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8 - 10" Hydrogen Tube Furnace with FeCrAl Processing Tube upto 1250°C - OTF-1200X-III-H

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Item Number: OTF-1200X-III-H
Transported by LTL Freight (Truck)
OTF-1250X-III-H is a UL/TUV standard Hydrogen Gas tube furnace with optioanl 8'' CrNiAl or 10" FeCrAl alloy processing tube and 3 heating zones, which is designed for  annealing Ti alloy component or any air sensitive material under high vacuum and hydrogen gas upto 1250 °C.

Model Number
OTF-1250X-III-H10 OTF-1250X-III-H8
Processing Tube
  • Option#1:  Kanthal APM alloy ( FeCrAl ) with 1250C Max. working temperature, 260 mm OD x 238 mm ID x 1300 mm L (Bottom left picture)
  • Option#2:  Cr20Ni25Al5 with 1250C Max. working temperature, 200 mm OD x 180 mm ID x 1300 mm L (Bottom right picture)
Furnace Features
  • Double layer steel case with air cooling to ensure furnace surface temperature < 60 °C
  • Energy saving high purity fibrous alumina insulation.
  • CrNiAl or  FeCrAl high-temperature alloy tube with max. working temperature of  1250 °C
  • SiC heating element with 3 heating zone and  provide 700 mm length constant temperature zone within +/- 5 °C.   
  • Metallic radiation reflection as thermal block for high vacuum 
  • Optional customized frame made of Mo or Ti alloy is available upon request to place saple inside processing tube.
  • Optional:  Splitable cover  design is available at extra cost.
Power & Voltage  
  • AC 208-240V Single Phase, 50/60 Hz 
  • 9 KW Max. in total
Heating Zone Length
  • Total heating zone length 900 mm (36")
  • Three zones: 300 mm + 300 mm + 300mm (12" per zone)
  • Constant temperature zone: 750 mm (if three zones are in the same temperature within+/- 2°C)

Working Temperature
  • Max. working                       1250°C 
  • Heating Rate                       10°C /min
Vacuum Flange
& Vaccum Gauge
  • One pair stainless steel hinged type vacuum flange is included 
    • Left flange installed with needle valve with 1/4" pipe port for gas inlet 
    • Righ flange built in K25 port and Anti-Corrosive digital vacuum gauge to connect a vacuum pump
  • Optional: water cooling flange is available upon request at extra cost.
Temperature Controllers
  • Three digital controllers with PID/self-tuning functions and 30 segments programmable.
  • Thermocouple: three K type thermocouples (one for each zone)
    Control accuracy: +/- 1°C
  • Software for PC control is available as optional ( click picture below to order )
Hydrogen Burning System

    • One Hydrogen burnoff column is built in left flange
    • An ignition device already installed to incinerate flowing gas and detect burner temperature to ensure H2 burner is in working condition. If H2 does not burn properly, the controller will shut down the H2 gas delivery valve immediately.
    • Warning:  You must install a certified Hydrogen detector in operation facility to alarm hydrogen leaking b accident.  If you can not find in the local store, please click the link below to order 3M hydrogen detector from us at extra cost.
    Hydrogen Detector System
    • One Honeywell UL Approved Sensepoint Gas Detector is Integrated into the system.
    • Working Temperature Range:   40ºF to +149ºF (-40ºC to +65ºC)
    • Alarm Point:                            H2 Limited Explosive Line 10% (10% LEL).  Once detecting H2 gas beyond the point, it will shut off the inlet valve to the H2 automatically.

    • The tube furnace should be calibrated regularly to maintain the temperature accuracy and uniformity. We are providing a simple calibration kit for you to complete this job at extra cost The complete calibration kit includes (click the underline to see details):
    • You may consider to order turbo pump for hi-vacuum upto 10-6 torr ( click pic below right to order )
    • You may use precision gas delivery system to deliver H2 gas at constant flow
    • If  using water cold flange you may need a recirculating water chiller.
    • One year limited warranty (Consumable parts such as processing tubes, O-rings, and heating elements are not covered by the warranty).  

    Attention: A free course of safety operation training at MTI field is required to purchase this furnace. A customer's side training is also available upon request at extra cost. If the users believe that they have sufficient experience and knowledge to handle the furnace in the dangerous or emergent situation, a liability release agreement must be signed at the purchase. MTI Corp. is not responsible for any damages caused by misuse without the safety operation training. Any damages caused by the corrosive and acidic gases are not under the coverage of the MTI One Year Limited Warranty.
    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 )
     Furnace Dimensions
    1879 L x 680W x 920 H mm (74" L x 24.5" W x 37" H)
     Product Net Weight

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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.