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UL Standard 1600°C Split Tube Furnace with Vacuum Flanges & Valves, Optional 60 or 80mm Alumina Tube - OTF-1600X-UL

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Transported by LTL Freight (Truck)

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OTF-1600X-I series furnace are UL/TUV standard split-able alumina tube furnaces with Kanthal GLOBAR SG 1650 grade SiC Heating Elements. The furnace can install with 60 or 80mm O.D high-quality alumina tubes along with a pair of smart stainless steel vacuum sealing flanges that can take either a valve / gauge which allows for heating samples under vacuum or flowing gas conditions up to 1600°C. The precision temperature controller can provide 30 segments heating and cooling steps with +/- 1°C accuracy.  

 Alumina Tube
 Alumina Tubes
(click underlined for specs)
O.D: 80 x I.D:74 mm x L 1000 mm
(click underlined for specs)
Furnace Structure

  • Double layer steel casing with air cooling to keep furnace surface temperature lower than 60°C.  
  • High purity fibrous alumina insulation for Max. Energy saving.
  • The special refractory coating on the furnace inner and heating element to increase furnace life.
  • 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)
Input Voltage
 208 - 240VAC SINGLE PHASE, 50/60Hz
 6.0 KW
Heating Temperatures
  • Max. Heating temperature: 1600°C (N2 or other inert gas must be filled inside the tube to resist deformation)
  • Continuously heating temperature: 1550°C ( without Vacuum)
  • Continuously heating temperature: 1500°C ( under vacuum)
  • Heating rate: 10°C /min Max.
Heating Zone
  • Total heating zone length: 390mm
  • Constant temperature zone: 160mm (+/-1°C)
Heating Elements

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)

Vacuum Sealing
  • Two stainless steel flanges with the vacuum gauge and valves. 1/4" pipe and KF25 adapters are installed in two ends respectively.
  • For fast & better vacuum, suggest you use stainless steel pipe ( click to order at extra cost ), as well as digital vacuum gauge. 
  •  Two pairs of 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)
    Vacuum Levels
    • 10^-2 torr by the mechanical vacuum pump.
    • 10^-5 torr by a molecular pump.
    • Leak rate < 5 mtorr / min.
     Vacuum pump is not included; please order separately at related products section
    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. 
    Product Dimensions
          610 L ×470 W × 755H,  mm
    Net Weight
    30 Kg
    Shipping Dimensions
    45 x 45 x 35 inch
    Shipping Weight
    250 0lbs
    One year limited manufacturer's warranty (consumable parts such as processing tubes, O-rings, and heating elements 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


    • 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. 
    •                   (click mark to learn what is )
    Application Notes

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

    • The tube furnaces with alumina tube are designed for using under vacuum and low pressure < 0.02 MPa / 0.2 Bar/ 3 PSI 
    • Never use graphite crucible in alumina tube.
    • Attention: A two-stage pressure regulator must be installed on a gas cylinder to limit the-the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator. 
    • Never heat the furnace while the gas release valve is closed and a positive pressure condition exists within the furnace chamber. The pressure gauge must be used to closely monitor the chamber condition at all times during the heating process; please open the gas release valve immediately once the chamber pressure has reached over 3 PSI to prevent unforeseeable damages.
    • .The flow rate for gases should be limited to < 200 SCCM ( or 200ml/min )
    • Vacuum limit definition for all alumina tube furnaces: * Vacuum pressures may only be safely used up to 1500°C
    Operation Instructions  ( Heating element installation )     


    OTF-1600X-60 OTF-1600X-80
    Alumina Foam Block for tube furnace 1 pair

    EQ-F-T-block-52 EQ-F-T-block-70
    Vacuum flanges
    1 pair

    EQ-FL-60 EQ-FL-80
    3 Alumina tubing 1 unit    Alumina Tubes EQ-TA-60D-M1000 EQ-TA-80D-M1000

    Part No.
    Quick Link
    KF-D25 series Vacuum Suite(vacuum pump, vacuum ball valve, vacuum bellows, quick clamps, KF adapter) Also you may buy individually.
    EQ-MTS02 Computerized Temperature Control System
    Compact Digital Vacuum Gauge & Controller with Power Supply (Up to 10-4 Torr)
    High vacuum station (Mechanical pump + turbo molecular pump.)
    Gas mix station (Float flow meter / Mass flow meter) (2, 3, 4channels selectable)
    Compact Flow Meter (float flow meter / mass flow meter)
    Quartz tube block /heat insulating tube block
    Quartz Boats /curcible /container /sample holder
    Heavy Duty Mobile Car for All MTI Tube and Box Furnaces
    Vacuum flange fittings and assembly

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    3. The prices listed are subject to change without notice.