OTF-1100X-III series is a three-zone split tube furnace with optional 11" or 15" OD quartz tubes and hermetic flanges. The furnace features a pair of motorized actuator to open and close the furnace lid in an ease. Three programmable PID temperature controllers allows a smooth heating and cooling ramps with a fluctuation less than 1ºC. It has been widely used for materials synthesis, wafer annealing, diffusion, and heat treatment for bulk sample under vacuum or gas atmosphere.
Features
- Split tube furnace design
- Working temperature ≤ 1100°C
- Choice of tube size: 11" or 15"
- Three heating zones, 300 + 300 + 300 mm
- Uniform heating length 600 mm @ +/- 5°C @800 °C
SPECIFICATIONS
| Power |
- 480 VAC, three phase, 50/60 Hz, 40 A
- 30 kVA
- 10-foot power cord is included.
- More voltage rating is also available upon request.
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Furnace structure
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- Double-layer steel casing with air cooling to keep surface temperature of the case < 70°C.
- Motorized actuator to open and close the furnace lid in an ease
- Refractory fibrous alumina thermal insulation
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Heating zone
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- Total heating zone length 900mm
- Three zones: 300 mm + 300 mm + 300mm ( 900 mm in total)
- Constant temperature zone length: 600 mm (if three zones are in the same temperature within +/- 5°C)
- Cross-section Temperature tolerance +/- 5°C
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| Heating Elements |
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| Working Temperature |
- ≤ 1200 °C, up to 30 min
- ≤ 1100 °C, continuously at ambient pressure
- ≤ 900 °C, under vacuum
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| Heating Rate |
- ≤ 10 °C/min
- ≤ 5 °C/min recommended
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| Temperature Controllers |
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| Eurotherm Controllers (optional) |
- Three Eurotherm 3000 series programmable PID temperature controllers
- 24 temperature segements
- Control accuracy: +/- 0.1°C
- RS-485 communication
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| Thermocouple |
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| Quartz tube |
- 11“ or 15" ID quartz tube with 73" Length is selectable from the product option
- 381 OD x 371 ID x 1860L mm (15"OD x 14.6" x 73"L)
- 279 OD x 269 ID x 1860L mm (11"OD x 10.6"ID x 73"L)
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| Thermal Blocks |
- Two fibrous ceramic thermal blocks
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Optional multi-quartz disk thermal blocks are available for higher vacuum at an extra cost
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| Flanges |
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A pair of stainless steel elastomer sealed flanges (hinged)
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4 pieces of silicon O-rings
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Left Side Flange: stainless steel needle valves, 1/4" tube gas inlet, and a pressure gauge
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Right Side Flange: KF40 vacuum port, one 1/4" quick-connect port for in-situ temperature measurement
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| Pressure |
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| Vacuum level |
- Vacuum level depends on the vacuum pump and thermal block materials
- <5e-2 torr with a backing pump and alumina thermal blocks after bakeout.
- <1e-4 torr with a 700 L/s turbo pump and quartz thermal blocks
- <1e-3 torr with a 700 L/s turbo pump and alumina thermal blocks.
- All the pressure are measured at ambient temperature.
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| Installation |
- On-site installation is required
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Options
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- Quartz wafer boat for 8" or 12" wafers
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