Graphite Hot Zone Laboratory Furnace
Лабораторные печи с графитовой горячей зоной имеют разные размеры рабочей зоны и допустимую температуру.Печи позволяют работать в вакууме или атмосфере инертного газа.
GRAPHITE HOT ZONE
Graphite Hot Zone Laboratory Furnace
Work Zone Temp Model
(inches) Rating (°C) Number
1 dia.x 6 2500 1000-1640
2 dia. x 6 2900 1000-2560-FP20
4 dia. x 6 2200 1000-4560-FP20
4 dia. x 6 2500 1000-4560-FP30
4 dia. x 12 2000 1000-45120-FP30
4 dia. x 18 2000 1000-45180-FP40
6 dia. x 8 2000 1000-6580-FP30
6 dia. x 8 2300 1000-6580-FP40
6 dia. x 8 2500 HTG-7010-25
8 dia. x 16 2300 HTG-9020-FP23
Type C thermocouple with a tungsten-coated molybdenum sheath. For use up to 2000°C.
Optical pyrometers are recommended for use at temperatures above the thermocouple range and are effective from room temperature to 3000°C with controlled atmosphere conditions.
AUTOMATIC TEMPERATURE CONTROL
Automatic temperature control may be achieved with a versatile, high stability, precision PID, set point programming controller. Different models with a variety of features are available. These features include self-tuning, multiple stored programs with multiple ramp/dwell segments, and event outputs. Digital serial communications via EIA 232/422/485 are available.
Recorders are available in single and multi-pen and single and multi-point models in several chart widths and speeds.
VACUUM PUMPING SYSTEMS
Mechanically, diffusion and turbo pumped vacuum systems with valved connections and vacuum gauge monitors are available for purging or vacuum atmosphere operation.
GAS CONTROL SYSTEMS
Inert gas controls, burn-off systems for combustible gases, and the Model GSS-99 hydrogen gas safety system are available for controlled atmosphere operation.
A hearth elevator is available to facilitate bottom furnace loading. An elevator attached to the furnace permits smooth raising and lowering of the furnace bottom door and work support hearth.
QUENCH AND COOLING CHAMBERS
Liquid quench and gas-cooling chambers are optionally available for use with all Group 1000 models.
Aluminum oxide muffle tube assemblies can be installed to permit working in air or oxidizing atmospheres at temperatures compatible with aluminum oxide (1800°C maximum).
This accessory is also useful with an atmosphere not compatible with graphite or when the work must be maintained in a very clean or wet reducing environment.
Graphite trays for each model size provide work support with the furnace in a horizontal position. The tray bolts to either end hearth and maintains axial view or instrumentation access through its attachment.
Any standard Model 1000 can be converted, changing the element ID, to any other model size at a later time by replacing the graphite interior and, depending upon the model, the end covers.
Many sizes of quick-connect probe feedthroughs are available to fit any furnace port for instrumentation. Windows can be added to any port for viewing the hot zone interior. Additional radial ports can be optionally added to the standard furnace.
· Thermal gradient heating elements
· Black body radiation cavity (for 2560 and 3060 models).
· Drop calorimeter
· Muffle tube accessories with large axial view access
· Other custom-designed accessories
Additional radial view ports including dual opposed windows for optical extensometer work and long, slot-shaped, through-view access.
Stainless steel and nickel-plated copper vessel construction for corrosive gas use including hydrogen fluoride and chlorine.
High-pressure construction to ASME standards for pressure vessels.
Special models are available with hot zone lengths to 36 inches (914mm). Larger diameter models with stainless steel shells are also available.