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1200°C Max. Split Tube Furnace - 44 cm Heating Zone ( adopts processing tube from 1"- 4") - OTF-1200X-NT

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OTF-1200X is a CE-certified split-able tube furnace with Fe-Cr-Al alloy heating elements that can adopt 1" to 4" O.D processing tubes. The temperature of this tube furnace is controlled by a high precision SCR power controller with +/-1 oC accuracy and a 30 segments programmable digital controller up to 1200oC.  It is an ideal furnace for building your own heating device for applications such as thermal oxidizing, diffusion, CVD, and high vacuum reactor.


Furnace Construction
  • Double-layer steel casing with air cooling keeps furnace surface temperature < 60°C.
  • High purity fibrous alumina insulation for maximum energy saving.
  • High purity alumina coating on refractory ceramics for longer service life.


2.5 KW


AC 208-240 Single Phase, 50/60 Hz

Heating Temperature

  • Max. heating temperature: 1200°C (< 1 hr)
  • Continuously heating temperature: 1100°C
  • Heating rate: 20°C /min Max.

Heating Zone

  • Total heating zone length:  440 mm length (~ 18")
  • Constant temperature: 150mm (+/1°C), 200 mm (+/-2oC)

Temperature Distribution

Please click the image in below to view the hot zone temperature distribution at 980°C.


Temperature Controller

  • 30 programmable segments for precise control of heating & cooling rate, and dwell time.
  • Built-in PID Auto-Tune function with overheating & broken thermocouple protection.
  • Over-temperature protection and alarm allow for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • RS485 Communications Port.
  • Optional:  
  • The furnace may be operated by PC by installing a control module. Please order an MTS-02 control module at extra cost. 
  • If you order the PC control module together with the furnace, we will install and test it before shipping. We recommend you to order a computer laptop from us to avoid software installation problems. For more information please click here.
  • The Eurotherm temperature controller is available with +/- 0.1ºC accuracy is available at the extra cost
  •          Eurotherm 3000 Series optional

Heating Elements

Fe-Cr-Al Alloy doped by Mo

Tube Adaptor

  • This is a furnace without a processing tube.  You must inform us of your tube diameter 
  • A pair of tube adaptors will be included, please choose the appropriate size in the drop-down menu.

Optional Parts

  • Please choose an appropriate tube here.
  • Various options of vacuum sealing assemblies can be ordered here.
  • Please click here to order a digital vacuum gauge for precision vacuum control up to 10-4  torr ( see bottom left picture below).
  • You may click here to order a flow-meter and install in tube flange ( see bottom right picture below ).
  • For all other furnaces accessories such as vacuum pumps, gas delivery systems, and etc., please visit the accessories here.
  • Two fibrous ceramic tube blocks can be used for blocking heat radiation from inside the tube (ceramic blocks must be fully inserted into the furnace chamber before heating).
  • Quartz blocks (optional) are ideal for clean processing and higher vacuum efficiency.


590mm (L) x 380mm (W) x 520mm (H)

Net Weight

40 Kg

Shipping Package Size 


Shipping Weight

200 lbs

Warranty One year limited warranty with lifetime support
  • CE Certified
  • RTL certification is available upon request at the extra cost
Application Notes
  • Tube furnaces with quartz tubes are designed for use under vacuum and low pressure < 0.12 MPa (absolute pressure)

Operation Video


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