Model CFC56724C
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1700°C Crucible Furnaces

The Model CF56724C Crucible Furnace is used for high temperature research under three methods of processing: air, controlled atmosphere, or vertical tube orientation using an interchangeable vestibule as an insulating sleeve (which requires a vertical tube adaptation kit). Graduated density Moldatherm® insulation combined with a unique right-angle bend heating element, sidewall mounted, delivers excellent chamber uniformity, fast heat-up and recover, and energy conserving performance.

Features / Benefits

• Chamber is accessed by top or bottom with manually operated lifting mechanism; work load may be raised and lowered with convenience and safety
• Long-life molybdenum disilicide heating elements
• Individual elements easily replaceable without matching resistance values
• Elements mounted on four sides of chamber
• Forced-air blowers circulate ambient air throughout the double-wall crucible cabinet
• Long-life Type "B" thermocouples
• Dual access chamber permits top or bottom loading. Processing can be done in air or in a protective inert atmosphere when bottom loaded
• Crucible furnace chamber is not atmosphere tight
• Controller visually displays ramp rate, dwell time, program segment and percent power output
• A holdback feature allows the operator to set a "process vs. setpoint" temperature value that, when exceeded, holds the program to allow the process to catch up.
• Includes an advanced self-tuning feature that automatically sets the PID settings for the thermal process.
• Two digital displays simultaneously indicate actual temperature and setpoint temperature.
• High limit overtemperature protection is standard
• Includes a circuit breaker, power module, transformer, and cooling fans
• RS232 data port (communications card and port) for connection to remote computer
• Programmable PID based control Œ four 16-segment programs
• Molybdenum heating elements resist thermal shock, withstand rapid cycling over extended periods
• Fast response and recovery
• Minimize exterior surface temperature
• Accurate high temperature measurement

Options

• Computer communications software
• Overtemperature Control (Option B) (OTC)
• Adjustable digital overtemperature control
• Protects furnace and load in the event of primary control circuit failure
• Overrides main controller, assumes temperature control and shuts off power to furnace if high limit is reached
• Manual reset for safety
• Operates via signal from independent thermocouple
• Processing options
• Can be used for atmosphere processing using an inverted ceramic crucible over the load forming a muffle
• Inert gas is supplied through inlet and outlet tubes (customer supplied)
• Gas flow is controlled via an adjustable N² flowmeter, included
• Vertical tube adapter kit
• Creates a 1700°C tube furnace with air or inert atmosphere control using the Model CF56724C crucible furnace as the heating source
• Each kit is selected based on intended process tube size. Includes:
• 2 tube vestibules
• 2 tube insulating sleeves
• Cover plate and outlet plugs