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UL Standard 1200°C Split Tube Furnace with Vacuum Flanges & Optional Quartz Tube 60, 70, 80, or 100 mm O.D. - OTF-1200X series

Transported by LTL Freight (Truck)

Product Options

UL/CSA Certification:
furnace size:


Upgrade to Eurotherm Temperature controller
OTF-1200X-UL furnace is configurated to meet UL/CSA certificate standard. The furnace can adopt a 60, 70, 80 or 100mm O.D quartz tube and a pair of stainless steel vacuum sealing flanges with needle valves & gauge allow heating samples under vacuum or gas flow conditions. The temperature of this tube furnace is controlled by a high precision digital controller which provides 30 programmable segments with +/- 1°C accuracy. The max. working temperature is 1200°C

Furnace Structure

  • Double layer steel casing with air cooling keeps furnace surface temperature lower than 60°C.  
  • High purity fibrous alumina insulation for maximum energy saving.
  • The special refractory coating on liner and heating element to increase furnace life.
  • Split cover with Interlock protectioncut the power if door open during furnace heating process.
Voltage and Power Input voltage 208 - 240VAC Single Phase, 50/60Hz
3KW, Circuit breaker 20A

Heating Temperature
  • Fe-Cr-Al Alloy doped by Mo
  • Max. heating temperature: 1200°C (N2 or other inert gas must be filled inside the tube to resist deformation)
  • Continuously heating temperature: 1100°C
  • Heating rate: 20°C /min Ma
  • Thermal Couples: K type 220mm (8.7") Length with Ceramic Sheath, please click the link to order spare.
Heating Zone
  • Total heating zone length: 440mm (~ 18")
  • Constant temperature zone: 150mm (+/1°C)
  • Please click the image below to view the temperature distribution at 980°C.
      Temperature Distribution
Temperature Controller

  • FA-YD518P-AG temperature controller is included.
  • Proportional–integral–derivative control (PID control) and auto-tune function
  • 30 segments programmed with ramping, cooling and dwelling steps
  • Built-in over-temperature alarm and thermocouple failure alarm
  • +/- 1 ºC temperature control accuracy
  • Default DB9 PC communication port
  • MET Certified
Temperature controller (optional)

  • MTS02-Y Temperature control software kit (for YD518P series controllers) + 15" laptop package is available at the options bar. Click for the detail information about the MTS02-Y software kit. 
  • You may upgrade the temperature controller to the Eurotherm 3204 Temperature Controller which is fully compatible with LabVIEW. This package includes a Eurotherm 3204 programmer, a communication cable (RS485 - USB) and a software CD. Click the pic below to view the full spec of Eurotherm 3504 temperature controller.           
Fused Quartz Tube Size OTF-1200X-60
60 O.Dx55 I.Dx1000 mm L
70 O.Dx65 I.Dx1000 mm L
80 O.Dx74 I.Dx1000mm L
101 O.Dx92 I.Dx 1000mm L
Refractory Blocks
  • Two fibrous ceramic tube blocks are included for blocking heat radiation from inside tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating)
  • Quartz blocks (optional) are ideal for cleaner processing environment and higher vacuum efficiency.
  • You may order flange support to avoid tube rotating ( click Pic below right )

Vacuum Flange

  • One pair of SS 304 vacuum flange is included
  • Left flange:
    • one thermal feedthrough (for 1/4O.D sheathed thermocouple)
    • one needle valve
    • one mechanical vacuum gauge -0.1Mpa to 0.15Mpa
    • one barb fitting ( click PiC, below left-2 for detail)
  • Right flange:
    • one KF-25 vacuum port  and one needle valve.
Note: The standard flange for 70mm O.D tube has no KF-25 port or thermocouple feedthrough. Click there to see detail pic.  

  • The flange with quartz window is available for in-situ Raman or Mossbauer analysis
Vacuum Pressure
  • 10E-2 torr by quality mechanical vacuum pump 
  • 10E-5 torr by the turbo molecular pump.
  • The vacuum pump is optional. Please click here to choose a vacuum pump. 
Product Dimensions
Furnace: 590mm(L) ×380mm(W) × 520mm(H)
Net Weight
Shipping Dimensions 45"(L) x 45"(W) x 42"(H) 
Shipping Weight 200lbs
One year limited warranty with lifetime support (Consumable parts such as processing tubes, O-rings are not covered by the warranty, please order replacements 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
Compliance CE Certificate
UL ready
CSA ready
Click here to understand the certificate and condition.
Application Notes

Click here to learn the installation of a gas regulator
  • Tube furnaces with quartz tubes are designed for using under vacuum and low pressure < 0.2 bars / 3 psi / 0.02 MPa. Vacuum pressures may only be safely used up to 1000°CThe flow rate for gasses should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube
  • 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.
  • Heating module is consumable.  Please click picture below-right to order a replacement.
  • The furnace with Sliding flange is available 
Operation Instructions & Video

Click here to learn How to set up quartz/ ceramic tube and vacuum flange for MTI Tube furnace. ( also, click picture left to see demo video )


OTF-1200X-70 OTF-1200X-80 OTF-1200X-100
Alumina foam block for tube furnace 1 pair

EQ-F-T-block-70 EQ-F-T-block-92
Vacuum flanges
1 pair

EQ-FL-80 EQ-FL-101KF25-FT
Fused quartz tubing
1 unit

EQ-QZTube-80D40 EQ-QZTube-100

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