Determination of the molecular weight of a polymer from intrinsic viscosity measurements fig. Bsu tube glass capillary viscometers are ideal for measuring the kinematic viscosity of transparent newtonian fluids within a range of 0. Determination of saybolt, kinematic, and shear viscosity for a variety of liquids. A viscometer also called viscosimeter is an instrument used to measure the viscosity and flow parameters of a fluid. It is quite common and relatively simple to make measurements to within 0. Experiment experiment 3 report newtonian versus non. Laboratory manual for eas 361 engineering fluid mechanics. Determination of the molecular weight of a polymer from lec. Please click experiment theory, contents and results to find more information about this apparatus. The synthetic resin and the schiff base having a concentration ranging from 0. The tov viscometer system inline viscosity measurement tovl probe model tovl probe the probes sensor viscosity sensor is sized and shaped according to the specifications for greater sensitivity.
Tovl probes are installed into large vessels that already have high inertia to dampen noise. At low rotational velocity the moment of rotation tr which is exerted on a cylindrical layer of liquid with a radius r. Viscometer, instrument for measuring the viscosity resistance to internal flow of a fluid. When the liquid flow by gravity time required for the liquid to pass between two mark a and b through the capillary tube is determined. Put viscometer vertically in the water bath at the desired temperature. Place the viscometer in a constant temperature bath in the orientation shown in figure 4,a. Practical manual shri ramdeobaba college of engineering.
Nikita hemnani ben kegley michael lay jeremy miller ben smythe engr 3070l section 0 october 1, 2012 dr. Ostwald viscometer, rubber tube with screw pinch cock, relative density r. Pdf zusammenfugen pdfdateien online kostenlos zu kombinieren. Ostwald viscometer article about ostwald viscometer by the. For use in testing minute samples, the labpak viscometer is able to distinguish between boiling 0. This type of viscometer consists of a circular cylinder filled by the liquid under investigation. The method of determining viscosity with this instrument consists of measuring the time for a known volume of the liquid the volume contained between the marks a and b to flow through the capillary under the influence of gravity. In the capillary tube viscometer, the pressure needed to force the fluid to flow at a specified rate. Support from the program is sufficient to enable the students to carry out a virtual experiment sensibly and on their own. When you enter the lab, switch on the exhaust fan and make sure that all the chemicals and reagents required for the experiment are available.
Do not attempt to operate the viscometer with the shipping cap in place. A weight, w, is used to drive a rotor that is partially submerged in a sample of liquid. Viscometers thermo scientific haake viscotester 1 plus and 2 plus rotational viscometers quickly and reliably measure viscosity using the thermo scientific haake viscotester 1 plus and 2 plus rotational viscometers. Ostwald viscometer is use to determine viscosity of newtonian fluid. Thus, by knowing m, g, h, t, r, n1 andn2 from the experiment the mass moment of inertia i.
The values of co and b shown below are based on a coefficient of thermal expansion typical to that for a mineral oil. Newtons law of viscosity, given above, is a constitutive equation like. Determination of viscosity of organic solvents procedure. Pdfdateien in einzelne seiten aufteilen, seiten loschen oder drehen, pdfdateien einfach zusammenfugen oder. Ostwald viscometer tube outflow time of 80 to 100s with water at 20c. Perhaps the most common type of viscometer is a krebsstormer viscometer. Carry out the experiment with the tube in a vertical. Use a stopwatch to time a falling sphere, and compare results with the photoelectric timing method. Viscometers that can characterize nonnewtonian fluids are usually called rheometers or plastometers. Viscometers, monitor and control, safety, consumables. Calculation of viscometer constants for cannonfenske routine. See other formats the redwood viscometer by winslow h. Ps2pdf free online pdf merger allows faster merging of pdf files without a limit or watermark.
