.
Graded element winding and free radiating coil design provide excellent chamber uniformity.
Vertical lift door design keeps hot door insulation away from operator.
Holding Power of 20-25% for RWF furnaces reduces energy costs.
Positive break door safety switch isolates power to the heating elements when door is opened.
High efficiency low mass vacuum formed ceramic fiber insulation greatly enhances furnace performance.
Hard ceramic hearth provides excellent resistance to wear and spillage.
Chamber vent provides for process exhaust.
Low outer case temperature provided through double shell construction.
Choice of Model 301 control or programmers.
Small case size conserves bench space.
Serviceability is aided by furnace mechanical and electrical design.
Choice of multiple accessories and options.
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1100°C Rapid Heating Box Furnace
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1100 °C
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5.25 x 6.25 x 10.00 Inch
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23.50 x 14.75 x 19.00 Inch
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K
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2.75 kW
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1100°C Rapid Heating Box Furnace
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1100 °C
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7.75 x 8.25 x 13.00 Inch
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25.75 x 17.25 x 24.00 Inch
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K
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5.0 kW
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1100°C Rapid Heating Box Furnace
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1100 °C
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8.75 x 10.25 x 15.75 Inch
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27.75 x 20.00 x 26.50 Inch
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K
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9.1 kW
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1200°C Rapid Heating Box Furnace
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1200 °C
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5.25 x 6.25 x 10.00 Inch
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23.50 x 14.75 x 19.00 Inch
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R
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2.75 kW
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1200°C Rapid Heating Box Furnace
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1200 °C
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7.75 x 8.25 x 13.00 Inch
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23.75 x 17.25 x 24.00 Inch
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R
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5.0 kW
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1200°C Rapid Heating Box Furnace
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1200 °C
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8.75 x 10.25 x 15.75 Inch
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27.75 x 20.00 x 26.50 Inch
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R
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9.1 kW
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Economy Box Furnace
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Excellent chamber uniformity.
Drop-down door serves as a shelf when loading and unloading samples.
Positive break door safety switch isolates power to the heating elements when door is opened.
Fast heat-up enhanced by low mass ceramic fiber chamber.
Long-life heating elements.
Integral Model 301 PID temperature controller.
Ideal for light duty applications requiring good thermal response.
Low outer case temperature provided through double shell construction.
Dense ceramic hearth provides excellent resistance to wear and spillage.
Chamber vent provides for process exhaust.
Small case size conserves bench space.
Designed to operate on either 208 or 240V
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ELF 11/6
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1100°C Economy Box Furnace
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1100 °C
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6.50 x 7.00 x 8.25 Inch
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22.75 x 16.25 x 16.25 Inch
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K
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2.0 kW
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ELF 11/14
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1100°C Economy Box Furnace
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1100 °C
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8.25 x 8.75 x 12.25 Inch
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24.75 x 17.75 x 20.50 Inch
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K
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2.6 kW
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Heavy Duty Box Furnaces
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Maximum operating temperatures of 1200°C and 1300°C.
Two large volume chamber sizes available.
Rugged construction for heavy-duty heat treating requirements.
High power free radiating side heating elements provide fast heat-up and enhanced chamber uniformity.
Vertical lift door design keeps hot door insulation away from operator.
Low thermal mass insulation improves energy efficiency and fast heat-up rates.
Hard ceramic hearth provides excellent resistance to wear and spillage.
Long-life heavy gauge coil heating elements.
Chamber vent provides for process exhaust.
Dense refractory around chamber entrance resists abrasion and wear.
Positive break door safety switch isolates power to the heating elements when door is opened.
Low outer case temperature provided through double shell construction.
Small case size conserves bench space.
Serviceability is considered throughout furnace mechanical and electrical design.
Choice of Model 301 control or programmers.
Choice of multiple accessories and options.
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1200°C Heavy Duty Box Furnace
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1200 °C
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10.00 x 12.50 x 17.75 Inch
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32.00 x 27.00 x 30.75 Inch
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R
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9.0 kW
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1200°C Heavy Duty Box Furnace
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1200 °C
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11.00 x 15.50 x 23.50 Inch
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34.75 x 30.75 x 37.00 Inch
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R
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14.0 kW
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1300°C Heavy Duty Box Furnace
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1300 °C
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10.00 x 12.50 x 17.75 Inch
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32.00 x 27.00 x 30.75 Inch
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R
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9.0 kW
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1300°C Heavy Duty Box Furnace
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1300 °C
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11.00 x 15.50 x 23.50 Inch
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34.75 x 30.75 x 37.00 Inch
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R
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14.0 kW
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High Temperature Box Furnaces 1400°C, 1500°C and 1600°C.
