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1700C Split Tube Furnace with Flanges & Valves, and 60mm Tube - OTF-1700X-UL

1700C Split Tube Furnace with Flanges & Valves, and 60mm Tube - OTF-1700X-UL

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OTF-1700X-UL is UL/TUV standard split-able alumina tube furnaces with MoSi2 Heating Elements. The furnace can accommodate 60mm O.D high-quality alumina tubes along with a pair of smart stainless steel vacuum sealing flanges that features needle valves and vacuum gauge. Such configuration allows sample heat treatment under vacuum or flowing gas conditions up to 1700°C. The precise temperature controller can provide 30 segments of heating and cool with +/- 1°C accuracy.   SPECIFICATIONS
 Alumina Tube
 Alumina Tubes
Furnace Structure
  • The splittable design provides easy access to the tube replacement
  • Double-layer steel casing with air cooling to ensure a low surface temperature < 60°C
  • High purity fibrous alumina insulation for Max. energy saving
  • The special refractory coating on the furnace liner and heating element to increase furnace life
  • Two sets of fibrous ceramic tube blocks are included for blocking heat radiation from inside the tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating)  
Input Voltage
 208 - 240VAC SINGLE PHASE, 50/60Hz
 7 KW (40A Breaker)
Heating Temperatures
  • Max. heating temperature: 1700°C, < 10 minutes (N2 or other inert gas must be filled inside the tube to resist deformation)
  • Continuously working temperature: 1500°C (1600°C < 1hr)
  • Heating rate: 10°C /min Max.
Heating Zone
  • Total heating zone length: 400mm
  • Constant temperature zone: 140mm (+/-1°C)
Heating Elements
  • 16 pcs MoSi2 1800 grade Heating Element
Temperature Controller

Temperature controller interface

The optional PC control module
Standard temperature controller:
  • Proportional–integral–derivative control (PID control) and auto-tune function
  • 30 segments programmed with ramping, cooling and dwelling steps
  • Built-in over-temperature alarm and thermocouple failure alarm
  • +/- 1 ºC temperature control accuracy
  • Default DB9 PC communication port (PC control module and software are sold separately. 
  • MTS-02 PC control module (also including cable and software) is an add-on option for PC control
    • It is recommended to purchase the module together with the furnace. We install and test it before shipping
    • It is recommended to purchase the laptop (with software pre-installed) from us to avoid software confliction
    • Please note the module is not sold solely in the future
  • Eurotherm 3000 Temperature Controller is optional for an additional $950 including installation and testing. This package also includes the communication cable (RS485 - USB) and software CD. Click here to view the full spec
Vacuum Sealing
  • Two stainless steel flanges with vacuum gauge and valves. 1/4" pipe and KF25 adapters are installed in two ends respectively.
  • For a fast & better vacuum, suggest you use stainless steel pipe ( click to order at extra cost ), as well as digital vacuum gauge. 
  • Two pairs of fibrous ceramic tube blocks are included for blocking heat radiation from the inside tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating)
Vacuum Levels
  • 10^-2 torr by the mechanical vacuum pump.
  • 10^-5 torr by turbopump.
  • Leak rate < 5 mtorr / min.
 The vacuum pump is not included, please order separately at the related products section
Power Cable & Plug
  • 10 feet length 10-3 AWG heavy duty UL approved power cable is included. Extra length cable can be ordered by click picture below-left
  • The plug is not included. Pls, click compatible plugs to order or obtain one from a local hardware store. 
Product Dimensions       1000 L × 610 W × 750 H, mm
Net Weight 150 Kg
Shipping Dimensions 50 x 30 x 35 inch
Shipping Weight 450 lbs
Warranty One year limited manufacturer's warranty (consumable parts such as processing tubes, O-rings and heating elements are not covered by the warranty, please order replacements at related products below).
  • CE Certified
  • NRTL (UL61010) or CSA certification is available upon request at an extra cost
  •                   (click mark to learn details)
Application Notes

Click here to learn more about the installation of a gas regulator
  • NEVER open the furnace lid at temperature >100°C, doing so may thermal shock the processing tube and cause cracks. 
  • The tube furnaces with alumina tube are designed for use under vacuum and low pressure < 0.02 MPa
  • Never use graphite crucible in the alumina tube.
  • Attention: A two-stage pressure regulator must be installed on gas cylinder to limit the-the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator. 
  • Never heat the furnace while the gas release valve is closed and a positive pressure condition exists within the furnace chamber. The pressure gauge must be used to closely monitor the chamber condition at all times during the heating process; please open the gas release valve immediately once the chamber pressure has reached over 3 PSI to prevent unforeseeable damages.
  • .The flow rate for gases should be limited to < 200 SCCM ( or 200ml/min )
  • Vacuum pressure only is safely used up to 1500°C for alumina tube
Operation Instructions  ( Heating elements installation )     

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