Large Chamber 1700°C Box Furnaces are designed for efficient, high temperature use with minimal maintenance.
Moldatherm graduated density insulation adds to safety and performance by forming enhanced insulation protection between the high temperature chamber and exterior cabinet surface. Unique right angle heating elements and an integrated control system (a choice of single setpoint or programmable control) combine to deliver safe, dependable operation.

FEATURES

Available in two popular chamber sizes (see chart) Energy efficient double shell design for better uniformity, lower external cabinet temperature Moldathermâ high temperature ceramic fiber insulation with advanced graded design for fast heat-up and resistance to thermal shock Side swing door provides full and easy access to chamber, protects user from heat surge Removable panels for easy access to replaceable heating elements and thermocouples Atmosphere port, .375" diameter, for fresh air or inert gas inlet (located at back wall, bottom) Moldathermâ hearthplate supports load and protects chamber from damage due to spillage High volume cooling fans move air between inner and outer chamber to lower exterior shell temperatures and improve energy efficiency Solid-state power module with ammeter, circuit breaker, transformer and front panel indicator lights for "Open Element", "Fuse" and "Main Power Applied" Long-life type "B" thermocouples for accurate high temperature measurement Safety power disconnect switch cuts power to heating elements when door is opened RS-485 communications port available as an option

SMART HEATING ELEMENTS

Molybdenum disilicide elements with unique right angle bend and sidewall mounting to reduce maintenance associated with element termination and mounting Energy efficient, fast heat-up and response Increased resistance to thermal shock, ideal for rapid cycling over extended periods Designed for easy replacement without matching resistance values

SPECIFICATIONS
Model	Integrated Digital Control	Electrical, 1Ø	Watts	Int. (WxF-BxH)	Ext.. (WxF-BxH)	Ship Weight
Large chamber, temp. range 500 to 1700° For Overtemperature control specify option B ordering
Capacity 0.6 cu.ft. (17 liters)
BF51634C	Digital/1 Setpoint	208/240V, 50/60Hz	5900	11x10.5x9 in. 27.9x26.7x22.8cm	28x24x31 in. 71.1x61x78.7cm	350lbs (159kg)
BF51634PC	300 Seg/30 Prog	208/240V, 50/60Hz	5900	11x10.5x9 in. 27.9x26.7x22.8cm	28x24x31 in. 71.1x61x78.7cm	350lbs (159kg)
BF51634PCOMC	300 Seg/30Prog/Com	208/240V, 50/60Hz	5900	11x10.5x9 in. 27.9x26.7x22.8cm	28x24x31 in. 71.1x61x78.7cm	350lbs (159kg)
Capacity 0.9 Cu.Ft. (25.5 liters)
BF51664C	Digital/1 Setpoint	208/240V, 50/60Hz	7100	11x10.5x9 in. 27.9x26.7x22.8cm	28x24x31 in. 71.1x61x78.7cm	370lbs (168kg)
BF51664PC	300 Seg/30 Prog	208/240V, 50/60Hz	7100	11x10.5x9 in. 27.9x26.7x22.8cm	28x24x31 in. 71.1x61x78.7cm	370lbs (168kg)
BF51664PCOMC	300 Seg/30Prog/Com	208/240V, 50/60Hz	7100	11x10.5x9 in. 27.9x26.7x22.8cm	28x24x31 in. 71.1x61x78.7cm	370lbs (168kg)

Note: Power cord or hard wiring supplied by customer. Contact us for CE Models

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

CONTROLLERS

Digital, Single Setpoint Controller

Microprocessor-based PID control (proportional, integral, derivative) prevents overshoot Single segment, single setpoint, 1 ramp to setpoint Adjustable high limit overtemperature protection Simultaneous LED display of actual temperature vs. setpoint May be configured to display temperature in either °C or °F

Option P Digital Multiple Program Controller

Microprocessor-based PID control (proportional, integral, derivative) prevents overshoot 300 segments, up to 30 programs with 99 segments each for ramps (up and down) and dwells (timed holds) Simultaneous LED display of actual temperature vs. setpoint May be configured to display temperature in either °C or °F

Programmable Control with Communications

Available on "COM" Models RS485 port allows modification and interrogation of all instrument control and configuration parameters from remote computer (software not includedavailable as option) Includes installed communications card and port for user connection

Option B Overtemperature Control (OTC)

Adjustable digital overtemperature control, available on selected models 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 magnetic contacts through signal from independent thermocouple Factory installed, specify when ordering