Power

• Voltage: Single-phase 208 - 240 VAC / 50/60Hz, (25 A breaker installed)
• 3 KW max. 
• Note: Power cable included but without the plug. Please install a plug by your own or click the link below the picture to choose a plug according to your country or your lab requirements

Working Temperature

• <1100°C under ambient pressure

• <1000°C under vacuum
• GE214 quartz tube is available for 1150oC working temperature at extra cost.

Heating Rate

• <20°C/ min
• Recommended: 10°C/ min

Heating Elements    

• Ni-Cr-Al resistance wire

Quartz Tube & Effective Heating    

• Tube size: Ø200×Ø190×H425 mm

• Max. loading 40Kg
• Heating area Ø240×H245 mm

• Stainless steel vacuum flange with dual high-temperature silicone O-rings with water cooling jacket
• One 1/4 gas inlet and one gas outlet with needle valves. 
• One bored Al2O3 foam refractory block (190Dia x 50mm) is provided
• K25 port is built-in for connecting to the vacuum pump
• Mechanical Vacuum Gauge (included as standard accessory), which ranges from -0.1 to 0.15Mpa

• A water-cooling jacket has been built inside the flange to protect the vacuum sealing assembly from melting at over 200°C.  16L/min water flow required.
  

• NRTL certified 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
• THE Default DB9 PC communication port included for connecting to PC
• Eurotherm Temperature Controller is available at the extra cost with +/-0.1°C accuracy

Options
   

• Digital Pressure Gauge (optional) A gas-type independent(above 10mbar) digital vacuum gauge with a wide range between 3.8 x 10^-5 to 1125 Torr. (Click Pic. 1 to order)
• You may choose a gas mixer to deliver multiple gasses with control over gas composition and flow rate (click pictures below to order separately).
• The furnace can be modified into a faster heating and cooling furnace ( Pic. 3)
  Pic. 1Pic. 2 Pic. 3

Vacuum Pressure

• Vacuum Level is dependent on the vacuum pump used, connected pipe, interior refractory block's materials, etc. By using KFD25, stainless steel pipe, MTI's two-stage mechanical pump, and KF25 Ball valve, the furnace can achieve vacuum levels below:
• 10^-2 torr via mechanical pump within 30 minutes without thermal Block
• 10^-5  torr via turbo-pump within 30 minutes with the Quartz Thermal Block at 900C
• Optional: 
• The vacuum pump and pipe are not included, please click Pic.1 to order
• For achieving a higher vacuum level, a Turbopump Station is necessary. (click Pic.2)
• Spare sealing O-ring is available at extra cost (click Pic.3)
•  KF25 Right-Angle Valve for quick connection to KF25 Bellows (click Pic.4)

       Pic. 1       Pic. 2   Pic. 3      Pic. 4

Options

Compliance
  

• CE Certified
• NRTL or CSA certification is available upon request at extra cost.

Warning  

Click here to learn the installation of a gas regulator

• Tube furnaces with quartz tubes are designed for use under vacuum and at low-pressure < 0.2 bars 
• Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation.
• A maximum temperature of 1000°C should be imposed on all quartz tube furnaces to avoid the quartz tubes undergoing deformations under vacuum.
• The flow rate for gasses should be limited to < 200 SCCM for reducing thermal shocks