(+65) 6284 3818



Dual Heating Zone 1200C Compact Split Tube Furnace with Optional 1"- 2" Tube & Flange - OTF-1200X-S-II

0.0/5 rating (0 votes)



OTF-1200X-S-II is a UL certifiable compact two heating zone split tube furnace with a max. the working temperature of 1200°C. The furnace can adopt either a 1" or  2" O.D quartz tube (optional) with a pair of stainless steel vacuum sealing flanges. The 1/4" barb fitting for rubber hose connection allows heating samples in a vacuum or flowing gas. The furnace has two 4" L heating zone, which can provide a 100 mm long constant temperature zone or 200°C temperature gradient. Built-in two precision temperature controllers can provide up to 30 segments of heating and cooling steps with +/- 1°C accuracy.



Furnace Structure
  • Double-layer steel structure.
  • High purity Al2O3 fibrous insulation with Max. energy saving
  • High purity alumina coating on refractory ceramics for longer service life.
  • Two 4" length heating zone which can be controlled by temperature independently.
  • Dual Heating zone design and Alumina circle block help you build customized Temperature Gradient inside the tube.
  • All electric components (>24V) are UL certified and ready to pass TUV, CSA, and UL test
  • 110V AC, single phase, 50/60 Hz
  • 1.5 KW
Max. Temperature
1200°C (<1 hour)
Continuous Temperature
1100°C ( continuous)
Max. Heating Rate
≤ 20°C/min
Heating Zone Length
  • Two heating zone and each zone length is 100mm and 200 mm in total 
Constant Temp. Zone &
Temperature Gradient
  • 50mm  within +/-1°C ( If set two zones at the same temperature )
  • 70mm  within +/-2°C  ( If set two zones at the same temperature )
  • Max. temperature gradient :  1°C/ mm ( one zone heating )
  • Max. temp difference between the adjacent zones ~100°C (heat up one zone only, without the isolator between the adjacent zones)
Temperature Controller
  • Two temperature controllers are built to control the heating zone independently via K-type thermal couples
  • PID automatic control via solid-state relay with 30 steps programmable
  • Built in Over Temperature and Thermocouple Failure Protection
Temperature Accuracy
+/- 1°C
Heating Elements
Fe-Cr-Al Alloy doped by Mo
Tube Size Please select the tube size in the options bar, ( click below to order spare tube )
 1" quartz tube (25mm O.D x 22mm I.D x 450mm L)
Vacuum Flanges
  • 1" flange has no thermocouple insert ( click the bottom picture to see details )
  • 2"  and 2.36"(Option) tube flange (click the bottom picture to see details)
Vacuum Level
10-3torr (by mechanical pump)
Fitting Ports
Optional Parts
  • You may need a vacuum valve at the vacuum port( click picture left to order )
  • You may consider ordering quick connecting flange at extra cost.
  • You may click the pictures in below to order the furnace with a vacuum pump and a temperature calibration kit.
Pressure Measurement & Monitoring
  • Standard mechanical vacuum gauge measures within a pressure range of -0.1 to 0.15Mpa is included.
  • OPTIONAL: A gas-type independent (above 10mbar) digital vacuum gauge with a wide range between 3.8x10-5 to 1125 Torr. Aside from greater measurement precision, this gauge reduces risks of chamber explosions caused by the incorrect reading of gas pressures due to gas-type dependency.              
With lid closed: 340mm(L) × 300mm(W) × 400mm(H) 
With lid open: 340mm(L) × 300mm(W) × 560mm(H)
Net Weight
35 Kg
Shipping  Package  Size
40''(L) x 25''(W) x 35''(H)
Shipping Weight
110 lbs
One year limited warranty with lifetime support (Consumable parts such as processing tubes and o-rings are not covered by the warranty, please order replacements at related products below.) 
  • CE Certified
  • NRTL or CSA certification is available at extra cost. 
Application Notes & Warning
Operation Instructions

Share this product

Enquiry Form

Please type your full name.
Invalid email address.
Invalid Input
Invalid Input

Register for new product information:    

Please publish modules in offcanvas position.