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Thermo Scientific Haake Viscosity Instruments | Rheometer Viscosity | Viscometer and Rheometer - Thermo Scientific Haake When user-friendliness and reliability matter Thermo Scientifi c Viscometer 2 VISCOMETRY Basic principles in rheology Selecting a viscometer Viscometry Flow behavior Viscometers determine the flow behavior In rheology we differentiate between of fluids. Viscosity describes a material so-called Newtonian and non-Newtonian property which is dependent on different materials. Newtonian materials are parameters such as mechanical stress and characterized by a viscosity which may strain, time as well as temperature and depend on temperature but is independent other ambient conditions. of the shear rate (and shear stress). Yet the viscosity of non-Newtonian materials [mPa·s] depends on the shear rate. For most η non-Newtonian materials the viscosity decreases with increasing shear rate. Viscosity This behavior is called shear-thinning, or pseudoplastic. A material in which viscosity increases at increasing shear Temperature T [°C] rates is called shear-thickening or dilatant. Materials that do not flow until the applied shear stress surpasses a certain value are said to have a yield-stress. [Pa] τ Shear Stress Rotational viscometers Newton Using a rotational viscometer, the viscosity . Shear Rate γ [1/s] Dilatant is calculated from the measured torque and Pseudoplastic rotational speed as well as the dimensions Plastic of the measuring geometry. If the Bingham measuring geometry fulfils certain requirements (e.g. small gap), which is the case for coaxial cylinder, plate/plate and cone/plate measuring geometries (DIN 53018, DIN 53019...), the absolute [mPa·s] value of the viscosity can be calculated. Falling ball viscometers η The falling ball viscometer is a conventional If the dimensions of the measuring and highly accurate instrument for the Viscosity geometry are not well defined, only a determination of the absolute value of relative value for the viscosity can be the viscosity of a Newtonian material. Shear Rate γ [1/s] determined. In this case, the measured The viscosity can be calculated from the viscosity value not only depends on the falling time of the ball, the density of the ambient conditions, but also on the test ball as well as the diameter of the tube method, i.e. the measuring geometry. and the ball. OVERVIEW OF THERMO SCIENTIFIC 3 HAAKE VISCOMETERS HAAKE Viscotester 1 plus and 2 plus HAAKE Viscotester E, D, C HAAKE Falling Ball Viscometer Page 4 Page 6 Page 9 Measurement relative relative absolute* Standards ISO 2555 DIN 53015, ISO 12058 Viscosity HAAKE Viscotester 1 plus: low L-Version: low to medium low to high HAAKE Viscotester 2 plus: medium R-Version: medium to high Specials battery-powered hand-held instrument, temperature-controlled measurements on gases digital display quick fi t coupling for spindles HAAKE RheoWin software HAAKE Viscotester 550 HAAKE RotoVisco 1 Service & Standard Liquids Page 10 Page 13 Page 15 Measurement absolute** absolute** Standards DIN 53018/53019, ISO 3219 DIN 53018/53019, ISO 3219 Viscosity low to high low to high Specials temperature-controlled, built in temperature control unit application-oriented packages automatic lift control HAAKE RheoWin software application-oriented packages HAAKE RheoWin software * For Newtonian substances ** Using absolute measuring geometries THERMO SCIENTIFIC 4 HAAKE VISCOTESTER 1 PLUS AND 2 PLUS Application These small, battery-operated rotational viscometers are suitable for quick and reliable tests and comparative measurements for quality control applications. The hand-held instruments can also be operated on a stand. User friendliness Typical applicationpplication fi elds The operation of the Thermo Scientific • Quick viscosityosity tests, e.g. HAAKE Viscotester 1 plus and 2 plus is for processs optimizationoptimization easy due to the one-button operation. or machinee adjustmentadjustment The viscotester is switched on and off • Batch controltrol in productionproduction by pushing the button once. Pushing the button again selects the rotor type and Typical samplesmples starts the measurement. • Printing inks,ks, paints, inksinks • Shampoos,, creams, lotionslotions Digital display • Oils, greases,ses, pastespastes Contrary to the traditional viscotester • Sauces, thickenersickeners models where the viscosity value is read from an analog dial, the HAAKE Measuringg principle Viscotesters 1 plus and 2 plus show A rotor rotatingng at a constant speedspeed isis the viscosity value on a digital display. immersed in the fluidfluid to be tested; the Therefore, errors caused by misreading the fluid’s resistanceance ttoo ththee rotationrotation measuresmeasures dial belong to the past. Possible handling the viscosity of the fluid. The small batterbattery-y- errors as well as service information are operated rotationalational viscometer can be also shown on the display. operated independentlyependently of a mains supply,supply, which meanss quickquick and reliable viscosityviscosity Main features measurementsts can be peperformedrformed virtuallvirtuallyy • Quick, exact and reliable everywhere. • One button operation • LCD display Compatibilityility • No mains supply required Measuring cupsups and rotors fromfrom previous viscometer modelsmodels – Thermo SScientificcientific HAAKE VT01 andand VT02VT02 – can alsoalso bebe useusedd with the plus units. 