Model BF51732BC

Versatile LGO Series Box Furnaces feature the latest technical advances in heating elements, insulation and temperature control, all integrated into a self-contained cabinet. The patented LGO® heating element (light gauge overbend) delivers maximum radiant heat energy to the process load. The LGO® element is imbedded within Lindberg/Blue M's exclusive Moldatherm® insulation, combined with unique double shell construction to provide optimum temperature uniformity, energy efficiency, fast response, quick heat-up and rapid cool-down.

General Features

• Patented LGO (light gauge overbend) heating elements with Moldatherm® insulation for efficient and economical transfer of heat to chamber, with low exterior temperatures
• Variable heat-up rate eliminates thermal shock to materials with quick heat-up and cool-down rates
• Choice of side hinge or vertical lift door; see specifications for model selection
• Air vent (1" dia., top) and air inlet (.375" dia., rear) for inert atmosphere exchange
• Self-tuning, digital instrumentation for precise temperature setpoint and display; automatically sets best control parameter values during operation
• Platinel II® thermocouple for long-term stability
• Main power on/off switch on control panel; control panel designed for easy maintenance access
• Safety door switch to interrupt power to heating element when door is opened; protects heating elements and minimizes exposure to end-user
• Removable shelves for versatility; 0.58 cu.ft. models include 1 two-part shelf, center position; 1.95 cu.ft. models have 3 shelf positions; 1 two-part shelf included standard
• Moldatherm® hearthplate supports load and prevents damage due to spillage
• RS-485 communications port available as an option

Digital, Single Setpoint Controller

• Microprocessor-based self-tuning PID control (proportional, integral, derivative) provides optimum thermal process, 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

Digital Single Program, Multiple Segment, Programmable Controller

• Microprocessor-based self-tuning PID control (proportional, integral, derivative) provides optimum thermal process, prevents overshoot
• Single program with multiple segments for ramp (up and down) and dwell (timed hold) temperature control.
• Adjustable high limit overtemperature protection
• Simultaneous LED display of actual temperature vs. setpoint
• May be configured to display temperature in either °C or °F

Digital Multiple Program, Multiple Segment Programmable Controller

• Available on models with “P” designation
• Microprocessor-based self-tuning PID control (proportional, integral, derivative) provides optimum thermal process, prevents overshoot
• Multiple programs and segments for ramp (up and down) and dwell (timed hold) temperature control.
• Adjustable high limit overtemperature protection
• Simultaneous LED display of actual temperature vs. setpoint
• May be configured to display temperature in either °C or °F

Overtemperature Control (OTC)

• Adjustable digital overtemperature control, available on selected models with "B" designation
• 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

Optional RS485 Digital Communications Port

• RS485 Digital communications port available as an option. Allows controller to be connected to a PC for remote monitoring and control of the furnace. Up to 30 units can be connected to one PC.

Flowmeter Option (FM) (Inert Atmosphere Only)

• Available on selected models with ÒFM" designation
• Gas flowmeter, adjustable, located on front control panel
• Adjustable flow rate, range 1.0 to 10.0 cu.ft./hr standard
• Suitable for inert gas or air flow to chamber
• Allows fresh air exchange for ashing applications
• Not suitable for combustible or volatile gases