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	FURNACES		CRUCIBLE FURNACES

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1700°C CRUCIBLE FURNACE, TOP OR BOTTOM LOADING

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.

General Features
Requires independent controller (ordered separately, see chart)
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

Note: This crucible furnace chamber is not atmosphere tight.

1700° Crucible Furnaces, Independent Control,
Temperature Range 500°C to 1700°C, 5,000 Watts

Model	Volts, Hz	Controller	Vestibule Top Opening ID in"	Vestibule Bottom Opening ID in"	Working Depth ID in"	Exterior Dimen. H x F-B x W in"	Ship Weight lbs
CF56724C	208/240V, 50/60 Hz	CC59256PCOMC	6.5"	5"	6.5"	35.5" x 20" x 19.5"	250

CONTROLLERS

1700°C Programmable Controller With Communications
Lindberg/Blue M 1700°C Programmable Controller provides 300 programmable segments for a variety of ramp (up and down) and dwell (timed holds) settings. Controller will accept up to 30 individual programs with up to 99 segments per program. 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. set point" temperature value which, when exceeded, holds the program to allow the process to catch up.

The controller includes an advanced self-tuning feature which automatically sets the best PID settings for the thermal process. Two digital displays simultaneously indicate actual temperature and set point temperature. High limit over temperature 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. Please see page 35 for additional options and information.

Option B Over Temperature Control (OTC)
Adjustable digital over temperature control, factory installed on selected control consoles with "B" designation; see chart. 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 re-set required for safety. Operates via signal from independent thermocouple.

Model	Digital	With Programmer	With Overtemp Control	Volts, Hz	Exterior Dimen. H x F-B x W in"	Ship Weight lbs
CC59256PCOMC				208/240V, 50/60 Hz	10" x 15" x 21"	130
CC59256PBCOMC				208/240V, 50/60 Hz	10" x 15" x 21"	130

Heat-Up/Cool-Down Rates

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Model CF56724C Heat-Up/Cool-Down

Actual performance may vary depending on load, chamber size, sample placement, ambient temperature and environmental conditions.

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