5 Order information Order-No. Description 399-0100 HAAKE Viscotester 1 plus: Basic instrument with batteries Instrument holder 2 Measuring cups (A and B) 3 Rotors (No. 3, 4, 5) Delivered in a carrying case 399-0200 HAAKE Viscotester 2 plus: Basic instrument with batteries Instrument holder 1 Measuring cup (3) 3 Rotors (No. 1, 2, 3) Delivered in a carrying case 222-1693 Calibration to a measuring accuracy of +/-1% FSD (HAAKE Viscotester 2 plus) Technical data 399-0202 HAAKE Viscotester 2 plus η in mPas • Viscosity range* 1 plus: 1.5 mPas – 330 mPas 222-1688 Battery charger incl. 2 plus: 0.3 dPas – 4000 dPas 4 AA batteries (30 mPas – 400.000 mPas) • Temperature up to 150 °C • Rotor speed 62,5 rpm • Reproducibility +/- 1 % FSD • Measuring accuracy standard: +/- 5 % FSD optional: +/- 1 % FSD (HAAKE Viscotester 2 plus) • Standard display HAAKE Viscotester 1 plus η in mPas HAAKE Viscotester 2 plus η in dPas • Optional HAAKE Viscotester 2 plus η in mPas *1 mPas = 1 cP 222-1678 Support Stand 222-1679 Rotor No 1 222-1680 Rotor No 2 222-1681 Rotor No 3 222-1682 Rotor No 4 222-1683 Rotor No 5 222-1685 Cup B 222-1684 Cup A 222-1686 Cup 3 THERMO SCIENTIFIC 6 HAAKE VISCOTESTER E, D AND C Application Common features of the HAAKE Viscotester E, D and C The Thermo Scientific HAAKE Viscotester E, D and C units can be • Ready to go package – unpack, switch on and start measuring viscosity used for tests and comparative measurements for quality control • Digital display of viscosity, % torque, speed, spindle, upper viscosity according to recognized standards. limit, temperature (optional), in selectable units • Integrated automatic diagnostic functionality Measuring principle • Visual and acoustic signals at critical measuring conditions The HAAKE Viscotester E, D and C are clas si cal rotational viscometers • Easy viscosity and temperature (optional) calibrations that measure the resistance of a test substance against a pre set • 10 user interface languages speed. The resulting torque or resistance measures the viscosity • 2 years warranty of the fluid. The higher the torque, the higher the vis cos i ty. Due to the type of stand ard ized geometries, the shear rates gen er at ed Standards can only be de ter mined precisely for New to ni an substances. The HAAKE Viscotester E, D and C meet the following standards: BS: 6075, 5350; ISO: 2555, 1652 Compatibility ASTM: 115, 789, 1076, 1084, 1286, 1417, 1439, 1638, 1824, 2196, The basic ISO 2555 standard describes the design and the 2336, 2364, 2393, 2556, 2669, 2849, 2983, 2994, 3232, 3236, 3716 characteristic measuring technique of a viscosity measuring instrument (torque, speed, rotor geometry). If rotational Technical data viscometers meet these requirements, results comply. • Viscosity range: depending on version (L or R) • Accuracy:Accuracy: ++/-/- 1 % FSD • Reproducibility: Reproducibility: 0.2 % • Supplied Supplied at 100 – 240 V/50 – 60 Hz 7 HAAKE Viscotester E – The expert model Order No. Description For automatic flow curve measurements with 399-0500 HAAKE Viscotester E (R-version) full PC control. Base unit with stand, spindles R2 Additional features: to R7, rack, spindle guard, Pt 100 • 6 line LCD display with 12 keys in a carrying case • Display of sample temperature, shear rate and shear 399-0510 HAAKE Viscotester E (R-version) stress for coaxial spindles, routine parameters, etc. 399-0500 with quick fit coupling • Internal memory for 9 advanced measuring routines • Routine programming functions 399-0501 HAAKE Viscotester E (L-version) • USB for software control Base unit with stand, spindles L1 to L4, rack, spindle guard , Pt 100 • Rotational speeds: 54 between 0.01 rpm and 200 rpm in a carrying case •Viscosity range: R-Version: 100 mPas – 40.000.000 mPas 399-0511 HAAKE Viscotester E (L-version) L-Version: 15 mPas – 6.000.000 mPas 399-0501 with quick fit coupling Optional: • One hand quick fit coupling for spindles • HAAKE RheoWin measuring and evaluation software HAAKE Viscotester D – The distinct model Order No. Description For routine viscosity measurements with 399-0400 HAAKE Viscotester D (R-version) data transfer. Base unit with stand, spindles R2 Additional features:
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