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1250C Small Box Furnace (6" x 6" x 7", 4.2 liter) with Programmable Controller - KSL-1200X-J-UL

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  • High purity alumina fiber insulation surrounding the chamber provides maximum energy efficiency. 
  • Heavy-duty double-layer structure with a cooling fan to keep furnace exteriors safe to touch. 
  • Doble layer steel case with forced-air cooling to ensure lower safer face temperature.
  • One venting port is built on the top of the furnace
  • One air inlet is located at the back of the furnace.
Chamber Dimensions
  • 150mm(W) x 155mm(H) x 180mm(D), (6" x 6"x 7")
  • Capacity: 4.2 Liter or 0.44 cubic ft
Voltage:  208 -240V Single Phase 50/60 Hz
2.5KW (not suitable for running at 110V)
Note: Power cable included but without a plug. Please install a plug on your own or click the link below the picture to choose a plug according to your country or your lab requirement
Operating Temp Range
  • 1250°C  < 1 hour
  • 100-1200°C continuously
Stability at 1000 °C +/- 1.0 ° C
Uniformity at 1000 °C +/- 2.0 °C
Max. Heating Rate 30°C/ min.
Thermal Couples K types with Ceramic Sheath
Temperature Controller
  • The digital temperature controller is included.
  • 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
Temperature controller (optional)
Net Weight 62 lbs
Shipping Weight 115 lbs
Shipping Dimension 40"x30"x36"
Overall Dimensions      360mm(L) x 300mm(W) x 510mm(H)  
  • One year limited warranty with lifetime support.  
  • ATTENTION: Any damages caused by the use of corrosive and acidic gasses are not under the coverage of MTI One Year Limited Warranty.
  • CE Certified
  • NRTL (UL61010) or CSA certification is available upon request at extra cost.
Operation Video                        
Application Notes  
  • For the longer service life of the furnace, we recommend the heating rate not to exceed 10 °C /min.
  • The cooling rate should not exceed 10 °C /min either.
  • Small cracks may appear on the surface of the refractory ceramics over extended use. This is a normal occurrence and the cracks may be repaired with the alumina coating 
  • The heating module is easy to replace. Click pic left to order spare the Heating module for replacement
  • If firing material release vapor or smoking, please put the furnace into a fume hood as left 2 pictures. 

  • Toxic, corrosive or explosive gases are not allowed for use with this furnace. You may consider the furnace with a separated controller to use in a glovebox  or remote distance  (click Pic. 1 to order ) 
  • If you need to open a hole on the top of the furnace ( Pic. 2), please let us know.  
  • The furnace can be modified into a hybrid tube furnace (Pic. 3)
  • Pic. 1            Pic. 2     Pic. 3

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