Specifications

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precision temperature fluidised sand baths
Precision Temperature Fluidised Sand Baths
With more than 50 years experience in the field of temperature control, Techne has established
itself as a world leader in the design and manufacture of equipment used for both laboratory and
on-site temperature calibration, providing the calibration engineer with a precise dynamic stable
temperature source.
Exceptional temperature stability and uniformity also make Techne fluidised baths the ideal choice
for critical heat treatment procedures.
Pioneers in the development of fluidised bath technology, Techne have a wide range of products
capable of covering the temperature range –100°C to 1100°C.
The fluidised bath is constructed from a container filled with dry inert particles of aluminium
oxide. When a gas flow is passed through the particles via a porous distribution plate, the
particles are separated and suspended in the gas flow and give the appearance of a boiling liquid.
Apart from circulating and flowing like a liquid, fluidised particles exhibit excellent heat
transfer characteristics. When fluidised particles are heated, heat is distributed quickly and
evenly throughout the bath and transferred rapidly to objects submerged in the bath. The bath
temperature can be adjusted easily to the point at which you wish to calibrate or carry out a heat
treatment application.
Within the temperature range of the unit the aluminium oxide does not melt or reach boiling
point. Therefore, solidification which takes place in salt baths and fumes from hot oil baths are
eliminated.
Fluidised baths are dry and inert, making the medium a safe and clean alternative to conventional
liquid systems and salt baths.
Techne fluidised baths are used in materials and component quality control, instrument
calibration laboratories and thermal processing production departments. They provide rapid heat
transfer and precise temperature control to calibrate and maintain temperature sensitive
instruments efficiently and safely.
Applications include:-
Aerospace
● Jet engine sensors particularly irregularly shaped sensors which cannot be calibrated with
Dri-Block or liquid baths.
● Wiring looms from battery and engine sensors on transport aircraft.
Fuel cells systems
● Heat source for a heating coil used to generate superheated steam which is a safer alternative
to electric ovens and oil baths.
Engineering
● Heat treatment of metals used in stress analysis testing.
● Heating of reactor vessels containing plastics samples.
Mining
● Used to heat a reactor vessel with mineral samples when investigation oil and petroleum
generation.
Petrochemical
● Used to test heavy ship oil in reactor vessels.
Shape setting
● Used by leading manufacturers to shape- set nitinol stents and platinum/tungsten coils.
Overspill flange
Fluidised sand
Air-flow
regulator
Air inlet
Fail safe unit
Energy
regulator
Outer case
Inner container
Insulation
Heater
Porous plate