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1400C Max. Bottom Loaded Inert Gas Atmosphere Box Furnace, (20x20x20", 125L) - KSL-1500X-GS125

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Item Number: KSL-1500X-GS125
Transported by LTL Freight (Truck)

KSL-1500X-GS125 is a bottom loading larger box furnace ( 125 Liter capacity) with inert gas atmosphere control up to 1400 ºC. The furnace consists of high-quality alumina fiber bricks and SiC heating elements with 20" x 20" x 20" heating chamber. A vacuum-sealed steel chamber with a water cooling jacket, as well as the vacuum & gas flow control system enables material processing under inert gas or oxygen atmosphere. 

Furnace Structure

  • Double-layer stainless steel structure for maximum  safety
  • The bottom loading mechanism by electric hydraulic lift , which can hold 200 Kg Max. sample
  • Water cooling front door and sealing jacket for max. service life.
  • Touch-screen digital control panel for all parameters.
  • Precision temperature control with +/- 3 ºC uniformity inside the chamber and +/-0.5°C accuracy.
Inside Chamber Size
  • Heated chamber: 500 x 500 x 500 mm ( ~ 20" x 25" x 25" . 125 Liter capacity )
  • Energy-saving 1800 grade fibrous alumina insulation.
  • High purity Al2O3 coating.


  • AC 220V,  three-phase; 50/60 Hz
  • 40 KW 
  • 50Amp ( 80Aair-breaker)

Heating Element

  • 12 Pcs  SiC heating elements                

Continuous Working Temperature

  • 1300°C

Maximum Working Temperature

  • 1400°C (< 1 hr)
  • Optional:  Max. 1700oC is available by using MoSi2 heating elements at the extra cost

Heating Rate

C / min

Temperature Accuracy

+/- 0.5 ºC


Two S type thermocouples (control thermocouple and secondary alarm thermocouple)

Temperature Control

  • Eurotherm controller with PID automatic control via SCR (Silicon Controlled Rectifier) 
  • 30 programmable segments for precise control of heating/cooling rate and dwell time.
  • Over-temperature protection and thermocouple failure alarm functions allow operation without attendant(s).
  • +/- 0.5 ºC temperature accuracy.
  • RS485 Communications Port 

Gas Flow Control and
Vacuum Valve
  • One flow meter ( 0~12L/min) is installed on the front panel of the furnace.
  • One heavy-duty vacuum pump (CE certified) is built on the bottom of the furnace.  

Net Weight

  • 3000 Kg


One year limited warranty with lifetime support. (Consumable parts such as sample plates and heating elements are not covered by the warranty, please order the replacement at related products below.)


  • CE Certified for the furnace, vacuum pump, and water chiller.
  • NRTL (UL61010)  or CSA certification  is available at extra cost.( please click mark below to learn details

Application Notes


  • ATTENTION: Any damages caused by the use of corrosive and acidic gasses are not under the coverage of MTI One Year Limited Warranty.
  • In order to prevent oxidation/corrosion damages to the Mo heating elements, it is necessary to keep a constant inert gas (Ar preferred) flow throughout the entire process. This is the most effective way to carry out any by-products.

Operation Instructions

Related Products

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