::: Viscometry at its best

SVM 3000Stabinger Viscometer

Measuring principle

The SVM 3000 uses a completely new and uniquemeasuring principle. The measuring cell contains a tube filledwith sample which rotates at a constant speed. In this tubefloats a measuring rotor. The result is the first rotationalviscometer which completely eliminates the influence ofbearing friction.

Soft iron ringThis centers the rotor axially.

MagnetThe magnet is built into the rotor. It serves to generate eddycurrents depending on the speed of the rotor.

Hall effect sensorTo measure the speed of the rotor. The dynamic viscosity iscalculated from the speed.

TubeThis tube contains the sample and rotates at a constantspeed.

RotorThe hollow lightweight rotor floats in the sample and iscentered by the centrifugal forces during measurement.Consequently, the friction is zero. Shortly after start of themeasurement the rotor reaches a steady speed determinedby the brake torque of the eddy currents and the drivingshear forces of the sample.

Copper casingThe eddy currents develop here. Further, the copper ensuresa precise temperature distribution in the measuring cell.

SVM 3000Stabinger Viscometer

soft iron ring

magnet

hall effect sensor

tube (constant speed)

rotor (measured speed)

copper casing

sample

Rotational Viscometer for Kinematic Viscosity

Anton Paar introduces an instrument which willrevolutionize the determination of kinematic viscosity.

The SVM 3000 works according to a new, patented(EP 0 926 481 A2) measuring principle which istechnically brilliant yet ingeniously simple. Viscositymeasurement has never been so easy.

Moreover the extremely high sensitivity of the eddycurrent torque measuring system gives it a yet unrivalledprecision.

The torque resolution is as fine as 50 pico-Nm. This iscomparable to the torque resulting from a dust particleon a 1 cm lever arm.

Patented

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EP 0 926 481 A2 • PatentedTechnologies

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Features and benefits

SV

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Design of the instrument

We have integrated the new measuring principle into aninstrument which is as compact and reliable as Anton Paar'swell-known density meters. The development processresulted in the following design:

Thermostatting and temperature controlCascaded Peltier elements plus sophisticated

electronics allow a wide temperature range and exceptionalheating and cooling performance. The platinum temperatureprobe, the solid copper casing and the foam insulation makethe SVM 3000 the best thermostatted viscometer.

Viscosity cellNo more hassle with the measuring range of

capillaries – one measuring cell covers the whole range.

Density cellIn order to calculate the kinematic viscosity from the

measured dynamic viscosity, the density value must beknown. For this reason, the SVM 3000 also has a densitycell using the well-known oscillating U-tube principle. Boththe density cell and the viscosity cell are filled in one singleprocedure; the two different measurements occursimultaneously.

All these features in one compact instrument!

The unique measuring principle in the SVM 3000opens up a whole new era in viscosity measurement.

The SVM 3000 is superior to conventional capillaryviscometers in all respects.

It requires a fraction of the lab space and isextremely robust, installation is a matter of minutes.

The operation of the SVM 3000 is exceptionally easyand precise results are received within minutes.

The SVM 3000 vs. traditionalcapillary viscometers

Comparison: Size The SVM 3000 is a compact bench-top instrument, whereasconventional devices often take up ten times the space!

Comparison: Viscosity rangeTo measure the whole viscosity range from less than1 up to 10 000 mm2/s would require 13 capillaries.The SVM 3000 covers the whole range comfortablyand easily.

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Typical applications

Ease of use

Sample fillingSample filling is performed simply and easily with asyringe. The unique new measuring principle requiresonly a small sample volume.

ThermostattingThe high-precision Peltier system allows rapid heatingand cooling while covering a wide temperature range.This enables viscosity index measurements to becarried out with one single instrument.

Measuring cycleAfter reaching the set temperature, the instrumentperforms the viscosity and density measurements.The electronics calculates the kinematic viscosity. Theobtained values can then be sent to a PC or a printervia the RS 232 interface.

Cleaning procedureWhile for normal use a fast and easy rinsing processis sufficient, the viscosity cell can also be easily takenapart and scrubbed with brushes. This assures thateven difficult samples can be removed without usinghighly aggresive and toxic detergents like chromicacid mixture.

