(+65) 6284 3818



Split Long Tube Furnace with 5" Dia Quartz Tube (36" Heating Zone) & Vacuum Flanges - OTF-1200X-5L

0.0/5 rating (0 votes)


OTF-1200X-5L is a UL Standard splittable single-zone tube furnace that can achieve fast heating up to 1100°C with a 17" length constant temperature heating zone. The furnace includes one 5" (125 mm) O.D x 55"L fused quartz tube, one pair of vacuum sealing flanges and two vacuum valves & a pressure gauge for immediate use. The precision temperature controllers provide up to 30 segments of heating and cooling steps with +/- 1°C accuracy. It is an excellent furnace for annealing, diffusing and sintering samples in various atmospheres. SPECIFICATIONS

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.


 7 KW


 AC 208-240 Single Phase, 50/60 Hz

Max. Temperature

 1200° C (<1hr)

Continuous Temperature


Max. Heating Rate

 <= 20  oC /min

Heating Zone Length

  • Heating zone length: 880 mm ( single zone )
  • Constant temperature area: 240mm


Constant Temperature Zone

 240  mm (+/-1° C)

Heating Elements

 Fe-Cr-Al Alloy doped by Mo

Thermocouple Type

 K Type Thermocouple

Temperature Controller
  • MET certified 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built-in PID Auto-Tune function with overheating & broken thermocouple protection.
  • Over-temperature protection and alarm allows for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • RS485 Communications Port.
    • 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 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.
Tube Size and Materials
  • Made of high-quality Fused quartz with size of 130 mm O.D x 120 mm ID x 1400 mm L
  • Optional tube diameter:s  80mm, 100mm
  • 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)
  • Quartz blocks (optional) are ideal for cleaner processing environment and higher vacuum efficiency.
  • You may order flange support to avoid tube rotating ( click Pic below right )


Vacuum Sealing
  • One pair of SS 304 vacuum flange with double high-temperature silicone O-ring is Included/
  • Two-needle valves with 1/4" pipe adapter are installed on flanges.
  • One vacuum/ pressure gauge is installed one side flange
  • The vacuum level can reach 10^-2 torr by a quality mechanical vacuum pump and 10^-5 torr by molecular pump
  • Optional:
    • You may choose flange with a KF25 vacuum port for  faster and better vacuum, also, please choose quality mechanical pump or digital  molecular pump ( click picture below to order at extra cost )

Sliding Flange  

(Optional at Extra Cost)

  • One sliding flange for transporting samples (manually operated) is available as an option at $1995 extra cost.


  • Referring to the picture above, you may need to order two mobile carts  to support the sliding device ( click on underlined to order)


 1100 X 450 x 670mm

Net Weight

 80  Kg

Shipping Weight

 410 lbs

Shipping Package Size

 60x40x43  i nch


One year limited manufacturer warranty with lifetime support (Consumable parts such as furnace liner, processing tubes, and 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) for immediate use.
  • 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). Please contact us for more information.
  • Note: The software is only compatible with MTI’s Yudian Temperature Controller

  • CE Certified
  • NRTI or CSA Certification is available upon request, additional charges will apply
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
  • 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
  • Click here to learn how to set up a quartz/ ceramic tube and vacuum flange for MTI Tube furnace. ( also, click the picture below to see demo video )
  • Please click here to see our typical temperature profile calibration result at various temperatures. 
  • In order to obtain accurate temperature inside the tube furnace, please click here to learn how to calibrate the temperature on your own.

Operation Instructions

How to set up the furnace

Controller Operation Demo Video

How to create a Temperature gradient


Share this product

Register for new product information:    

Premier Solutions (PS) Pte Ltd Singapore

Please publish modules in offcanvas position.