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Compact Split Tube Furnace w/ Insert-able Temp Calibrator and Vacuum System - OTF-1200X-S-50-LVT

Transported by LTL Freight (Truck)

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Quartz tube size and Flange:


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OTF-1200X-S-50-LVT high-temperature vacuum tube furnace is a split tube furnace for heating samples up to 1200°C. KF25 Gas Outlet and Digital Vacuum Gauge on the right flange connecting a 226L/m Mechanical Pump and Pump Filter while 1/4'' barb gas inlet on the left, allows the furnace to heat the sample in vacuum up to 1E-2 Torr or flowing gas. In addition, OMEGA 1/4’’ O.D K Type Thermal Couple comes to the left flange, can be inserted inside the tube to exactly measure the sample’s temperature by the readout from the OMEGA Calibrator. The precision temperature controller will provide 30 segments of heating and cooling steps with +/- 1 °C accuracy.

Furnace casing
  • Heavy-duty steel casing
  • Energy-efficient Al2O3 fibrous thermal insulation
Total Power 1.75 KW
AC 110V, Single Phase, 50/60 Hz
208V-240V version is available upon request 
Max. Temperature 1200 °C (<1 hour)
Continuous Temperature 1100 °C ( continuous)
Max. Heating Rate <= 10 °C/min
Tube Size and Materials OD: 50;  ID 43:  Length: 600  mm
Heating Zone length 8" (200mm)  ( single zone ). The following picture shows the temp. distribution across the heating zone, please click to enlarge.        
Thermal block placement
Constant temperature zone Length 2.3" (100mm)  (+/-1°C) @ 900 °C
Temperature controller PID automatic control via PWM solid relay with 30 steps programmable.
Temperature Accuracy +/- 1 °C
Vacuum Flange SS Vacuum Flanges (Left with 1/4 barb fitting and TC feed through, right with KF25 fitting Vacuum Gauge)
       Left Side 
       Right Side
Vacuum Level 1E-2  ( 50 m-torr)  by included Double Step Rotary Vane Vacuum Pump (110V, 156 L/m) with Exhaust Filter & KF-D25 Inlet  with Vacuum Bellows and KF25 Clamp
Heating Element Fe-Cr-Al Alloy doped by Mo
Temperature Calibrator
Thermal Couples: K type 18" x 1/4"Dia with Alloy sheath and Male Plug for Calibration up to 1335°C
Portable Digital Temperature Calibrator with USB and RS232 Interface & Software - NIST certificate
    • This furnace can be updated to 60 mm quartz tube with quartz observation window as pic below at the extra cost
    • For Vacuum to 10E-6 torr, you may consider turbopump with CF flange and one end open quartz tube.
                                 ( pls email for a quote)                      ( CF flange with one end closed tube can reaches  10-6 Torr  by turbopump )                                
    Laptop, software & WiFi Control (Optional)

    • Brand new laptop with Microsoft Windows 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
    • Labview Based Temperature Control System (EQ-MTS01) enables users to edit temperature profiles, manage heat-treatment recipes, record and plot data for MTI furnaces.
    • A wireless remote control provides up to 300 meters of operating range.
    • Note: The software is only compatible with MTI’s Yudian Temperature Controller
    Dimension 340 × 300 × 400 ( W x L x H)
    Net Weight 60 lbs (furnace only)
    Shipping Weight 150 lbs
    Warranty One-year limited warranty (Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the warranty, please order the replacement at related products below.) 
    Application Notes

    • Tube furnaces with quartz tubes are designed for using under vacuum and low pressure < 0.2 bar 
    • 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
    • The flow rate for gases should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube
    • How to set up a ceramic tube and vacuum flange for MTI tube furnaces.
    • For safety, you may consider putting the small tube furnace inside a fume hood. ( click picture left to see )
    • NRTLs or CSA certification is available at extra cost. 
    Operation instruction    

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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.