The SVM 3000 is designed to give comparable resultsto traditional Ubbelohde viscometers.

Typical applications include:

- R&D tasks, i.e. temperature scans over awide range

- quality control in the lab, i.e. determination of the kinematic and dynamic viscosity plus the density of mineral oils

- viscosity index VI- low temperature measurement of fuels- field measurements, i.e. used oil in car fleets,

locomotives, ship diesel engines, power plants and bulldozers

Specifications

Measuring rangedynamic viscosity 0.2 to 10 000 mPa.skinematic viscosity 0.2 to 10 000 mm2/sdensity 0.65 to 2 g/cm3

Temperature rangemaximum +100 °C / 212 °Fminimum w/o counter cooling 20 °C / 36 °F below ambientwith cooling at –20°C / -4°F -40 °C / -40 °F

Reproducibilityviscosity 0.35% of measured valuedensity 0.0005 g/cm3

Required sample volumeboth measuring cells 3 ml

Sample throughput up to 20 samples per hour

Dimensions/weightlength x width x height net 440 x 310 x 215 mm

(17.25 x 12 x 8.5 inches)net weight 13/28 kg/lbs

Interfacesprinter / PC RS 232barcode reader, keyboard AT-keyboard low power

Power supplywide range, sinusoidal current 85 to 264 VAC, 48 to 62 Hz, 50W

Options printer, keyboard

Dr. Hans Stabinger

In the early 60s, the young Hans Stabinger studiedin Graz, Austria at the Technical University. Besideshis studies he worked in a laboratory, where he hadto perform monotonous and time-consumingmeasurements to determine the density of liquids.This lead him to his first ingenious invention. Hesimply refused to accept that there wasn’t a betterway.

Brilliant ideas are often very simple. The new methodDr. Hans Stabinger developed for densitymeasurement was deceptively so. Up until then,accurate density measurements could only beobtained using high precision hydrostatic weighingdevices which filled a whole room and were veryexpensive. This method used the effect ofgravitational force on the sample and Dr. Stabingerrealised he had to replace gravitational accelerationwith an acceleration which was many times higher.This, he believed, was the key to a simple but highlyaccurate new method.

The outcome was the oscillating U-tube, which isfilled with the sample liquid and excited to oscillatevia magnetic coils. Today, the oscillating U-tubeprinciple is the accepted standard for densitymeasurement.

Everyone familiar with Dr. Hans Stabinger knows thathe’s not only a great inventor but also has a sense ofhumor. Referring to his latest invention he joked,

Two ingenious measuring principles fromone ingenious scientist

The last few centuries have seen many methods formeasuring viscosity. These fall into two groups:

Either expensive instruments which are difficult andtime-consuming to operate but produce highlyaccurate results or simpler, easy to use deviceswhich lack precision.

Dr. Hans Stabinger was convinced there was abetter solution, combining high precision and easeof use.

“After 30 years, I had my second good idea!”Once again Dr. Stabinger has come up with anastounding new method, which introduces arevolutionary new approach to a long-standingmeasuring problem and looks set to changeestablished habits. The new measuring principle fordetermining viscosity promises to be as successfulas the oscillating U-tube.

This measuring principle is so different fromconventional methods that the instrument cannot beclassified using the terms “capillary” or “rotationalviscometer”. Consequently, another good idea wasrequired to find a suitable name for this outstandinginstrument. As is tradition in viscometry (think ofwell-known names such as Hoeppler andUbbelohde), the measuring principle was namedafter its inventor and the Stabinger Viscometer wasborn.

Anton Paar® GmbHAnton-Paar-Str. 20A-8054 GrazAustria - EuropeTel: +43 (0)316 257-0Fax: +43 (0)316 257-257E-mail: info@anton-paar.comWeb: www.anton-paar.com

Instruments for:Density and concentrationmeasurement

Rheology and viscometry

Sample preparation

Colloid science

X-ray structure analysis

CO2 measurement

High-precision temperature measurement

01/02 C18IP07C

Certified

Qualit

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Ant

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Paar Graz-Austria • CertificateN

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18013

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ISO

9001 certified

Specificationssubject to change

without notice.