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UL Standard 1700°C High Temperature Inert Gas Atmosphere Box Furnace, ( 8x8x8", 8L ) - KSL-1700X-GS

In stock
Item Number: KSL-1700X-GS
Transported by LTL Freight (Truck)


Computerized Tool

KSL-1700X-GS is a CE certified box furnace designed for materials synthesis under inert gas atmosphere with temperatures up to 1700 ºC. The furnace consists of high-quality alumina fiber bricks and Molybdenum alloy heating elements with an 8"x 8"x8" heating chamber. A vacuum-sealed steel chamber with water cooling jacket as well as the vacuum & gas flow control system enables material processing under inert gas atmosphere.

Furnace Structure
  • Double layer stainless steel structure for maximum vacuum and safety
  • Spring loaded pressure relief valve installed on the furnace provide protection against chamber over-pressurization.
  • Water cooling front door and air cooling shell.
  • Built in the vacuum pump and two-channel gas flowmeters, pressure gauge needle valves.
Inside Chamber Size 

  • Heated chamber: 200 x 200 x 200 mm (8x8x8 inch), 8 Liter.
  • Energy saving 1800 grade fibrous alumina insulation.
  • High purity Al2O3 coating.


7.5 KW


AC 208 - 240V single phase; 50/60 Hz


36 Amp (50 Amp air breaker is required)

Continuous Working Temperature


Maximum Working Temperature

1700°C (< 1 hr)

Heating Rate

C / min

Temperature Accuracy

+/- 1°C


two B type thermocouples (control thermocouple and secondard alarm thermocouple)

Temperature controller

Main Temperature Controller is used to set and run the 30-segment heating program and provides the 1-level temperature alarm protection. 
Secondary Temperature Controller reads the temperature from the secondary B type themoucple, monitors the temperature during all process and provides the 2-level temperature alarm protection.

Pressure Control 

  • The pressure sensor and pressure controller are installed. It reads the chamber pressure and controls the inlet and outlet gas valves respectively according the pressure limit settings.
  • The pressure control can be used to perform the following functions:
    • Purging
    • Pressure control
    • High and Low pressure protection
  • The pressure controllable range: -0.06 to 0.03Mpa. 

Heating Elements

  • 6 pcs Mo Alloy coils (can only be used under inert gas, Ar is preferred; cannot be used under air or oxygen at the temperature > 300°C).

Temperature Control

  • PID automatic control via SCR (Silicon Controlled Rectifier) power control with phase angle fired, current limiting resistor.
  • 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).
  • +/- 1ºC temperature accuracy.
  • RS485 Communications Port.
Temperature controller (optional)

  • MTS02-Y Temperature control software kit (for YD518P series controllers) + brand new laptop package is available at the options bar. Click for the detail information about the MTS02-Y software kit. 
  • You may upgrade the temperature controller to the Eurotherm Temperature Controller which is fully compatible with LabVIEW with +/- 0.1oC accuracy.   This package includes a Eurotherm programmer, a communication cable (RS485 - USB) and a software CD. Click the pic left to view the full spec of the Eurotherm temperature controller.  

Pressure Relief Valve

Spring Loaded Type Pressure Relief Valve
  • Cracking pressure is manufacturer pre-set at 0.066Mpa (relative pressure value).
  • Valve close pressure: 0.03Mpa (relative pressure value).
  • Max. Temperature 200ºC.
  • 35mm O.D barb fitting for gas exhaust.

Gas Flow Control and

Vacuum Valve
  • Two flow meters (#1: 0~8L/min; #2: 0~4L/min) are installed on the front panel of the furnace.
  • One heavy duty vacuum pump (CE certified) is built on the bottom of the furnace.  
  • Optional: You may order a (UL certified) pump at extra cost (Pls click the right picture below to see specs).
              ( CE certified )                ( TUV certified )
Water Cooling
  • A 16L/min recirculating water chiller is installed in bottom of furnace for cooling furnace sealing flange (CE certified only)
  • MET Certification (UL 1450) for water chiller is available upon request at extra cost, please contact our sales representatives for a quote. 

Net Weight


Shipping Weight

1200 Lbs.

Product Dimensions

Please click the picture on the left to view dimensions:

Shipping Dimensions

58" x 46" x 89"


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.
  • All electronic parts in the furnace are UL or MET Certified.
  • UL / MET / CSA Certification is available upon request, additional charges will apply.                      

Application Notes

  • For preserving the longevity of the furnace components, we recommend the heating rate not to exceed 5 °C /min.
  • The cooling rate shall also not exceed 5 °C /min. 
  • 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 alumina coating.
  • Please click here to learn how to DIY gas purging system.
  • The refractory block must be inserted before closing door.
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.


  • 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

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