Split Tube Furnace with Hinged Type Vacuum Flanges & 4" Quartz Tube - OTF-1200X-4-HNG-UL

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Product Number: OTF-1200X-4-HNG


OTF-1200X series furnace are CE certified split-able Tube furnace with Fe-Cr-Al alloy heating element. The furnace is installed with 100mm O.D quartz tube 
with a pair of smart stainless steel vacuum sealing flange and valve / gauge which allow to heat sample under vacuum or flowing gas condition up to 1200°C.
Precision temperature controller provides 30 segments heating and cooling steps with +/- 1°C accuracy.   


Part No. OTF-1200X-4-HNG
Fused Quartz Tube Size O.D: 101 x I.D: 92 x Length: 1000 mm
Furnace Structure
  • Double layer steel casing with air cooling to keep furnace surface temperature lower than 60°C.  
  • High purity fibrous alumina insulation for maximum energy saving.
  • Special refractory coating on inner and heating element to increase furnace life.
  • Two Quartz tube blocks are included for blocking heat radiation from inside tube. ( blocks must be fully inserted into the furnace chamber before heating)
                   click here to choose a crucible
Input Voltage 208 - 240VAC SINGLE PHASE, 50/60Hz
Power 2.5KW
Heating Elements Fe-Cr-Al Alloy doped by Mo
Heating Temperature
  • Max. heating temperature: 1200°C <  1 hours  (N2 or other inert gas must be filled inside the tube to resist deformation)
  • Continuously heating temperature: 1100°C
  • Heating rate: 20°C /min Max.
Heating Zone Total heating zone length: 440mm
Constant temperature zone: 150mm (+/-1°C)
Temperature Controller
  • MET certified 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built in PID Auto-Tune function with overheating & broken thermocouple protection.
  • Over temperature protection and alarm allows for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • RS485 Communications Port.
  • Optional:  
    • The furnace may be operated by PC by installing a control module. Please order a MTS-02 control module at extra cost. 
    • The new version of PC module is now compatible with Lab View 05/08/2014
    • 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.
    • You may choose Eurotherm 3504 Programmable Temperature Controller to connect labview software at extra cost ( Click picture below right to see specs)


Hinged Type Vacuum Flange 
& Fitting
  • Two hinged type stainless steel flanges with needle valves. 1/4" pipe adapters are installed in two ends
  • Right flange has needle valve with 1/4" pipe connector.
  • Left flange has a needle valve, KF-25 Vacuum port and vac digital vacuum guage.
    1/4" feedthrough is included on the right flange
    Water cold hinged type flange is available upon request at extra cost
Vacuum Level
  • 10^-2 torr by mechanical vacuum pump.10^-5 torr by molecular pump. 
  • Leak rate < 5 mtorr / min.
Optional You may order vacuum pump and accessories to build a complete vacuum furnace system as the pictures below.


Product Dimensions Furnace: 590×380×520mm
Net Weight
Shipping Dimensions 45 x 45 x 35 inch
Shipping Weight 300lbs
Warranty One year limited warranty 
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
  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace is ready to pass TUV (UL61010)  or CSA certification at extra cost. ( please click marks below to learn details )
Application Notes
Click here to learn the installation of a gas regulator
  • The tube furnaces with quartz tube are designed for using under vacuum and low pressure < 0.2 bar / 3 psi / 0.02 MPa
  • Attention: A two stage pressure regulator must be installed on gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
  • Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C 
  • The flow rate for gases should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube




PREMIER SOLUTIONS PTE LTD / MTI CORPORATION - Split Tube Furnace with Hinged Type Vacuum Flanges & 4" Quartz Tube - OTF-1200X-4-HNG-UL

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