The torque exerted by viscous shear on the rotor is balanced by the work input of the falling weight. Astm d56210 standard test method for consistency of paints measuring krebs unit ku viscosity using a stormertype viscometer. Conversion between stormer viscometer krebs units and viscosity cup drain time pug271 011899. This krebs stormer viscometer is the ideal precision instrument for your laboratory and your research. Merge pdf files combine pdfs in the order you want with the easiest pdf merger available. Stokes law can be used to calculate the viscosity of the fluid. Pcervi 5 krebs stormer viscometer viscosity meter stormertype viscometer to measure krebs unit ku viscosity automatically or manually. Also used in paint, a stormer viscometer uses loadbased rotation in order to. Hold it firmly with one hand while screwing the spindle on with the other note lefthand thread. The stormer viscometer measures the viscosity of a fluid by measuring the time taken for an inner cylinder in the mechanism to perform a fixed number of revolutions in response to an actuating weight. The viscosity of a nonnewtonian material varies depending on the rate of shear, but krebs stormer viscometer can measure the viscosity at a set speed shear rate which provides a consistent standard. Thomasstormer viscosity standards calibrate manual and electronic thomasstormer viscometers.
Assuming the particlesspheres are objects with very small reynolds numbers, the following. Method a using ostwaldtype viscometer apparatus the apparatus consists of a glass utube viscometer see fig. Krebs stormer viscosity test instrument pcervi 6 pce instruments. Standard test method for consistency of paints measuring. Standard test method for washability properties of. Viscosity of newtonian and nonnewtonian liquids rotary. The experiment involves measurement of the time it takes for. Interpretation of viscometer test results for polymer support fluids doi. This type of viscometer is known as a stormer or krebs viscometer. Raptis, an ultrasonic instrument for measuring density and viscosity of tank waste, in science and technology for disposal of radioactive tank wastes, proceedings of the american chemical society symposium on science and technology for disposal of radioactive tank wastes, ed. A viscometer also called viscosimeter is an instrument used to measure the viscosity of a fluid. Calculation of viscometer constants for cannonfenske routine.
Target customers oil industry, petrol industry, inks and solvents, paint, food, detergents, cosmetic, pharma and chemical industries low budget and entry level customers. The stormer type viscometer, digital ku2, 115v, provides a direct digital reading in krebs units ku, centipose and grams gm. Bykgardner brookfield 7508 stormer viscometer, digital ku. All viscometer models feature 10 language options english, french, german, italian, japanese, portuguese, spanish, dutch, polish, and catalan, pushbutton control with easytouse menu system, motor selftest, user calibration to a known standard, and universal power supply. You can change the default program for pdf files to open it in a program thats more suitable and featurerich, such as acrobat reader dc or acrobat dc. Place the tube vertically in a waterbath maintained at the temperature indicated in the monograph and allow to stand for not less than 30. Attach the spindle lefthand thread to the viscometer lower shaft by lifting the coupling screw slightly. Do not attempt to operate the viscometer with the shipping cap in place. Viscosity and viscoelastic behavior of resins are very critical in composites manufacturing. Pcervi 6 is a krebs viscometer or stormer viscometer used in industrial and research applications to measure krebs unit viscosity according to the astm. Based on the popular traditional krebs method, using a weightdriven rotating paddle to sense the paint viscosity at a constant 200 rpm, this modern digital. More solutions to sticky problems ametek brookfield.
This cap is designed to protect the viscometer spindle coupling nut during shipment. Conversion between stormer viscometer krebs units and. Interpretation of viscometer test results for polymer support. Krebs stormer viscometer viscosity meter pcervi 5 pce.