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Maximum operating temperatures of 1400°C, 1500°C and 1600°C.
Four chamber sizes available.
Heating elements located on both sides of chamber ensure good thermal uniformity.
Vertical lift door design keeps hot door insulation away from operator.
Long-life silicon carbide heating elements are resistant to mechanical damage and chemical attack.
Hard ceramic hearth provides excellent resistance to wear and spillage.
Low thermal mass insulation improves energy efficiency and heat-up rates.
Unique feature allows increase of power to the heating elements to always achieve original heat-up performance as elements resistance increases with age.
Positive break door safety switch isolates power to the heating elements when door is opened.
Low outer case temperature provided through double shell construction.
Chamber vent provides for process exhaust.
Small case size conserves bench space of bench top units.
Choice of Model 301 control or programmers.
Serviceability is aided by furnace mechanical and electrical design.
Choice of multiple accessories and options.
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1400°C High Temperature Box Furnace
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1400 °C
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4.75 x 4.75 x 8.00 Inch
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25.75 x 17.00 x 24.00 Inch
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R
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4.5 kW
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1400°C High Temperature Box Furnace
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1400 °C
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6.75 x 6.75 x 10.75 Inch
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27.75 x 20.00 x 26.50 Inch
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R
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8.0 kW
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1400°C High Temperature Box Furnace
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1400 °C
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8.75 x 8.75 x 12.00 Inch
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32.00 x 27.00 x 30.75 Inch
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R
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10.0 kW
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1400°C High Temperature Box Furnace
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1400 °C
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10.00 x 12.0 x 18.50 Inch
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34.75 x 30.75 x 37.00 Inch
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R
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16.0 kW
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1500°C High Temperature Box Furnace
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1500 °C
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4.75 x 4.75 x 8.00 Inch
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25.75 x 17.00 x 24.00 Inch
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R
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4.5 kW
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1500°C High Temperature Box Furnace
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1500 °C
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6.75 x 6.75 x 10.75 Inch
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27.75 x 20.00 x 26.50 Inch
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R
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8.0 kW
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1500°C High Temperature Box Furnace
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1500 °C
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8.75 x 8.75 x 12.00 Inch
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32.00 x 27.00 x 30.75 Inch
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R
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10.0 kW
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1500°C High Temperature Box Furnace
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1500 °C
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10.00 x 12.0 x 18.50 Inch
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34.75 x 30.75 x 37.00 Inch
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R
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16.0 kW
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1600°C High Temperature Box Furnace
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1600 °C
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4.75 x 4.75 x 8.00 Inch
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25.75 x 17.00 x 24.00 Inch
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R
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4.5 kW
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1600°C High Temperature Box Furnace
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1600 °C
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6.75 x 6.75 x 10.75 Inch
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27.75 x 20.00 x 26.50 Inch
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R
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8.0 kW
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1600°C High Temperature Box Furnace
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1600 °C
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8.75 x 8.75 x 12.00 Inch
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32.00 x 27.00 x 30.75 Inch
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R
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10.0 kW
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1600°C High Temperature Box Furnace
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1600 °C
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10.00 x 12.0 x 18.50 Inch
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60.25 x 35.50 x 40.25 Inch
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R
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16.0 kW
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High Temperature Box Furnaces 1700°C and 1800°C.
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Three chamber sizes available.
Heating elements located on both sides of chamber ensure good thermal uniformity.
All Carbolite standard 1700°C furnaces are fitted with 3216P1 programmer and a separate independent over-temperature protection controller.
Long-life molybdenum disilicide heating elements are suitable for intermittent or continuous operation.
Vertical lift door design keeps hot door insulation away from operator.
Advanced high temperature, high strength hot face insulation is combined with graded low thermal mass insulation to improve energy efficiency and heat-up rates.
Large diameter heating elements greatly reduce potential for mechanical breakage.
RS232 digital communications provided as standard on Models HTF 17/5 and HTF 17/10.
Positive break door safety switch isolates power to the heating elements when door is opened.
Low temperatures of outer case and critical components are provided through fan cooling.
Molybdenum disilicide element resistance does not change with usage, providing no restriction on placement of a new element in circuit with older elements.
