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1200C Split Tube Furnace with Optional Quartz Tube 60, 70, 80, or 100 mm O.D. & Flange - OTF-1200X series

Transported by LTL Freight (Truck)

Product Options

UL/CSA Certification:
furnace size:
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 the door open during furnace heating process.
Voltage and Power
  • Input voltage 208 - 240VAC Single Phase, 50/60Hz
    3KW, Circuit breaker 20A
  • 3KW, Circuit breaker 20A

Heating Temperature
  • Fe-Cr-Al Alloy doped by Mo
  • Max. heating temperature: 1200°C ( inert gas must be filled inside the tube to resist deformation)
  • Vacuum heating temperature: 1000°C under vacuum
  • 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
Temperature controller (optional)

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 the inside tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating)
  • Quartz blocks (optional) are ideal for a cleaner processing 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.
  • Optional
  • An anti-Corrosive gas-type independent (above 10mbar) digital vacuum gauge with a wide range between 3.8x10-5 to 1125 Torr is optional. Aside from greater measurement precision, this gauge reduces the risks of chamber explosions caused by the incorrect reading of gas pressures due to gas-type dependency.
  • The flange with quartz window is available for in-situ Raman or Mossbauer analysis
Vacuum Pressure
  • 10E-2 torr by a quality mechanical vacuum pump 
  • 10E-5 torr by the turbopump.
  • 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 Windows 10 and Microsoft Office 2013 (30 days free trial)
  • Labview Based Temperature Control System (EQ-MTS01) enables the user to edit temperature profiles, manage heat-treatment recipe, record, and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters of operating range.
  • The above features are available upon request at an extra cost (up to $1,000). 
  • Note:  The software is only compatible with MTI’s Yudian Temperature Controller
  • CE Certificate
  • NRTL or CSA certification is available upon request
Application Notes

Click here to learn the installation of a gas regulator
  • Tube furnaces with quartz tubes are designed for use 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.
  • The heating module is consumable.  Please click the 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 a 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-52 EQ-F-T-block-62 EQ-F-T-block-70 EQ-F-T-block-92
Vacuum flanges
1 pair
EQ-FL-60KF25-FT EQ-FL-70 EQ-FL-80KF25-FT
Fused quartz tubing
1 unit
EQ-QZTube-60G-1000 EQ-QZTube-70G-1000 EQ-QZTube-80D40 EQ-QZTube-100

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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.