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Six-Zone Split Tube Furnace (Optional 2-4" Quartz Tube x 2 Meter L, 1200C Max.) - OTF-1200X-VI-2M-UL

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OTF-1200X-VI-2M-UL is a CE certified & UL Ready Six-zone & ultra-long split tube furnace with separated temperature control units and max working temperature of 1200oC . This six-zone furnace can create step thermal gradient or 60" ( 1500mm ) long  constant heating zone by setting all the temperature controllers at same temperature. The furnace can accept processing tube with various O.D (1" to 4") at extra cost. Six 30-segment temperature controllers are built in a separate control box which allow PC software control of the furnace from a certain distance. It is an excellent furnace to handle various gases.
Furnace Structure
  • Double layer steel case
  • High purity fibrous alumina insulation provides good energy saving.
  • Heating Element : 1300 °C grade Fe-Cr-Al Alloy doped by Mo
  • 80"length x 5.5"dia heating chamber with 6 built in thermal couples
Power & Voltage  
  • AC 208-240V Single Phase, 50/60 Hz 
  • 13 KW Max. in total
    • Each heating zone requires 2KW power supply
    • Power cord is included without plug
Max. Temperature 1200 °C (<1 hour)
Continuous Temperature 1100 °C
Max. Heating Rate <= 20 °C /min
Thermal Block Placement
Heating Zone
  • Six independent heating zones: Each heating zone length  300 mm
  • Total zone length: 2000 mm, or 80" in total ( including seperating )
  • Max. Constant temperature zone 60" ( 1525 mm ) if 6 zones are heated to the same temperature (within +/- 2 °C)
Temperature Controllers
  • Six PID automatic digital temperature controllers with 30 programmable segments for precise heating rate, cooling rate and dwell time control.
  • Built in overheating & broken thermocouple protection.
  • Over temperature protection and alarm are available.
  • +/- 1 ºC temperature accuracy for each controller.
  • Six K type thermocouples and one for each zone.
  • With RS485 Communication port and MTS-02 control module, operators can utilize PC to control the furnace in distance (< 5 meter)
Tube & Flange
  • One 4" OD x3.62" ID x 100" L  quartz tube and quick clamped flange
  • One pair stainless steel vacuum flange is included with quick assembling flange ( a outside clamp for quick installation). Left flange with needle valve with 1/4" pipe port for gas inlet and one pressure gauge; Right flange with KF 25 port for vacuum pump connection as shown below
  • The furnace can accept quartz or mullite tube with 1" - 4" diameter  (Optional)
Dimensions Furnace: L2800mm x W500mm x H950mm
Temperature Controller: L700mm x W500mm x H1100 mm
Warranty One year limited warranty for electrical parts. (Consumable parts such as processing tubes,  o-rings and heating elements are not covered by the warranty, please order the replacement at related products below.)   
  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace can pass TUV(UL61010) or CSA certification after minor modification at extra cost. Certification fee is charged separately. (please click marks below to learn details)
Operation Instructions     
Shipping Weight & Dimension Furnace: 1250 lbs; 114"x39"x52"
Controller: 315 lbs; 48"x40"x56" 
Optionals(click picture to order at extra cost)
Application Notes

  • Tube furnaces with quartz/mullite tube are designed for using under vacuum and low pressure <0.2 bar/ 3 psi/ 0.02MPa
  • Attention: A two stage pressure regulator must be installed on gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
  • * Vacuum pressures may only be safely used up to 1500°C  
  • The flow rate for gases should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube

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