Chamber vent provides for process exhaust.
Serviceability is aided by furnace mechanical and electrical design.
Choice of optional programmable controls.
Choice of multiple accessories and options. (See pages 46-48)
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1700°C High Temperature Box Furnace
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6.25 x 6.00 x 8.75 Inch
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22.25 x 32.50 x 25.50 Inch
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1700 °C
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B
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4.19 kW
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1700°C High Temperature Box Furnace
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9.25 x 8.00 x 8.75 Inch
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22.25 x 32.50 x 25.50 Inch
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1700 °C
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B
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5.92 kW
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1700°C High Temperature Box Furnace
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12.00 x 12.00 x 12.00 Inch
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71.00 x 43.25 x 26.75 Inch
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1700 °C
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B
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9.60 kW
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1800°C High Temperature Box Furnace
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5.50 x 5.50 x 7.50 Inch
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22.25 x 32.50 x 25.50 Inch
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1800 °C
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Pt 20% Rh/Pt 40% Rh
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4.5 kW
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1800°C High Temperature Box Furnace
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8.25 x 7.50 x 7.50 Inch
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22.25 x 32.50 x 25.50 Inch
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1800 °C
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Pt 20% Rh/Pt 40% Rh
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6.4 kW
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1800°C High Temperature Box Furnace
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8.75 x 8.75 x 12.00 Inch
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62.25 x 27.25 x 31.50 Inch
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1800 °C
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Pt 20% Rh/Pt 40% Rh
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9.0 kW
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1800°C High Temperature Box Furnace
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12.00 x 12.00 x 12.00 Inch
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63.50 x 30.75 x 37.25 Inch
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1800 °C
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Pt 20% Rh/Pt 40% Rh
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18.0 kW
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Ashing and Burn-Off Furnaces
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Five different ashing and burn-off furnace models to choose from.
Select the model and design best suited to your need, based on the process and material to be heated.
Air inlets located in front of chamber and outlet chimney in rear facilitate natural convective air flow.
Maximum operating temperature of 1100°C.
Chamber air flow provides oxygen to enhance ashing or burning process, and removal of exhaust.
Isolation of heating element from working chamber in AAF and GSM furnaces eliminates potential of element contamination by process.
Reduction of carbon build-up is assured by air flow through the furnace chamber.
BWF high power graded element winding provides enhanced heat-up and improved chamber uniformity.
Large diameter extended chimney provides for efficient process exhaust.
Wire wound muffles heat the chamber from 4 sides, providing good temperature uniformity.
Models AAF 11/3, AAF 11/7 and GSM 11/8 all incorporate traditional wire-wound muffle design.
GSM fused quartz muffle offers superior containment of aggressive atmospheres.
Unique GSM quartz muffle provides dust free working chamber.
Model AAF 11/18 isolates heating elements with protective silicon carbide tiles.
Vertical lift door design keeps hot door insulation away from the operator.
Positive break door safety switch isolates power to the heating elements when door is opened.
Low outer case temperature provided through double shell construction.
Choice of Model 301 control or programmers.
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1100°C Ashing and Burn-Off Furnace
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1100 °C
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3.25 x 6.00 x 10.00 Inch
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22.75 x 14.50 x 19.00 Inch
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K
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1.75 kW
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1100°C Ashing and Burn-Off Furnace
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1100 °C
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3.50 x 6.75 x 18.00 Inch
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25.50 x 17.00 x 29.00 Inch
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K
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3.9 kW
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1100°C Ashing and Burn-Off Furnace
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1100 °C
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9.25 x 7.75 x 15.75 Inch
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27.75 x 20.00 x 26.50 Inch
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K
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7.25 kW
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1100°C Ashing and Burn-Off Furnace
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1100 °C
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4.75 x 7.00 x 13.50 Inch
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27.75 x 20.00 x 28.50 Inch
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K
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3.00 kW
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1100°C Ashing and Burn-Off Furnace
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1100 °C
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8.00 x 8.00 x 13.00 Inch
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25.75 x 17.25 x 24.00 Inch
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K
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3.1 kW
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Bottom Loading Furnaces
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Maximum operating temperatures of 1700°C and 1800°C.
Three chamber sizes available.
Convenient loading of chamber through electrically actuated lift mechanism.
Superior sample uniformity is obtained by positioning elements on all sides of hexagon shaped chamber.
All standard 1700°C and 1800°C BLF furnaces are fitted with 3216P1 programmer and a separate independent over-temperature protection control.