Data can be saved as a file or exported to excel format. The values of co and b shown below are based on a coefficient of thermal expansion typical to that for a mineral oil. Jefferis2 1lecturer, school of mechanical, aerospace and civil engineering, the university of manchester, manchester, m 9pl, u. Falling sphere viscometer a glass or steel ball rolls down an almost vertical glass tube containing the test liquid at a known constant temperature the viscosity of fluid of liquid is directly related to the time taken by the ball to move between the two points. Fluid charactrization by use of a stormer viscometer. A wide variety of stormer viscometer options are available to you, such as auto testing machine, universal testing machine. Standard test method for washability properties of interior. If the filling temperature t p is substantially different than room temperature, the viscometer constant at test ten1perature t is co 1 b tt t pd. V viscosity 60 30 12 6 1 100 200 500 2 500 2500 5000 3 2000 4000 0 20000 4 0 20000 50000 00 rotors speed rmin vis1, viscometer specification. Interpretation of viscometer test results for polymer support fluids carlos lam1 and stephan a. The purpose of this experiment is to determine the viscosity of three different fluids, using the stormer viscometer shown in figure 1. Microsoft edge is the default program for opening pdf files on windows 10.
The mooney viscometer mv 3000 is the leading test instrument for measurement of viscosity, scorching and stress relaxation on polymers and rubber compounds. To do this we measure the viscosity using two different apparatuses. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used. A paddle type spindle is driven at 200rpm by a constant speed motor. Haake viscometer standard operating procedure updated. The bykovisc ds digital stormer viscometer measures fluid viscosity in krebs units ku. Astm d56210 standard test method for consistency of. Knowing the krebs value, convert this value to centipoise viscosity. Designed with a tft color screen and an intuitive touchpad, the evo expert also includes lightup led features for greater ease of use, a typea 2. Associate pdf files to always open in reader or acrobat on. The viscometer automatically starts or stops by lowering or raising the viscometer.
Viscosity measurement creating web pages in your account. This precision ku viscometer is designed and engineered in accordance with international testing standards, e. Plug the metal jack of the power supply into the circular receptacle on the back of the viscometer. Viscosity measurement purpose the purpose of this experiment is to measure the viscosity of a glycerinwater mixture with a thomasstormer viscometer. This viscometer may be a reference viscometer driving head at least 400 mm that has been. Ivb stormer viscometer viscosity meterdigital rotational viscometer stmivb. Separate one page or a whole set for easy conversion into independent pdf files. D bottle known as pyknometer also, stand, beaker, unknown liquid, distilled water. To change the order of your pdfs, drag and drop the files as you want. This type of viscometer consists of a circular cylinder filled by the liquid under investigation. The stormer viscometer measures the viscosity of a fluid by measuring the time taken for. Based on the popular traditional krebs method, using a weightdriven rotating paddle to sense the paint viscosity at a.
Viscosity describes a fluids internal resistance to flow and may be thought of as a. Viscometers are instruments used to measure viscosity, the internal friction of the layers of a liquid in motion. The first experiment is done by using the thomas stormer viscometer. What links here related changes upload file special pages permanent. It is designed around the astm d562 standard which can be used as an application reference. Thomas stormer rotational shear viscometer, calibrated.
Krebs stormer viscometer viscosity meter pcervi 6 pce. Bykgardner brookfield 7508 stormer viscometer, digital ku2. Thus, a rheometer can be considered as a special type of viscometer. Pcervi 5 is a krebs viscometer or stormer viscometer used in industrial and research applications to measure krebs unit viscosity according to the astm d562, astm d11 and astm d856 standards. Viscometers free delivery possible on eligible purchases. How to merge pdfs and combine pdf files adobe acrobat dc. A weight, w, is used to drive a rotor that is partially submerged in a sample of liquid. Interpretation of viscometer test results for polymer support fluids. Ku3 manual repair return form usa calibration template viscosity data sheet. The force of friction which one part of the liquid offers to another part of the liquid is called viscosity. Falling sphere viscometer the falling ball viscometer is based on stokes law.
Fluid charactrization by use of a stormer viscometer fluid. For thomasstormer viscometers based on nist value of 1. The vis2 digital stormer viscometer measures fluid viscosity in krebs units. Please, select more pdf files by clicking again on select pdf files. Haake viscometer standard operating procedure updated sept 10, 2014 general information viscosity is a measure of the resistatnce of a fluid which is being deformed by either shear stress of tensile stress.
