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1200°C Max Sliding Tube Furnace (80mm OD) with Flanges for Fast Heating / Cooling - OTF-1200X-80-SL

In stock
Item Number: OTF-1200X-80-SL
Transported by LTL Freight (Truck)


Upgrade to Eurotherm Temp. Controller
OTF-1200X-80-SL is a CE certified & UL Ready slideable tube furnace with 3"IDx55" L Quartz tube and flanges and a maximum working temperature up to 1200°C. One pair of sliding rail is installed on the bottom of the 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 slide to the sample's position. As for fastest cooling, the furnace can be slide to another side after sample heating is completed. Moreover, the heating and cooling rates may reach 15°C/s under vacuum or inert gasses. 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 is installed on the bottom of the furnace, which allows the furnace to be manually moved from side to side
  • Vacuum flanges and a digital vacuum gauge are installed for immediate use.
  • Sliding rail length is about 1200mm, the furnace can slide 600 mm distance


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

Max. Temperature

1200°C (<1 hour)

Continuous Temperature


Heating& Cooling Rates

  Heating Rate:
 15°C/sec (RT - 150°C);
 10°C/sec (150°C - 250°C);
  7°C/sec (250°C - 350°C);
  4°C/sec (350°C - 500°C);
  3°C/sec (350°C - 550°C);
  2°C/sec (550°C - 650°C);
  1°C/sec (650°C - 800°C);
0.5°C/sec (800°C - 1000°C);
Cooling Rate:
15°C/sec (1000 - 950°C);
10°C/sec (950°C - 900°C);
7°C/sec (900°C - 850°C);
4°C/sec (850°C - 750°C);
2°C/sec (750°C - 600°C);
1.5°C/sec (600°C - 500°C);

1°C/sec (500°C - 400°C);
0.5°C/sec (400°C - 300°C);
The max heating and cooling rate is achieved by pre-heat one side of processing tube to the target temperature and then slide the furnace to the other side. You may choose to place the sample in the pre-heat area or not.

Heating Zone Length

440mm ( single zone )

Constant Temperature Zone

120mm (+/-1°C @ 400-1200°C)

Heating Elements

Fe-Cr-Al Alloy doped by Mo

Processing Tube Size

High purity fused quartz tube

O.D. : 3.2" (80 mm)
I.D. : 3.0" (75 mm)
Length: 55" (1400 mm)

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


  • In order to achieve longer constant temperature zone, you may choose three heating zone furnace below at extra cost:
  • If you need 5" quartz tube,  it can be replaced by OTF-1200X-5S ( Pic below-right)
( 200mm constant Temp. Zone )     ( 260 mm  constant Temp. Zone )          5"OD x 12"L tube furnace

Temperature Controller

  • PID automatic control 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 an attendant.
  • Two K-type thermal couples are included.  One is built in the furnace to control furnace temperature, and another inserted into the tube to monitor sample real temperature profile.
  • One NIST certified thermometer is included to connect to the thermal couple inside the tube. the meter has RS232 Interface with Windows Software which can record temperature profile by PC.
  • PC control module is included
  • Advanced Temperature Control (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 3504 Temperature Controller which is fully compatible with LabVIEW. This package includes a Eurotherm 3504 programmer, a communication cable (RS485 - USB) and a software CD. Click the pic below to view the full spec of the Eurotherm 3504 temperature controller. 

Temperature Accuracy

+/ - 1°C

 Vacuum Flanges

  • Stainless steel vacuum flanges are installed on both ends of the tube with heavy duty support. 
    • Right flange:  KF-25 pump connector and needle valve.
    • Left flange: one needle valve and 1/4" thermocouple feed-through and digital vacuum gauge.
    • An 24" 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 the pump ( pump is not included, click on pictures to order )
      • 10E-5 torr can be reached by the molecular pump
      • 10E-2 torr by a 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.


    •  550 x 380 x 520  mm ( furnace only)

    • 1500 x 380 x 620 mm ( furnace + sliding )

     Net Weight

    ~ 100 Kg

    Shipping Package Size

    60" x 40" x 45" (inch)

    Shipping Weight

    305 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 the 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


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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.