Series 15 High Temperature Vacuum or Controlled Atmosphere Refactory Metal Heat Zone Furnace

55 Northeastern Blvd,

Nashua, NH 03062

sales@centorr.com

Ph: 603-595-7233

Toll free: 800-962-8631

Fax: 603-595-9220

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Series 15
High Temperature Vacuum or Controlled Atmosphere Refactory Metal Heat Zone Furnace

Brazing
Crystal Growth
Degassing
Ceramic Firing

Heat Treating
Melting
Sintering
Thermocouple Calibration

Features

Low initial cost
Efficient, inexpensive to use
Uncomplicated design, easy to operate
Clean, compact, vacuum tight construction
Use in vacuum, inert, or reducing atmospheres
Low thermal mass - rapid heating and cooling
Accurate and uniform temperature control

The Centorr Series 15 High Temperature Vacuum or Controlled Atmosphere, Top Loading, Cold Wall, Refractory Metal, Laboratory Furnaces are simple and easy to operate.

A furnace system typically consists of the Basic Furnace Chamber Assembly, the High Vacuum System or Evacuation System, the Process Gas System, the Power Supply, the Temperature Control Instrumentation, and the Furnace Mounting System.

These furnaces are built having Heat Zone sizes of 2" Dia. x 2" High to 5" Dia. x 16" High, and capable of operating 2500°C. It is possible to operate in High Vacuum, in Inert Gas, in Reducing or in Oxidizing Atmospheres. The Vacuum System is capable of attaining 10^-6 Torr. The Furnace Chamber may be backfilled to 2 PSIG.

The Furnace is mounted on an open frame with the Vacuum System immediately behind (or to one side) for maximum efficiency. The Power Supply and Control Console are also located as close as possible to the Furnace Chamber. (In the case of small systems the power supply is housed inside the control console.)

The unit is ready to operate as soon as power is connected to the main circuit breaker, and water inlet and drain connections are made.

The Furnace is completely assembled and thoroughly tested prior to shipping; a copy of test results will accompany shipment.

Heat Zone Size	2" Dia. x 2" to 8" High, single phase 3" Dia. x 4" to 12" High, single or three phase 4" Dia. x 5" to 18" High, single or three phase 5" Dia. x 6" to 18" High, single or three phase
Temperature	Up to 1000°C 1650°C 2000°C 2500°C
Pressure Vacuum	2 PSI to 10^-6 Torr

Basic Furnace Chamber Assembly
The basic furnace consists of a double wall all stainless steel, water jacketed chamber containing the heat zone. The heat zone is resistance heated. The heating element is made of refractory metal. The heat shields are also all metal. Heat zone components are easily accessible for inspection or maintenance. A hearth is provided for work support.

The entire inside of the furnace chamber is designed to conform to the best high vacuum practice. Particular attention is given to the choice of heat zone materials and to surface finishes. Ports are provided for sighting, thermocouples, evacuation, inert gas inlet and exit, gauges, etc. Centorr's proprietary rotatable sight window is included as standard equipment.

Loading is done through the top Access Lid. Clamps are provided for operation to slightly above ambient pressure.

High Vacuum System
Standard high vacuum systems consist of high vacuum elbow, diffusion pump with cold trap, mechanical pump, manual, semi-automatic, or full automatic valve system, all copper manifold, Viton "O" rings, and combination ion gauge & two station thermocouple gauge vacuum instrument.

Evacuation System
For operation in the 10-50 Microns range of vacuum or for evacuation prior to backfilling with Inert Gas or Nitrogen, we include an Evacuation System. This includes a Mechanical Vacuum Pump, Vacuum Valve, and Manifold. Line Filter ahead of the vacuum pump, and Thermocouple type Vacuum Instrument are optionally available.

Process Gas System
Process Gas System consists of Vacuum tight Gas Inlet Valve and Relief Valve, Bourdon type Pressure-Vacuum Gauge and Manifold.

Power Supply System
Power Supply Systems consist of Silicon Controlled Rectifier Power Controller (Saturable Core Reactors also available) with Current Limit, Stepdown Transformer, Circuit Breaker, Contactor, Control Transformer, Ammeter, Voltmeter, Push Buttons, Indicator Lights, Water Interlocks, all completely wired and packaged in an attractive floor standing cabinet.

Utility requirements are given in KVA at customer's Primary Voltage, Single or Three Phase, and 50 to 60 Hertz.

Temperature Control Instrumentation
Centorr can supply control circuitry ranging from the simplest Manual Power Control to the most sophisticated intelligent instrumentation. This can include Automatic closed loop control utilizing Thermocouples, Power Transducers, or Optical Pyrometers for sensing; and incorporating Indicators-Controllers, Recorders, and Programmers. Various types of Micro-Processor Programmers are now available and extremely popular.

Furnace Mounting Assembly
The furnace chamber is mounted on an open support frame. Legs are provided with Leveling Pads. It is also possible to lag the support frame to the floor.