Determination of viscosity by using ostwaldtype, suspended. Pcervi 6 is a krebs viscometer or stormer viscometer used in industrial and research applications to measure krebs unit viscosity according to the astm d562, astm d11 and astm d856 standards. Pcervi 6 krebs stormer viscometer viscosity meter stormertype viscometer with integrated temperature sensor to measure krebs unit ku viscosity. Brookfield stormer viscometer kerb viscometer ku2, model. Trying to make sense of the standard stormer viscometer and methods that could be used to calibrate a device, ive been looking at the original stormer viscometer in order to get an idea of what grams actually means in the case of the stormer viscometer.
A standard ball is allowed to fall down this tube over a calibrated distance of 100 mm. The torque exerted by viscous shear on the rotor is. The viscometer is calibrated by measuring the time taken with varying weights while the mechanism is. Ostwald viscometer, rubber tube with screw pinch cock, relative density r. Fluids lab 1 southern polytechnic state university fluid. Then by comparing the rate of strain dudy and shear stress t, with different values for the drive weight w, we can determine if the fluids are newtonian or nonnewtonian. Click add files and select the files you want to include in your pdf. Laboratory manual for eas 361 engineering fluid mechanics. This precision kuviscometer is designed and engineered in accordance with international testing standards, e.
Original fungilab viscometer for essential viscosity measurements, digital and easy to use. Click, drag, and drop to reorder files or press delete to remove any content you dont want. Astm d56210 standard test method for consistency of paints measuring krebs unit ku viscosity using a stormer type viscometer. Fill the viscometer, previously washed and completely dried, with the liquid under examination through tube l to slightly above the mark g, using a long pipette to minimize wetting the tube above the mark. Mount the guard leg, if used, spindle protector on the viscometer.
Viscosity measurement purpose the purpose of this experiment is to measure the viscosity of a glycerinwater mixture with a thomas stormer viscometer. The paddle type spindle is driven at constant 200 rpm by a computer controlled motor. Viscometers or viscosimeters are important to many industries, including the adhesive, biotech, chemical, food, paint, petroleum, and pharmaceutical industries. When we perform rheological experiments with a viscometer, usually it gives us shear stress values corresponding to particular revolution per minute rpm. The values of co and b shown below are based on a coefficient of thermal expansion typical to that for a. Astm d562 standard test method for consistency of paints measuring krebs unit ku viscosity using a stormer type viscometer. Apr 27, 2015 falling sphere viscometer the falling ball viscometer is based on stokes law.
Rearrange individual pages or entire files in the desired order. Offering brookfield stormer viscometer kerb viscometer ku2, model. While the viscolab 450 is designed for singlerange requirements, the viscolab 4000 is a small sample viscometer that is much more flexiblesupporting up to 12 different 20. The purpose of this experiment is to measure the viscosity of a glycerinwater mixture with a. Approximate viscosity in centipoise and krebs unit values at 25c are given in table below. Astm d56210 standard test method for consistency of paints. The free body diagram of the forces on a sphere accelerating in a viscous fluid is shown in figure 2. You can merge pdfs or a mix of pdf documents and other files. Speed 200rpm temperature measurements with a rtd probe. Paints measuring krebs unit ku viscosity using a stormertype viscometer krebs unit stormertype viscometers coatings. The reaction torque of the spindle rotating at 200rpm is converted to viscosity in krebs units.
Rheology rheology is the science of the flow and deformation of matter under the effect of an applied force matter. This simplifies an established test procedure providing an immediate calculation of the viscosity value. Interpretation of viscometer test results for polymer. Astm d562 102018 standard test method for consistency of. Vis1 rotational viscometer is designed for the determination of viscosity and theological behavior of fluid and semifluid. The krebs unit ku is often used for thomasstormer viscometers. Rotational viscometer alpha series allows fast and accurate viscosity readings. Thomas ships over 98% of domestic orders for instock items the same day we receive them or the very next day. Astm d562 standard test method for consistency of paints measuring krebs unit ku viscosity using a stormertype viscometer. The evo expert series is a modern, highquality viscometer that provides optimal performance in the testing of sample fluids. Viscosity measurement of coatings is essential at each stage of the manufacturing process to ensure consistent quality standards. Viscosity conversion tables by norcross corporation. Calculation of viscometer constants for cannonfenske.
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