Elevator hearth design provides safe and smooth loading and unloading of delicate loads.
Fast heating and cooling of the sample is achieved by raising or lowering the sample from the furnace chamber.
Long-life molybdenum disilicide heating elements are suitable for intermittent or continuous operation.
Advanced high temperature, high strength hot face insulation is combined with graded low thermal mass insulation to improve thermal performance and energy efficiency.
Positive break safety switch isolates power to the heating elements when hearth is lowered.
Chamber vent provides for process exhaust.
Large diameter heating elements greatly reduce potential for mechanical breakage.
Low temperatures of outer case and critical components are provided through fan cooling.
Molybdenum disilicide element resistance does not change with usage, providing no restriction on placement of a new element in circuit with older elements.
Optional gas containment cover allows processing under high purity inert atmospheres.
Optional protective alumina liner is available for aggressive processes that may harm elements or insulation materials.
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1700°C Bottom Loading Furnace
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1700 °C
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6.00 x 7.50 Inch
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38.50 x 21.00 x 29.50 Inch
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B
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5.0 kW
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1700°C Bottom Loading Furnace
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1700 °C
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8.00 x 10.00 Inch
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76.75 x 31.50 x 53.50 Inch
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B
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9.0 kW
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1700°C Bottom Loading Furnace
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1700 °C
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13.00 x 12.00 Inch
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73.00 x 33.50 x 49.25 Inch
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B
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12.0 kW
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1800°C Bottom Loading Furnace
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1800 °C
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6.00 x 7.50 Inch
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38.50 x 21.00 x 29.50 Inch
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Pt 20% Rh/Pt 40% Rh
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6.00 kW
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1800°C Bottom Loading Furnace
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1800 °C
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8.00 x 10.00 Inch
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76.75 x 31.50 x 53.50 Inch
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Pt 20% Rh/Pt 40% Rh
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10.0 kW
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Top Loading Crucible Furnaces
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Four chamber sizes available.
Maximum operating temperature of 1200°C.
Excellent chamber uniformity provided by elements positioned on four sides of chamber.
Door handle and hinge mechanism conveniently raises door plug upward and to the side for full access to the chamber.
Long-life coiled wire heating elements embedded in protective cast refractory slabs.
Durable insulating door plug includes built-in exhaust vent.
Chamber volumes from .2 ft.3 to 3.5 ft.3
Positive break door safety switch isolates power to the heating elements when door is raised.
Temperature controls are built into furnace cabinetry.
Low thermal mass insulation improves energy efficiency.
Hard refractory hearth provides excellent resistance to wear and spillage.
Low outer case temperature provided through double shell construction.
Choice of Model 301 control or programmers.
Serviceability is aided by furnace mechanical and electrical design.
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1200°C Top Loading Crucible Furnace
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1200 °C
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6.00 x 5.00 x 10.25 Inch
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21.00 x 16.00 x 26.00 Inch
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R
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2.5 kW
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1200°C Top Loading Crucible Furnace
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1200 °C
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7.00 x 6.00 x 14.50 Inch
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22.00 x 17.00 x 30.00 Inch
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R
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3.00 kW
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1200°C Top Loading Crucible Furnace
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1200 °C
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10.00 x 8.00 x 17.75 Inch
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23.00 x 19.75 x 33.50 Inch
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R
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6.00 kW
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1200°C Top Loading Crucible Furnace
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1200 °C
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16.00 x 16.00 x 23.50 Inch
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36.50 x 37.50 x 43.25 Inch
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R
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15.0 kW
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Air Recirculating Furnaces
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Maximum operating temperature of 750°C.
Two chamber sizes available.
Long-life mineral insulated sheathed heating elements are provided on both sides of the chamber.
Powerful centrifugal fan forces air over the heating elements for efficient heating of chamber.
Fan and air guide system provides continuous movement of air around the load for maximum temperature uniformity.
Heavy duty stainless steel chamber liner.
Chamber is fitted with shelf runners for convenient placement of optional shelves.
Choice of Model 301 control or programmers.
Side hinged door minimizes heat loss.
Low thermal mass insulation improves energy efficiency.
Dense refractory around chamber entrance resists abrasion and wear.
Chamber vent provides for process exhaust.
