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Techne Precision Fluidised Sand Baths
These products are now obsolete. Please see SBS-4 and SBL-2D for the current models.
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
Pioneers in the development of fluidised bath technology, Techne now
has a range of products capable of covering the temperature range
-100degC to 1100degC.
The fluidised bath is 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 take on 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 run a test.
Fluidised solids have no melting or boiling point. Therefore, solidification
which takes place in cooling salt baths and fumes from hot oil baths are
eliminated. Fluidised solids are dry and relatively inert, making the
medium safe and clean compared to conventional liquid systems.
Techne fluidised baths for laboratory and instrument shop use provide rapid
heat transfer and precise temperature control, enabling you to calibrate
and maintain temperature sensitive instruments efficiently and safely.
The SBL range of Fluidised Baths have a working
temperature span of 50degC to 600degC and offer a working
environment that is dry, easily accessible and totally free
from the dangers associated with high temperature oil
or salt baths.
The units are designed to be bench standing and only require an
electrical and air supply for operation. Air passes through the mass
of the (AL2O3) particles via a porous plate in the base of the unit
separating the individual particles and suspending them in free air,
giving the properties of a liquid bath. Heaters are placed in the bath
which allow temperatures of up to 600degC to be maintained. All the
SBL range units have a stainless steel inner container insulated from
the outer wall and a safety air pressure switch in the event of loss
A range of accessories are available for use with the SBL baths. The baths are controllable
to within +/-1degC and are suitable as a general purpose high temperature
environment ideally suited for comparison calibration, metal treatment,
distillation and other high temperature work. All units are supplied
with an initial charge of fluidising medium.
For a larger view, please click on the photo above.
With a temperature range of up
to 350degC this unit covers a wide
range of uses. Simple to operate
and maintenance free the SBL-1
Fluidised Bath when fitted with
TC-8D temperature control unit
temperature to within +/-1degC.
SBL-1 has a working volume of
228mm diameter and 120mm
deep. The unit is fitted as
standard with an energy regulator.
For temperatures up to 600degC the SBL-2
Fluidised Bath will maintain temperature to
within +/-1degC when used with the TC-8D. The
working volume of the unit is 228mm
diameter and 140mm deep.
heaters give a heat up time from ambient to
600degC of approximately 100 minutes. All the
SBL range of units have a pocket in the
fluidised bath that will accept a 5mm
diameter control thermocouple.
This extra depth fluidised bath is based on
the SBL-2 but with a working depth of
350mm. Four 1kW heaters give a heat up
time from ambient to 600degC of approximately
Designed to improve the temperature stability
and temperature setting obtainable with the
energy regulator supplied as standard with
the SB series of fluidised baths.
The TC-8D is a self contained unit and is
supplied complete with a chromel/alumel
Type K thermocouple which fits into the
sheath supplied with the SBL baths.
The unit has digital set point and readout of
bath temperature on an LED display and
incorporates PID control.
Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.
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