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1500C Vacuum Vertical Tube Furnace ( 84mm OD) w/ Sample Rotation & Lifting System - OTF-1500X-80-VTHV

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OTF-1500X-80-VTHV is 1500°C Max. high temperature and high vacuum vertical tube furnace   The crucible that hangs inside tube can be rotated under vacuum for uniform sintering, and crucible can be lift manually to make sample change at easy.  Water cooling flanges and recirculating water chiller are included for immediate use.


 Furnace Structure
  • Double layer steel structure with air cooling to keep case temperature < 65oC
  • Vertical and splittable for easy installation.
  • Water cooling flange with recirculating water chiller 
  • The crucible that hangs inside tube can be rotated under vacuum by DC moter under vacuum or controlled atmorsphrer.
  • The crucible can be lift manually to make sample change at easy ( after open flange )


  5.5 KW


 AC 208-240V Single Phase, 50/60 Hz

 Max. Temperaturee

 1500oC < 30 minutes

 Continuous Temperature

 1400oC < continuous

 Max. Heating Rate

  <= 10oC /min

Heatig Element

  • 1500C grade SiC---12 pcs
  •    ( click thumb to order spare tube )

Tube Size and Materials

  • Mullite tube made in the USA
  • OD:84 mm x ID 72:mm x Length: 1393 mm ( included )
  •   ( click thumb to order spare tube )

Heating Zone

  • Heating Zone length:            440mm 
  • Constant Temperature:       150 mm ( within+/- 1oC)

Temperature Controllers

  • 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 allows for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • Five K-type thermocouples (one for each zone).
  • RS485 Communications Port.
  • PC controlled software and interface module are included
 Vacuum Seal Flange
  • One pair of 80 mm water cold stainless steel flanges with vacuum gauge and valves  included
  • One 16 L/m recirculating water chiller is included

 Vacuum Level

  • 10-3 torr by mechanical pump ( click picture below to order separately )
  • 10-5 by turbopump

 Heating Element

 Fe-Cr-Al Alloy doped by Mo

 Power Cable & Plug 

  • 10 feet length 10-3 AWG heavy duty UL approved power cable is included. Extra length cable can be ordered by click picture below-left
  • The plug is not included. Browse our catalog for compatible plugs or obtain one from a local hardware store. 


660L × 400 W × 1450 H   ( mm )inner if 

 Net Weight

 about 85Kg (excluding mobile cart)

 Shipping weight



  • One year limited warranty (Consumable parts such as heating elements, processing tubes
    and o-rings are not covered by the warranty, please order the replacement at related products below.)

Laptop, software & WiFi Control (Optional)

  • Brand new laptop with Microsoft Window 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
  • Labview Based Temperature Control System (EQ-MTS01) enables user to edit temperature profile, manage heat-treatment recipe, record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters operating range.
  • Above features are available upon request at an extra cost (up to $1,000). Please contact us for more information.
  • Note:   The software is only compatible with MTI’s Yudian Temperature Controller


  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace is ready to pass TUV(UL61010)  or CSA certification at extra cost. ( please click marks below to learn details )

Application Notes

Click here to learn more about the installation of a gas regulator

Operation Instructions

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