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Split Vertical Tube Furnace with 80mm Quartz Tube & SS Vacuum Flanges - OTF-1200X-VT-80

8-10 wks delivery ARO
Item Number: OTF1200XVT80
Transported by LTL Freight (Truck)

OTF-1200X-VT-80 is a split Vertical Tube Furnace with vacuum sealed 80mm diameter quartz tube, which can achieve faster sample heating and quenching in the vacuum or flowing gas. The precision temperature controller can provide 30 segments of heating and cooling steps with +/- 1°C accuracy. It is an ideal furnace for making quenching tests and temperature measurements. The vertical tube furnace is installed in a heavy-duty mobile for easy moving.


Furnace Structure
  • Double layer steel structure with air cooling to keep case temperature <65°C
  • High purity fibrous alumina insulation with the Special coating to ensure max. energy saving




AC 208-240V Single Phase, 50/60 Hz

Max. Temperature

1200°C(<1 hr)

Continuous Temperature

1100°C for each zone

Max. Heating Rate

<= 20°C/min.

Processing Tube

  • High purity quartz tube with 1200oC max. working temperature
  • Size: OD: 80 mm,x  ID. 72 mm x 1000mm Length
  • 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

440mm (single zone)

Constant Temperature Zone

150mm (+/-1°C)

Temperature Accuracy

+/- 1°C

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 allows for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • RS485 Communication Port.
    • Advanced Temperature Control (Optional)
    • MTS02-Y Temperature control software kit (for YD518P series controllers) + 15" laptop package is available at the options bar. Click for detailed information about the MTS02-Y software kit. 
    • You may upgrade the temperature controller to the Eurotherm 3504 Temperature Controller which is fully compatible with LabVIEW. This package includes a Eurotherm 3504 programmer, a communication cable (RS485 - USB), and a software CD. Click the pic below to view the full spec of Eurotherm 3504 temperature controller.
Vacuum & Fitting Ports

Vacuum Level

  • 10E-2 Torr by a mechanical vacuum pump.
  • 10E-5 Torr by the molecular pump.
  •  Leak rate < 5 mTorr / min.

Heating Element

1300°C Fe-Cr-Al Alloy doped by Mo


550mm(L) x 380mm(W) x 520mm(H) exclude mobile cart 

600mm(L) x 600mm(W) x 1200(H) install with mobile cart

Net Weight

About 80kg (excluding mobile cart)

Shipping  size

48"(L) x 40" (W) x 72''(H)

Shipping weight



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

Laptop, software  (Optional)

  • Brand new laptop with Microsoft Windows 10 and Microsoft Office 2013 (30 days free trial) 
  • Labview-Based Temperature Control System (EQ-MTS01) enables users to edit temperature profiles, manage heat-treatment recipes, and record and plot data for MTI furnaces.

  • CE Certified
  • NRTL (UL61010)  or CSA certification is available at extra cost. 

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

  • Customers may calibrate temperature before use to obtain accurate temperature inside the tube furnace,  please click here to learn how.
  • Please click the picture below to learn how to quench samples in gas flow and vacuum
    The furnace ca be modified into an HPCVD ( hybrid physical-chemical vapor deposition ) furnace via DIY a sample susceptor ( click picture below-right to see how )
    • Approach#1: Traditional wire cut and free-falling
    • Approach#2: Electromagnetic release and free-falling. Please contact us for the customization of this feature.

Click here to learn the installation of a gas regulator

  • The tube furnaces with quartz tubes are designed for use under vacuum and low pressure <0.2 bars / 3 psi / 0.02 MPa
  • 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.
  • Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C 

Operation Demo Video


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1. Prices listed online are valid for the US market and who pay by credit card only. There will be extra charges for shipping & handling. Price various from country to country.
2. We may add extra charges for paper order and net30 terms due to extra labor costs.
3. The prices listed are subject to change without notice.