High Temperature, Top or Bottom Loading, Independent Control
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 recovery, and energy conserving performance.
Features - 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 resist thermal shock, withstand rapid cycling over extended periods
- Individual elements easily replaceable without matching resistance values
- Elements mounted on four sides of chamber for fast response and recovery
- Forced-air blowers circulate ambient air throughout the double-wall crucible cabinet to minimize exterior surface temperature
- Long-life Type "B" thermocouple for accurate high temperature measurement. Includes 10' compensated lead wire with polarized plug
- Requires independent controller （ordered separay）
Optional 1700°C Controller, Programmable, With Communications - Lindberg/Blue M 1700°C Programmable Controllers provide multiple programs and multiple segments for ramp （up and down） and dwell （timed hold） temperature control. The 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 which, when exceeded, holds the program to allow the process to catch up.
- The controller includes a selectable self-tuning feature which sets the best PID settings for the thermal process. Two digital displays simultaneously indicate actual temperature and setpoint temperature. High limit overtemperature protection is standard. The control console includes a circuit breaker, power module, transformer and cooling fans.
- Controllers include RS485 data port （communications card and port） for connection to remote computer, allowing modification, interrogation and data transfer of all instrument control and configuration parameter. Up to 30 units can be connected to one PC. Software is not included, but is available as an option.
Optional Overtemperature Control （OTC） - Adjustable digital overtemperature control, factory installed on selected control consoles with "B" suffix designation. Protects furnace and load in the event of primary control circuit failure. Overrides main controller, and shuts off power to furnace if high limit is reached. Manual re-set required for safety. Operates via signal from independent thermocouple.
Processing Options - In addition to air processing, the 1700°C crucible furnace can be used for atmosphere processing using an inverted ceramic crucible （included） 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.
- For use in a vertical tube configuration, either air or controlled atmosphere processing, the furnace requires an optional Adaptation Kit （see Accessories） ordered to match the size of the desired process tube （customer supplied）.
Notes - Required Accessories: Required power cord, hardwiring and interconnecting wiring are not included
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