Two Zones (1100°C) Split Vertical Tube Furnace w/ 4" Quartz Tube & Vacuum Flanges - OTF-1200X-VT-II-100

• Double-layer steel structure with air cooling to keep case temperature <65°C
• High purity fibrous alumina insulation with a Special coating to ensure max. energy saving
• Foam ceramic blocks with alumina coating are included, which is hanged on top and bottom of flange to protect O-ring from damaged by heat radiation ( click picture below for details)

Power

Voltage

Max. Temperature

Continuous Temperature

Max. Heating Rate

Temperature Accuracy

Tube Size and Materials

• One 1000mm length quartz tube is included
• OD: 100 mm, ID: 95 mm
• Foam ceramic blocks with alumina coating are included, which is hanged on top of flange to protect O-ring damaged by heat radiation
• Upgrade note: Processing tube can be replaced by mullite tube from 60 mm OD to 100 mm OD at extra cost, then furnace can be used up to 1250°C )

Heating Zone Length

• Two heating zones: 200mm + 200 mm , total 400mm
• Constant temperature zone: 250 mm (+/-2°C) if two heating zones are at the same temperature
• Temperature Uniformity: +/- 5°C @ 500°C in a 300mm zone in length

Temperature Controller

• MET certified 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
• Built-in PID Auto-Tune function with overheating & broken thermocouple broken protection.
• Over-temperature protection and alarm allow for operation without attendant(s).
• RS485 Communication Port.
• The controller may be upgraded to Eurotherm 3000 with +/- 0.1 °C accuracy.

• Two stainless steel flanges with vacuum gauge and valves included
  • Gas outlet ( vacuum port ) on top with 1/4" barb connector. 
  • Gas inlet on the bottom with 1/4" barb connector
• A hook ring is welded inside the top flange for hanging thermal block or crucible by wireYou may choose any connectors (KF25D adapter, 1/4'' Swagelok Tube Fitting) as shown in the picture left at extra cost.

Vacuum Level

• 10E-2 Torr by a mechanical vacuum pump

• 10E-5 Torr by molecular pump

•  Leak rate < 5 mTorr / min.

Heating Element

1300°C Fe-Cr-Al Alloy doped by Mo

Laptop, software l(Optional)

     

Application Note 

( We may help you to build customized flange to meet your application at extra cost )

• Customers may calibrate temperature before use to obtain accurate temperature inside tube furnace, please click here to learn how.
• Please click the picture below to learn how to quench sample in gas flow and vacuum
  
  • Approach#1: Traditional wire cut and free-falling ( Fig. 1 & 2 )
  • Approach#2: Electromagnetic release and free-falling. (Fig 3 & 4 )

Fig. 1  Fig. 2  Fig. 3 Fig. 4 

• The furnace can be modified into an HPCVD ( hybrid physical-chemical vapor deposition ) furnace via DIY a sample susceptor ( click picture below-left to see how )
• The furnace can be used for brazing of two flat < 1" Diameter sample via top dead weight under vacuum at <1000° ( click the picture below -right to see how )
• • 
                 

 Warning

• The tube furnaces with quartz tubes are designed for use under vacuum and low pressure <0.2 bars / 3 psi / 0.02 MPa. Vacuum pressures may only be safely used up to 1000°C. The flow rate for gasses should be limited to < 200 SCCM (or 200ml/min) for reducing thermal shocks to the tube.
• Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.