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1200C Max 4“ Tube Atmosphere Controlled Vertical Quenching Furnace - OTF-1200X-VT-100-VTQ

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OTF-1200X-VT-100-VTQ is split Vertical Quenching Tube Furnace with vacuum sealed 100mm (4")   diameter quartz tube and liquid quenching tank, which is designed for quenching sample from high temperature ( Max. 1200oC) to ice water or oil to study material phase transition and microstructure.
(Auto electromagnetic sample release flange is added since 07/21/2016)


 Furnace Structure
  • Double layer steel structure with air cooling to keep case temperature < 65oC
  • Vertical and splittable for easy installation.
  • Liquid quenching tank is connected to 4" quartz tube via a gate valve and allow sample drop to liquid container
  • Click thum picture left for detail


 3 KW


 AC 208-240V Single Phase, 50/60 Hz

 Max. Temperature

 1200oC < 1 hrs

 Continuous Temperature

 1100oC < continuous

 Max. Heating Rate

 <= 20oC /min, recommended heat: <= 10oC /min

Tube Size and Materials

Heating Zone

  • Heating Zone length:   440mm 
  • Constant Temperature:       150 mm ( within+/- 1oC)

Temperature Controllers

  • 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built in PID Auto-Tune function with overheating & broken thermocouple broken protection.
  • Over temperature  protection and alarm allows for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • One K-type thermocouple.
  • RS485 Communications Port.
Electromagnet Sample Release Flange & Quenching
  • Full automatic electromagnet sample release flange
  • Hinged plate hooks the cable, which pulls the sample.
  • Hinged plate drops when the electromagnet powers off. The sample and the cable fall into the quenching tank.
  • Rings are available for hanging the tube block with cables.
  • Bottom flange is connected with a 4" gate valve ( manual operated ) via CF-100 adaptor
  • The gate valve is connected with a quenching media container in size 400 x400 x 200 H ( mm )
  • Caution: You must use ice water or cooled oil as quenching agent if quenching under vacuum.
1. Flange Structure 2. Flange Operation 3. Gate Valve 4. Quenching Tank 5. Quenching 6. Pulling Cable
  • Compared to electromagnet cable drop quenching, traditional approach (Cable Cut Quenching) consumes cables.
Trad. Quenching in Air Trad. Quenching in Vacuum
Gas Purification and Circulation
  • EQ-RMP-1 is an automatic recirculating moisture and oxygen purification system, which can provide an environment with moisture and oxygen concentration lower than 1 ppm for MTI's furnaces and gloveboxes. 
  • Two-columns of Molecular sieves are Built-in in the system. One is for removing oxygen and another is for removing moisture up to < 1 PPM
  • The automatic pressure control system is built in to keep the pressure at a constant level
  • 6" color PLC touch panel is included which can set and display the humidity and pressure level
  • Oxygen sensor and moisture sensors are included. 
Hermetic Quenching Tank
  • Hermetic quenching tank is optional for air-sensitive materials, which enables the entire quenching process under atmosphere control
  • Please contact MTI for further inquires. 

 Vacuum Level

  • 0.05  torr (Depends on the vacuum pump)
  • Click Picture below to order vacuum pump separately

 Heating Element

Fe-Cr-Al Alloy doped by Mo


660L × 400 W × 1450 H   (mm)

 Net Weight

~85Kg (excluding mobile cart)

 Shipping weight



  • One year limited warranty (Consumable parts such as heating elements, processing tubes
    and o-rings are not covered by the warranty, please order the replacement at related products below.)

Laptop,&  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.


  • CE Certified
  • NRTL UL61010)  or CSA certification is available at extra cost.(please click marks below to learn details)

Application Notes

Click here to learn the installation of a gas regulator

Operation Instructions

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