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12 Zone Ultra-Long Split Tube Furnace with 6" OD x 20’ L Quartz Tube , 1100 ℃ Max.) - OTF-1200X-6M

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OTF-1200X-6M  is a  12-Zone & 20 Feet Long  6“0D  split tube furnace with separated temperature control units and a max working temperature of 1100oC. This 12 -zone furnace  18' long constant heating zone by setting all the temperature controllers at the same temperature. The furnace can accept processing tube up to 6" .   Touch Screen precision temperature controllers are built in a separate control box which allows PC control of the furnace from a certain distance. It is an excellent furnace to treat long strip samples under vacuum and controlled atmosphere. 
Furnace Structure
  • Double-layer steel case
  • High purity fibrous alumina insulation provides good energy savings.
  • Heating Element: 1300 °C grade Fe-Cr-Al Alloy doped by Mo
  • Modulated chamber, which allows the ultra-long to furnace easy shipping and installing
Power & Voltage  
  • AC 208-240V Single Phase, 50/60 Hz 
  • 30 KW Max. in tota
Max. Temperature       1100 °C (<1 hour)
Continuous Temperature       1050 °C
Max. Heating Rate <= 20 °C /min
Thermal Block Placement
Heating Zone
  • 12  independent heating zones: Each heating zone length  500 mm
  • Total zone length: 6000 mm, or 20'  in total 
  • Max. Constant temperature zone ~18‘ ’( 5500 mm ) if 6 zones are heated to the same temperature (within +/- 2 °C)
Temperature Controllers
  • One touch screen digital temperature controller built-in a separated unit, which can control 12 heating zones independently
  • Each channel is PID automatic controlled and saves 10 programs and each program has max. 30 segments
  • Built-in overheating & broken thermocouple protection.
  • +/- 1 ºC temperature accuracy.
  • 12 K type thermocouples (one for each zone).
  • RS485 Communications Port built-in. and software included, 
  • The furnace may be operated by PC ( please order PC separately ).
Tube & Flange
  • One 6 OD x5.6" ID x 22‘ L (6500 mm" )  quartz tube  is included
  • One pair of stainless steel vacuum flange is included with a quick assembling flange (an 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 40 port for vacuum pump connection as shown below
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.)   
Laptop, software & WiFi Control (Optional)
  • Brand new laptop with Microsoft Windows 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
  • Labview Based Temperature Control System (EQ-MTS01) enables users to edit temperature profile, manage heat-treatment recipes, record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters operating range.
  • The above features are available upon request at an extra cost (up to $1,000).
  • CE Certified
  • NRTL or CSA certification is available upon request at the extra cost
Operation Instructions     
Shipping Weight & Dimension  Onsite installation required
(click the picture to order at extra cost)
Application Notes

  • Tube furnaces with quartz/mullite tube are designed for use under vacuum and low pressure <0.2 bar
  • 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  

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