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Heat
Distortion / Vicat Softening Point
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Product
Description |
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The apparatus has
been designed to evaluate the strength characteristics
of plastic polymers when the temperature is increased
at a set rate. Heat distortion determines the point on
a temperature ramp at which a test sample, subject to
a given bending stress, will deflect a predetermined amount.
Vicat determines the point on a temperature ramp at which
a loaded tip, having a precise area, will penetrate a
test sample by a predetermined amount. |
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Ray-Ran's well
proven advanced dedicated microprocessor technology used
throughout the Polytest range of test equipment has been
incorporated into the 6 Station Advanced HDT/Vicat Softening
Point Apparatus. The microprocessor integration has taken
measurement accuracy to new levels. |
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The Ray-Ran microprocessor
has been designed to provide the widest possible choice
of test parameters, extending far beyond those specified
by International test standards. Therefore, if the need
arose, companies could establish their own test parameters
for special cases that cannot be accommodated within the
scope of the International test standards. |
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The machine's operation
is ergonomically simple. Parameters and test results are
displayed in the large, easy to read liquid crystal display.
Data entry is via a simple touch membrane keypad. Test
procedures are self prompting direct from the microprocessor.
The built-in printer gives hard copy test results and
statistics. |
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Supplied as standard
is an RS232 output and a Windows based software program.
Both
tabular and graphical presentation of results are given.
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Two specific tests
can be performed in compliance with all International
test standards. |
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Heat Distortion Test
(HDT) |
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Determines the
temperature along a constantly increasing temperature
ramp at which a test sample, subjected to a given fiber
bending stress, deflects by a set vertical distance concurrent
with the applied force inducing the stress. |
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Vicat Test |
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Determines the
temperature along a constantly increasing temperature
ramp at which an
indent tip, having a defined projected area and subjected
to a given vertical force, penetrates into the surface
of a test sample by a set vertical distance. |
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Features
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The following features are supplied
as standard. |
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Advanced dedicated microprocessor
control
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Touch membrane keypad for
ergonomically simple data entry
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Easy to read liquid crystal
display
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Sequence logic menu auto
prompt selection |
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Built-in test results printer
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RS232 output with special
data transfer lead and Windows data link PC software
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Tabular and graphical statistical
analyses
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Data file capture |
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Digital temperature display
and control
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Auto prompts for test procedures,
calibration and test results |
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0.45, 1.80 and 8.00 mpa
fiber stress with option for non-standard fiber stress
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Deflection and penetration
measured by Mitutoyo transducers accurate to 0.001 mm
(0.0001 in) |
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Balanced spirolift station
raising system for easy access sample loading and unloading
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Integrated system for calibration
of temperature at sample |
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Built-in microprocessor
controlled bath cooling system upon completion of test
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Over temperature safety
protection device independent of microprocessor controller
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6 x HDT heads |
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6 x Vicat nibs |
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Calculation spreadsheet
for modular binary test weight system |
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Fully traceable certificate
of calibration |
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Product user manual |
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CE mark of conformity |
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Year 2000 compliant |
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1 year return to base warranty
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Technical
Specification |
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International Test Standards |
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The design, operation and calibration
of the apparatus conforms to all International test standards
for heat distortion and vicat testing, including the new
ISO test standard for flatwise HDT. |
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Test Weights
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For Vicat, 1 kg and 5 kg test
weights are available. For HDT, required test weights
are calculated by the microprocessor based on the sample
size and fiber stress selected. A modular binary test
weight system is available to encompass all samples sizes.
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Cooling |
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An integral cooling coil is
fitted inside the bath for rapid cooling by water. Cooling
is automatically operated by the microprocessor upon termination
of the test. |
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Heat Transfer Medium |
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IFor temperatures up to 200 C, Dow Corning
210H high shear silicone fluid is required. For higher
temp. Dow Corning 550 is suitable. When using temperatures
above 250 C a Nitrogen blanket is essential. |
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Temperature Ramp Rates |
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For both HDT and Vicat the choice
defaults to either 120 C/hour or 50 C/hour. A variable
option to cover non-standards is also given. |
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Fiber Stresses |
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For HDT the choice defaults
are 0.45 mpa, 1.80 mpa and 8.00 mpa. A fourth option for
non-standard fiber stresses is also available. |
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Span Support |
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For HDT testing span supports
are quickly adjustable from 100 mm to 64 mm. |
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HDT Deflection |
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The choice defaults to the standard
0.25 mm. A second option is available for non-standard
deflection. |
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Vicat Test Penetration |
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The choice defaults to 0.1 mm
(0.1 Vicat) and 1.00 mm (1.0 Vicat). A third option is
also available for non-standard deflection. |
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Spares
And Ancillaries |
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The following items may be purchased
together with the apparatus or at a later date as required. |
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Test Weights |
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Test weights are priced individually
per station at extra cost. If only one type of test is
required it will only be necessary to purchase one type
of test weights. |
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3800-20-00 : Set of 14 Modular
Binary Test Weights |
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A new system using a progression
of weights has now been incorporated for HDT. A set of
14 different test weights with 1 gram progression is available
which combine to give any load from 1 gram to 3119 grams.
Loads are easily calculated based on the test sample dimensions
and the fiber stress selected. |
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1700-06-07 : 1.000 kg Vicat
Test Weight |
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1700-06-08 : 5.000 kg Vicat
Test Weight |
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HDT Heads And Vicat Nibs |
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The machine is supplied with
6 x HDT heads and 6 x Vicat nibs included in the basic
cost of the apparatus. Spare heads and nibs are priced
individually per station. |
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1700-04-17 : HDT Head |
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1700-04-18 : Vicat Nib |
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Heat Transfer Medium |
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The heat transfer medium is
priced extra. The bath capacity of the 6 Station Advanced
HDT/Vicat Softening Point Apparatus is approximately 18
liters. Please refer to the technical specification section
for the required specifications for the heat transfer
medium. |
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1700-07-07 : 5 liters Silicone
Oil |
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Consumables For Built-in
Test Results Printer |
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308-213 : Pack 3 Printer
Ribbons |
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177-306 : Pack 10 Rolls
Printer Paper |
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Electrical
Characteristics |
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The product is available with
either of the following electrical characteristics. |
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220-240 volts 1 ph 50 Hz
(standard configuration) |
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100-120 volts 1 ph 60 Hz
(available on request) |
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Shipping
Characteristics |
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All Ray-Ran products are securely
packed in a strong durable wooden packing crate suitable
for export shipment to any country in the world by air,
land or sea. |
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95 kg / 100 cm x 65 cm x
50 cm |
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All weights and dimensions are
approximate.
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