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24" Three Zones Split Tube Furnace upto 5" Processing Tube (no vacuum flange or quartz tube) - OTF-1200X-III-S-NT

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Item Number: OTF-1200X-III-S-NT


Upgrade to Eurotherm Temp Programmer (three zone) Upgrade + 15" Laptop + Accessories Kit
OTF-1200X-III-S-NT  is a split-able three-zone tube furnace without processing tube and flange. Three 30 segments temperature controllers are installed with three K-type thermocouples. 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 various gases atmosphere up to 1200°C.  Please select the tube adapter in the options bar to view the price and model. We will provide one set of tube adapters free of charge

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).
  • The temperature controller can be separated from the furnace and operate the furnace in the remote location.
Rated voltage
AC 208-240V Single Phase, 50/60 Hz (30A breaker required; Powder cord is included without plug)
Power consumption
5 KW 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)
Quartz tube & Vacuum Flange (Optional)
  • Furnace module for 80mm O.D  (3") x 1200 mm long tube.
  • Please contact us for 1" to 5" O.D. tube furnace module.
  • The vacuum flange and quartz tube are not included.  Please click picture below to choose
Heating temperature
  • Max. Heating Temperature: 1200°C;
  • Continuous Heating Temperature: 1100°C;
  • Max. Heating Rate: 20°C/min;
Temperature Controllers
  • Three PID automatic control with 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built-in overheating & broken thermocouple protection.
  • Over temperature protection and alarm allows for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • Three K-type thermocouples (one for each zone).
  • RS485 Communications Port.
  • Optional:  
    • The furnace may be operated by PC by installing a control module. Please order an MTS-02 control module at extra cost. 
    • If you order the PC control module together with the furnace, we will install and test it before shipping. We recommend you to order a computer laptop from us to avoid software installation problems. For more information please click here.
750mmL x525mm Wx670 H 
Net Weight
~70 kg
One year limited warranty for electrical parts. (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.)
CE Certified
Shipping dimension
Shipping weight
Application Note
Operation Instruction    

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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.