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Three Zone Alumina Tube Furnace with Vacuum* Flanges (60mm OD. 1700C Max.) - GSL-1700X-60-III

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Item Number: GSL-1700X-60-III
Transported by LTL Freight (Truck)


Upgrade to Eurotherm Temp Programmer (three zone) Upgrade + 15" Laptop + USB-to-RS485 Cable

GSL-1700X-60-III is a CE certified 60mm OD three zones tube furnace with complete vacuum sealing flange. Each heating zone is 12" in length and controlled by three precision 30 segments digital temperature controllers independently. One zone (center zone) is heated by Super-1800 MoSi2 elements up to 1700°C, and another two zones are heated by SiC elements up to 1400°C. The tube furnace can create the various thermal gradient by adjusting three zones temperature. It is an excellent furnace to prepare functional materials under thermal gradient, and also can be used for epitaxial film growth by CVD.


Furnace Structure

  • Double layer steel case with two cooling fans, which ensure low surface temperature
  • High purity fibrous alumina insulation for energy saving


10KW (75A air breaker required )


AC 220-240 Single Phase, 50/60 Hz

Max. Temperature

Zone one: 1400 °C (1500 °C<1hour), Zone two: 1700 °C Zone Three:  1400°(1500 °C<1hour)

Max. Heating Rate

<=10 °C /min

Normal Heating/cooling Rate

5°C /min

Thermal Block Placement

  • Two thermal blacks are included. Please picture below to learn how to place them inside tube
  • You may order flange support to avoid tube rotating ( click Pic below right )
Heating Zone Length
  • Three zones: total 25" (630 mm) heating zone (included two refractory separators)
    • Zone 1: 7.5" (190 mm) heated by 4 pcs U type SiC(30x300 mm) 
      • Working temperature  800 - 1400°C (1500 °C<1hour)
      • Heating rate: 10°C/min
    •  Zone 2: 10" (250 mm) heated by 6 pcs U type MoSi2(30x300 mm) 
      • working temperature 800 - 1700°C
      • Max. Heating rate: 5°C/min
    • Zone 3: 7.5" (190 mm) heated by 4 pcs U type SiC(30x300 mm) 
      • Working temperature  800 - 1400°C (1500 °C<1hour)
      • Max. Heating rate:  10°C/min
  • Constant Temperature Zone Length ( 3 controllers at same temperature):  200mm with+/- 1C)

Tube Size and Flange

  • 99.8% purity Alumina Tube
  • 2-3/8" ( 60mm) O.D.x 2-1/8"I.D. (54mm) x 48" (1200mm) Length
  • 60 mm stainless steel vacuum sealing flange with valve and meter is included
  • Two porous ceramic blocks are included for protecting flange from heating radiation
  • Vacuum pressure  can reach to 10-4 torr with turbo vacuum pump
Fitting Ports
  • In order to increase the throughput and achieve high vacuum, you may replace the standard barbed hose fitting with the KF25 adapter, please click underline to order.
  • For supplying high-pressure gas, you may replace the standard barbed hose fitting with the Swagelok Tube Fitting, please click underline to order

Temperature Controllers

  • Three digital controllers with microprocessor-based PID control and self-tuning
  • Each has 30-segments programmable with protection for overheated and broken thermocouple
  • Temperature Accuracy: +/- 1ºC
  • Thermal Couple: One B type(210mm long TC for central zone), two S type (210mm long TC for side zones)

European Temperature Controllers (optional upgrade)

  • 1 heating channel
  • 1 programs of 8 or 24 segment
  • Alarm Relay: Form 'A' and Form ‘C’ built-in 
  • Digital Communications: RS485
  • Temperature Accuracy:  ±  0.1ºC
  • Recipes: Using a PC tool recipes can be created that can be used to change the operating parameters of the 3000 simply by selecting a new recipe via the HMI. This is very useful where multiple products are processed using the same controller but require different parameters to be set.
Power Cable & Plug
  • 10 feet length 8-3 AWG heavy duty UL approved power cable is included
  • Extra length cable can be ordered by click picture left
  • The plug is not included. You can order from your local hardware store according to female plug in your lab


863 L x 457 W x 711 H mm (34 L x 18 W x 28 H inch)

Net Weight

150 kg


One year limited warranty with lifetime support(Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the warranty, please order the replacement 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
  • UL / MET / CSA Certification is available upon request, additional charges will apply
  • Temperature controller is MET and CE Certified
  • Transformer is UL Certified
Operation Instructions          

Shipping Package Size After Crating

47"x45"x45"(1200L x 1150W x 1150Hmm)

Shipping Weight

180 kg

Application Notes

Optional Parts

                       Please click here to learn the installation of a gas regulator
  • The tube furnaces with alumina tube are designed for using under vacuum and low pressure < 0.02 Mpa / 0.2 Bar/ 3 PSI 
  • Never use graphite crucible in alumina tube.
  • 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.
  • The gas flow rate should be limited to < 200 SCCM ( or 200ml/min )
  • Vacuum limit definition for all alumina tube furnaces: * Vacuum pressures may only be safely used up to 1500°C

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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.