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750°C Air Recirculating Furnace
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750 °C
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8.75 x 8.00 x 19.50 Inch
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23.25 x 17.75 x 34.25 Inch
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K
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3.00 kW
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750°C Air Recirculating Furnace
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750 °C
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11.50 x 10.50 x 22.50 Inch
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29.75 x 23.75 x 43.25 Inch
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K
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6.00 kW
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Rotary Reactor Furnaces
Laboratory scale rotary batch furnace provides agitation of powdered solids under controlled atmosphere and temperature environment.
Maximum operating temperature of 1100°C.
Designed to simulate larger industrial rotary calcining processes in a laboratory size furnace.
Continuous agitation of material overcomes the problems of long reaction times experienced by static processing in a box or tube furnace.
The material is retained and heated in an enlarged vessel section of a quartz tube.
Furnace is available in two sizes measured by the quartz vessel diameter and length.
A typical charge for the furnace would be moderately fine to course granular solids which do not contain significant quantities of dust.
The smooth internal vessel profile allows convenient loading, emptying and cleaning with minimum powder loss.
Hinged heated chamber design provides easy access for removal and insertion of the quartz vessel.
A long-life resistance wire heating element is combined with low thermal mass insulation to provide an efficient uniform heated chamber.
Quartz vessel rotation is variable through adjustment of panel mounted speed control.
Quartz vessel is fluted on the internal surface to insure good mixing and uniform exposure of particles to the atmosphere.
Furnace is provided with a nitrogen flow meter, with alternate gas and additional flow meters available as options.
Outlet end of quartz vessel extends into stainless steel exhaust box that is fitted with gas outlet port.
Positive break furnace safety switch isolates power to the heating elements when the furnace is opened.
Controls are built into furnace cabinetry, providing convenient observation and access to all power and temperature controls.
Choice of Model 301 control or programmers. Carbolite can provide continuous or batch rotary tube furnaces specifically designed to a customer's process requirement. The general design concept of such rotary tube furnaces is similar, but furnace and system specifications will vary based on process temperature, throughput, atmosphere requirements, characteristics of material, cooling requirements, etc
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1100°C Rotary Reactor Furnace
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1100 °C
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3.0 Inch
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4.0 Inch
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.06 to .08 liter
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19.00 x 45.00 x 21.75 Inch
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K
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1.50 kW
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1100°C Rotary Reactor Furnace
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1100 °C
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6.0 Inch
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8.0 Inch
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.7 to .9 liter
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21.25 x 51.25 x 27.25 Inch
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K
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3.00 kW
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Cupellation Furnaces for the Assay of Gold Alloys
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Carbolite CF Model furnaces are designed specifically for the assay of gold alloys by cupellation.
Every model provides excellent temperature uniformity and minimal heat loss.
These furnaces are also known for their low maintenance and maximum fume control.
The silicon carbide lined chamber withstands attack by corrosive lead fumes.
Long-life silicon carbide elements are mounted above and below the work chamber, providing uniform heating of the cupels.
A furnace chamber constructed of low thermal mass insulation, and hard wearing refractory provides maximum thermal efficiencies.
Incoming air flow is preheated before entering the furnace chamber.
An adjustable valve at rear of furnace allows variation of incoming air flow.
Process fumes exit the chamber via an insulated exhaust duct and chimney.
A removable container located below the chimney collects any condensed lead.
Vertical lift door design keeps hot door insulation facing away from operator.
An observation hole in the furnace door allows visual access to the chamber.
Positive break door safety switch isolates power to the heating elements when door is opened.
Low outer case temperature provided through double shell construction.
Furnace should be positioned beneath an efficient air extraction system.
Choice of Model 301 control or programmers.
A 7 day, 24 hour timer is standard.
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Cupellation Furnace for the Assay of Gold Alloys
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1200 °C
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5.00 x 8.75 x 13.75 Inch
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41.50 x 37.50 x 37.50 Inch
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R
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9.0 kW
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Cupellation Furnace for the Assay of Gold Alloys
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1200 °C
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8.00 x 10.00 x 18.00 Inch
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83.00 x 41.50 x 42.25 Inch
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R
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14.5 kW
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Cupellation Furnace for the Assay of Gold Alloys
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1200 °C
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9.00 x 13.75 x 21.25 Inch
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82.75 x 45.25 x 47.25 Inch
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R
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20.0 kW
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Cupellation Furnace for the Assay of Gold Alloys
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1200 °C
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9.75 x 15.75 x 25.50 Inch
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82.75 x 43.50 x 47.25 Inch
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R
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31.0 kW
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