Tube Furnaces

Benefits

• Energy efficient design
• Easy operation
• Fast cooling
• Rapid heat-up and response
• Superior radial and linear temperature uniformity 
• Variety of furnace sizes
  

Features

• Single-zone models

  • Solid design incorporates double-end silicon carbide heating elements
  • Chamber constructed of high-temperature graded insulation
    
  • Insulating vestibules at the ends of the heated chamber
    
  • Long-life, fast response type "R" thermocouples attached to six feet of compensated thermocouple lead wire with a polarized plug 
  • Cross chamber element positioning compensates for heat loss from the ends of the process tube and improves system performance

• Three-zone models

  • Three independent power circuits (zones) with independent thermocouples for control reference
    
  • Temperature profiling: End zone setpoint temperature can be raised to compensate for heat losses and increase the length of the uniform temperature zone in the center of the furnace. To produce a pronounced controlled temperature gradient, one end zone can be operated at a lower temperature than the center zone, while the other end zone is run at a higher temperature. The setpoint temperature of each furnace zone is adjustable over a 0-1200°C range.
  • Uniform center zone temperature profile
  • Produces a pronounced controlled gradient

Performance

• Temperature

  • 1500°C (2732°F) Maximum

• Chamber Sizes

  • 12" heated length bored for 2" OD process tube - 36" heated length bored for 7" OD process tube.

Controller

• Available controllers: Models 58125 and 58155
  Versatile control accuracy

Options

• Computer communications port
• Software
• Inert and combustible atmosphere admission systems
• All standard 1500°C single and three zone tube furnace models are designed for horizontal operation. Furnaces specifically designed for vertical mounting are available on special order.

Option P Programmable Controller

• This controller offers the convenient flexibility of ramping to multiple setpoint levels and holding these levels for variable periods of time. The temperature controller provides 16 programmable segments consisting of ramps (up or down) or dwells (timed holds).

Option P4

• This controller offers the convenient flexibility of ramping to multiple setpoint levels and holding these levels for variable periods of time. The temperature controller provides four 16 programmable segments consisting of ramps (up or down) or dwells (timed holds).
• Option B Overtemperature Control (OTC)
• Protection of both furnace and load in the event of primary control circuit failure. Completely redundant circuit includes separate analog setting instrument with manual reset pushbutton, magnetic contactor and independent thermocouple.

Digital communication kits

• These kits allow modification and interrogation of all instrument control and configuration parameters from a remote computer. Kits are available to interface with RS-2323 or RS-422/485 communications ports.

Retorts

• Single-end and double-end cylindrical retorts are available for use with all 1500°C tube furnaces when atmosphere processing is required. (Maximum temperature when using retort: 1090°C.)