Tube Furnaces
   

LTF Tube Furnaces 1200°C
This range of furnaces has a maximum operating temperature of 1200°C. Heating is provided by a resistance wire element wound on to the ceramic work tube, which is an integral part of the furnace. Low thermal mass insulation is used throughout for rapid response rates and maximum thermal efficiency and stability.

A rugged metal sheathed thermocouple is protected from accidental damage and allows for full use of the work tube bore. If the tube is for use with an atmosphere, or is likely to be contaminated by spillage, a separate work tube is required.

Horizontal models are supplied with the controls in the base, whilst vertical versions have a separate console. Other lengths can be made to special order.

LTF Tube Furnaces 1400°C, 1500°C and 1600°C
Heating is provided by silicon carbide rod elements which are mounted parallel to the work tube (the work tube must be ordered separately). The elements radiate heat directly onto the tube for rapid response rates.

Low thermal mass insulation is used throughout for maximum thermal efficiency and stability. Horizontal models are supplied with the controls in the base, whilst vertical versions have a separate console.

LTF Tube Furnaces 1700°C 1800°C
The LTF 17 and LTF 18 furnaces have maximum operating temperatures of 1700°C and 1800°C and are constructed using high grade insulation materials throughout for rapid response rates and maximum thermal efficiency and stability. Heating is provided by vertically suspended molybdenum disilicide elements.

The LTF 175 model has a maximum operating temperature 1750°C and is available in vertical format only. Heating is via elements which are mounted parallel to the tube axis. The main constituent of the elements is lanthanum chromite, with other inclusions being added to provide them with their unique properties. Lanthanum chromite is naturally inert and does not form a crystalline layer on the element when operated in air or pure oxygen. These elements exhibit little or no ageing and their electrical characteristics remain constant throughout their life. In the LTF multi-element furnace, the replacement of a single element does not affect the behaviour.

CSC Split Tube Furnaces 1200°C and 1700°C
These furnaces are ideal for processes requiring in-line heating for when rapid heating/cooling is essential.

Model CSC12 has a maximum operating temperature of 1200°C and is heated by spiral wire coils embedded in ceramic fibre. Other heated lengths available on request.

Model CSC17 has a maximum operating temperature of 1700°C and is heated by molybdenum disilicide elements. This is available as vertical model only. An outer mesh guard on all models allows natural air cooling for maximum operator safety and comfort.

PTF Three Zone Tube Furnaces 1200°C, 1500°C and 1600°C
These units have a maximum operating temperature of 1200°C, 1500°C and 1600°C. For units at 1200°C, heating is via an integral resistance wire element wound on to the ceramic work tube which is an integral part of the furnace. At 1500°C and 1600°C, silicon carbide rod elements are mounted parallel to the tube.

The end zone controllers are coupled to a centre zone thermocouple enabling the centre zone temperatures to be closely linked. This system provides a longer uniform zone temperature than that achieved by the use of single zone furnace of the same length.

Temperature variation within the uniform zone is typically +5°C, with a significant proportion of the uniform zone length within +1°C. To improve the uniform zone length within a tube furnace, it is necessary to use multi-zone furnaces; the usual configuration is 3 zones. Temperature uniformity will depend on the tube diameter and heated length.

VTF Vacuum Tube Furnaces 1200°C and 1500°C
This range of laboratory scale vacuum furnaces is designed to provide high specification products economically. The VTF series of horizontal tube furnaces is based on a standard design and is offered at 1200°C and 1500°C.

Standard features:

  • Vacuum vessel - ceramic tube fitted with SS end seals
  • Rotary pump - two stage sliding vane type
  • Water cooled oil diffusion pump
  • Manually operated backing/roughing and baffle valve
  • Pirani gauge - low vacuum monitoring
  • Penning gauge - high vacuum monitoring
  • Ultimate vacuum - better than 1 x 10-5mbar, with clean empty work tube

Options:

  • Gas inlet with additional safety system for use with combustible atmospheres
  • Flowmeters and valves for control of gas throughput Three zone control
  • Semi-automatic or fully automatic vacuum/heating cycles
  • Vertical operation

 
 
Catalogue