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The New REL KR140 Viscometer
For measuring viscosity in the Alternative Ranges of, 40KU
to 140KU, 35gms to 1150gms and 150 to 4000 centipoises.
This
viscometer is simple to use and its operation is based upon
the specification of ASTM D562.
With the
spindle rotating at 200rpm and a paddle conforming to the
ASTM D562 specification, the unit measures the power to
maintain the spindle at 200rpm when the paddle is immersed
in the sample.
A digital
display shows the reading, selected in either Kreb Units,
grams or centipoises.
This is an
ideal instrument for use in the measurement of Paints and
Coatings.
KR140 SPECIFICATION
(Viscosity
Range Choice of Three)
A.
Kreb Units
40 to 140
B.
Weight 35
to 1150grams
C.
Centipoises
150 to 4000
Spindle
speed 200rpm ±0.2rpm
Resolution O.1 KU
1.0 gram
1.0 centipoise
Accuracy ±
1.0% of full scale
Power 220v/50Hz
110v/60Hz
Power Consumption 20 watts
Weight 4.3 Kgms
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The ICI
Type Cone & Plate
Analogue Viscometer
Outstanding
Advantages Offered
1
Small sample
2 Speed of measurement
3 Wide temperature range
4 Thermostatic control
5 Ease of cleaning
The high
temperature
Viscometer has been designed for the control of the
viscosity of resins, bitumens, hot melts and similar
products, during manufacture.
These
Viscometers enable a very small sample from the cooking
vessel to be checked for viscosity in less than a minute.
The instrument is thermostatically controlled over a wide
range of temperatures, one of which is selected so that the
melt viscosity of the resin comes within the viscosity of
the instrument.
In this
way, thinning tests are eliminated and a quick and accurate
determination of resin viscosity is obtained.
Ease of
cleaning is ensured by virtue of the small sample required
and the ease of access which is possible with the simple
geometry of the cone and plate principle. A wipe with paper
tissue and suitable solvent is all that is normally
required.
Specification
The low
temperature
Viscometer has been designed to facilitate routine
measurement of the viscosity of paints. Good correlation
with application methods (e.g. brushing) is ensured by the
use of a high rate of shear (10,000 sec-1). The cone & plate
principle is selected because this is one of the most
convenient ways of obtaining high rates of shear.
The ranges
of measurement of 0-2, 0-5 poises and 0-10 poises are chosen
as suitable for most normal paints. Alternative rates of
shear or ranges of measurement can be obtained by using
cones of alternative size or angle.
Temperature
control is essential in measuring the viscosity of paint.
This Viscometer has built-in provision for holding the
sample at the temperature regardless of normal variations in
the bulk sample or in room temperature. Heating or cooling
of the sample is by a Peltier effect semi-conductor device.
The sample reaches the control temperature in no more than
15 seconds.
"A sample a minute" is well within the capacity of
this Viscometer.
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The
CPD 2000 REL Cone & Plate
Digital Viscometer
The CPD
2000 is a cone & plate Viscometer designed for the quick
results process control and quality required when monitoring
production.
Its design
has been based upon REL's experience of building the
Analogue Cone & Plate Viscometer which was used as the
original instrument for the BS3900 Standard.
It
continues to have a rugged design needed in manufacturing
but with new features to meet ever demanding controls on
modern production standards.
Its use is
found in the paint, varnish, inks, resins, food, bitumen,
oil, adhesives and pharmaceutical industries.
Specification
Manufactured to BS 3900:
A7, ASTM D 4287, ISO 2884
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Multi speed
Digital Viscometer
This
instrument, based upon REL's ICI Cone and Plate technology
is designed for use in process and quality control
applications.
Readings
may be taken at variable shear rates using multiple speeds
at temperatures between 10 degrees and 230 degrees
Centrigrade.
Possible
applications include: oils, paints, varnishes, resins,
bitumen, foods, inks, plastics and pharmaceutical products.
Incorporating the latest REL digital display for speed and
accuracy this unit can be seen on the specification
page..(to go there click the link bar opposite).
The
Viscometer's software requires a 486 PC or better with an
operating system using Win 3.1, Win 95, Win 98, or Win NT.
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Standard
Oils
Research
Equipment can supply you with Standard Oils for precise
viscometer calibration. The following standards are
available:
3 Poise
7 Poise
10 Poise
25 Poise
40 poise
Other Ranges to order.
The oils
come in convenient 60ml containers and the technical data
and life span are recorded on each individual container. The
oils are also available in tubs of 5 x 60ml.
This
instrument has been designed and developed to measure with
the minimum of error, the density of those paints that tend
to pick up significant quantities of air during manufacture.
The device operates on the principle of compressing the
paint to such an extent that included air bubbles are
reduced to a negligible volume. It can be used with
materials containing up to 10% by volume of included air and
is capable of results reproducible to better than ±0.5%.
The
instrument consists of a hollow cylinder with a plunger in
one end and a pressure release cap at the other. Pressure
can be applied to the sample of paint by advancing the
plunger with the screw provided. Excess paint is forced out
of the pressure release cap which is set at a value of 150
p.s.i. The instrument is so made that when the plunger is
screwed home the volume of paint enclosed is that of 100 gms.
of water at 16.7°C.
In order to
use the cup, the pressure release cap is removed and the
plunger withdrawn to the full extent in order to give the
cup its maximum capacity for filling. The cup is held
vertically with the open end at the top and the paint to be
tested is poured in until it is nearly full. The cup is then
closed by replacing the pressure release cap.
The paint
is now compressed by advancing the plunger. When the
pressure in the cup reaches 150 p.s.i. paint is forced out
between the cup and the pressure release cap. When the
plunger has been advanced to its full extent the paint in
the cup is at a pressure of 150 p.s.i. and the volume is the
same as that of 100 gms. of water at 16.7°C. If the
temperature is other than 16.7°C there will be a small error
due to the thermal expansion of the cup, which may be
regarded as negligible if the temperature is between 12°C
and 20°C. The excess paint is washed away from the top of
the cup and the whole instrument dried.
The weight
of the paint remaining in the cup is obtained by weighing
the cup and its contents and subtracting the tare weight of
the cup.
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