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24"L 3-Zone Tube Furnace w/ Optional Quartz Tube & Flange (60 - 130mm, 1200C Max.) -OTF-1200X-III-S-UL

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OTF-1200X-III-S is CE/UL/CSA certified* 24" Long ( 6"+12"+6")  split-able three-zone tube furnace with quartz tube (size selectable) and conventional flange. Three 30 segments temperature controllers are installed with K-type thermal couples. Microprocessor-based self-tuning PID provides excellent control with no overshooting and  +/- 1 °C accuracy. It is an excellent furnace for sample annealing, diffusion, and sintering in the various gas atmosphere up to 1200°C.
Furnace structure
  • Double-layer steel case with two cooling fans which ensure low surface temperature;
  • Energy-saving high purity fibrous alumina insulation; 
  • Two fibrous ceramic tube blocks are included for blocking heat radiation from inside of the tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating).
  • Quartz block (Optional) is ideal for more cleanness and a higher achievable vacuum.
  • The furnace can be separated from the temperature controller and place it on remote location

            Click here to choose a crucible

Rated voltage AC 208-240V Single Phase, 50/60 Hz (30A breaker required; Powder cord is included without plug)
Power consumption 5KW Max.
Heating elements Fe-Cr-Al Alloy doped by Mo
Heating zone length
  • Three zones: 610mm (24") in total
  • Z1 - Z2 - Z3:152.4mm (6") + 304.8mm (12") + 152.4mm (6")
  • +/-1ºC Constant Temperature Zone: 260 mm length
  • +/-2ºC Constant Temperature Zone: 480 mm length (click the pic below for detail)
Fused Quartz Tube 
Quartz Tubes 
Model: OTF-1200X-III-S-UL-60
60 O.D x 55 I.D x 1200 L  (mm)
Model: OTF-1200X-III-S-UL-80
80 O.D x 72 I.D x 1200 L (mm)
Model: OTF-1200X-III-S-UL-100
101 O.D x 92 I.D x 1200 L  (mm)
Model: OTF-1200X-III-S-UL-5
130 O.D x 122 I.D x 1200 L
Warning: The tube furnaces with quartz tube are designed for use under vacuum and low pressure < 0.12 Mpa (absolute pressure)
Heating temperature
  • Max. Heating Temperature: 1200°C (<1 hour)
  • Continuous Heating Temperature: 1100°C
  • Max. Heating Rate: 20°C/min
Temperature Controllers    
  • Three MTE certified Temperature controller with 30 programmable segments 
  • Built-in PID Auto-Tune function with overheating & broken thermocouple protection.
  • Over-temperature protection and alarm allow for operation without an attendant.
  • +/- 1 ºC temperature accuracy.
  • Three K-type thermocouples (one for each zone).
  • RS485 Communications Port.           
European Temperature Controllers (optional upgrade)
  • 1 heating channel
  • 1 program 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.
Vacuum Flange and Gauge
  • One pair of SS 304 vacuum flange with double high-temperature silicone O-ring  is Included
  • Default flange with 1/4'' Bard fittings, 1/4'' tube feedthrough port (for 1/4" O.D thermocouple insert) and a KF25 vacuum portclick bottom left picture to see details )
  • One Vacuum/ pressure gauge is installed one side flange
  • The vacuum level can reach 10E-2 torr by the quality mechanical vacuum pump and 10E-5 torr by molecular pump
  • Optional:
    • You may choose a hinged type flange ( see pic below middle ) to make sample loading at easy.
    • You may order the digital molecular pump for a faster and better vacuum
    • You may order flange support to avoid tube rotating ( click Pic below right )
Dimensions 800mm(L) x435mm(W) x 670 mm(H)
Net Weight ~70 kg
Shipping Dimensions 55"(L) x 45"(W) x 45"(H)
Shipping Weight 340lbs
Warranty 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 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 users to edit temperature profiles, manage heat-treatment recipes, 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.
  • CE certified
  • NRTL or CSA certification is available upon request at the extra cost      
Application Notes
Operation Demo Video               

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