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Three Zones Sliding Tube Furnace (80m 1200°C Max m OD,) with Flanges for Fast Heating / Cooling - OTF-1200X-III-80-SL

8-10 wks delivery
Item Number: OTF-1200X-III-80-SL
Transported by LTL Freight (Truck)
OTF-1200X-III-80-SL is a three zone slide-able tube furnace with 3"IDx79" L quartz tube and flanges and a maximum working temperature up to 1200°C. One pair of sliding rail is installed on bottom of furnace to allow sliding the furnace from one side to another to achieve max. heating and cooling rates up to 100°C/min. For fastest heating, the furnace may be pre-heated to a desired temperature and then be slided to the sample's position. As for fastest cooling, the furnace can be slided to another side after sample heating is completed. Moreover, the heating and cooling rates may reach 15°C/s under vacuum or inert gases. This furnace provides an alternative for rapid thermal processing at the lowest cost


Furnace Structure

  • Double layer steel structure with dual air cooling fans.
  • One pair of sliding rails are installed on bottom of furnace, which allows furnace to be manually moved from side to side.
  • Three heating zones with total  24" length ( 8"L for each zone )
  • Vacuum flanges and a digital vacuum gauge are installed  for immediate use.
  • Slding rail length is about 1200mm, the furnace can slide 600 mm distance.
  • One slide stopping clamp is included for holding the position of the furnace.


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

Max. Temperature

1200°C (<1 hour)

Continuous Temperature


Heating Zone Length

  • Three zones: 610mm (24") in total
  • Z1 - Z2 - Z3:152.4mm (6") + 304.8mm (12") + 152.4mm (6")

Constant Temperature Zone

 300 mm (+/-1°C @ 400-1200°C)

Heating Elements

Fe-Cr-Al Alloy doped by Mo

Processing Tube Size

High purity fused quartz tube

Size:  OD:  80 x ID 75 x Length 2000  ( mm)

Two foam ceramic blocks are included which must be placed inside tube to avoid heat radiation damaging O-ring

Temperature Controller

  • Three temperature controller with 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built-in over temperature alarm and protection allows for operation without attendant.
  • Three  K type thermal couples are included.
  • Optional:  
    • The furnace may be operated by PC by installing control module. Please order a MTS-02 control module at extra cost. 
    • If you order the PC control module together with the furnace, we will install and test it before shipping. We recommend you to order a computer (laptop) from us to avoid software installation problems. For more information please click here.

Temperature Accuracy

+/ - 1°C

 Vacuum Flanges

  • Stainless steel vacuum flanges are installed on both ends of tube with heavy duty support. 
    • Left flange: hinged type flange for easy operation with KF-25 pump connector, digital vacuum gauge and needle valve.
    • Right flange: one needle valve and 1/4" thermocouple feed-through. An 18" length x 1/4" dia. K type thermocouple (included) connected to an Omega temperature calibrator (included) will be inserted through this flange to monitor the heating and cooling rates of the sample's position during furnace sliding.
  • Click pictures below to see details:

    Right Flange

    Left Flange

    Temp. Calibrator

    24" K type T/C

    Digital Vacuum Gauge

     Vacuum Level 

    • Limited by pump ( pump is not included, click on pictures to order )
      • 10E-5 torr can be reached by molecular pump
      • 10E-2 torr by mechanical pump.

     Sliding Rails / Table

    • Double sliding rail made by Cr plated steel

    • Sliding length: 1200 mm

    • One slide stopping clamp is included for holding the position of the furnace.


    • 2500 L, × 510 H ×750W,  mm

     Net Weight

    ~ 250 Kg

    Shipping Dimension

    90" x 40" x 45" (inch)

    Shipping Weight

    600 lbs


    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.  please click marks below to learn details )

    Application Notes

    Click here to learn the installation of a gas regulator


    • Fast sample cooling can be achieved by sliding the heating chamber away. Please wear protective gears such as heat resistant suit & gloves if you intend to do so. DO NOT TOUCH THE TUBE SURFACE WHEN IT IS HOT!

    Operation Instructions


    Related Products

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    1. Prices listed online are valid for US market and whom 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 cost.
    3. The prices listed are subject to change without notice.