The internal property of a fluid for its resistance to flow is known as viscosity. With the viscometer in a vertical position, use the 10ml graduated pipette to introduce exactly 6. Redwood viscometer article about redwood viscometer by the. Fluids lab 1 fall 2003 viscosity objectives of the. Plug the metal jack of the power supply into the circular receptacle on the back of the viscometer. The determination of viscosity of newtonian liquids is carried out by means of a capillary viscometer unless otherwise specified. Determination of viscosity by using ostwaldtype, suspended. Our pdf merger allows you to quickly combine multiple pdf files into one single pdf document, in just a few clicks. Let the liquid to flow through the capillary tube with run time when the liquid reaches the mark shown on the viscometer and then stopped time when the liquid reaches the bottom mark. Sep 28, 2011 its just me experimenting with ostwald viscometers. Determination of viscosity by using ostwald type, suspendedlevel and rotating viscometer ankur choudhary print question forum no comments the determination of viscosity of newtonian liquids is carried out by means of a capillary viscometer unless otherwise specified. Ostwalds viscometer is a traditional viscometer to measure the viscosity of a liquid. Determination of saybolt, kinematic, and shear viscosity for. Herschel abstract the redwood viscometer was selected for calibration because there appeared to be some doubt whether or not the instrumental constants varied with the temperature.
Apr 27, 2015 falling sphere viscometer the falling ball viscometer is based on stokes law. Determination of viscosity using ostwald viscometer with. Reliable worldwide service and application support. Measuring ranges overlap, but the best results will be obtained if you are operating near the center of the viscometers range. Determination of viscosity by ostwald viscometer the viscosity of liquid is a resistance to flow of a liquid.
Always wear lab coat and gloves when you are in the lab. Fuel masstovolume conversion with outstanding precision. If the two aims of this paper are met, the presentation and interpretation of viscometer results can be standardized across different countries, thus making it easier for data and transfer and use. There are many different types of viscometers available for a wide variety of applications. Each virtual experiment includes a corresponding theoretical section. The time of flow of liquid under test is compared with time required for the liquid of known viscosity, the viscosity of unknown liquid. The force of friction which one part of the liquid offers to another part of the liquid is called viscosity. Natarajan data book on the viscosity of liquids in 1989 which mainly presented collected and evaluated liquid viscosity data from the literature. Quickly merge multiple pdf files or part of them into a single one. Fill the viscometer through tube l with a sufficient quantity of the sample liquid that is appropriate for the viscometer being used or by following the manufacturers instructions. Viscosity determination with a thomasstormer viscometer by. D bottle known as pyknometer also, stand, beaker, unknown liquid, distilled water.
Stokes law can be used to calculate the viscosity of the fluid. Viscometer test results and interpretation for a polymer support fluid. In the honour of hagenpoiseuille the unit of viscosity is called the poise p. Experiment 1 viscosity measurement purpose the purpose of this experiment is to measure the viscosity of a glycerinwater mixture with a thomasstormer viscometer.
See astm d445 and d2515 for more complete instructions. With more than 35 years of experience in viscosity determination, thousands of installed viscometers around the globe, and with an ondemand measurement service to help you find the right solution for your application, anton paar is the longstanding first. Ostwald viscometer, also known as utube viscometer or capillary viscometer is a device used to measure the viscosity of the liquid with a known density. The tov viscometer system introduction inline viscosity. The labpak viscometer utilizes a piston to measure timeoffall up to 20 seconds, with accuracy to within. The values of co and b shown below are based on a coefficient of thermal expansion typical to that for a. Both are ushaped pieces of glassware with a reservoir on one side and a measuring bulb with a capillary on the other. Interpretation of viscometer test results for polymer support. Fuel masstovolume conversion with outstanding precision duration.
Calculation of viscometer constants for cannonfenske. As the bulb is completely sub merged at the end, there is no question in regard to accuracy of reading, as with theengler, where. If youre wondering how to combine pdf files easily. Includes a calibration certificate with a constant values at 40c and 100c and a precision of 0. A standard britishtype viscometer in which the viscosity is determined by the time, in seconds, required for a certain quantity of liquid to pass out. Brookfield dial reading viscometer with electronic drive. To determine the kinematic viscosity of four grades of motor oil at various temperatures using a saybolt viscometer.
One of the c oauthors, professor viswanath, coauthored a book jointly with dr. Law using a syringe pascals ball aparatus communicating vessels finding the density of a liquid with a utube open tube manometer hares apparatus cartesian diver bernoullis principle venturis tube the ostwald viscometer capillary tube. Pdf suitability of viscosity measurement methods for liquid. Brookfield dial reading viscometer with electronic drive operating instructions manual no. It is particularly important to remember the following points. 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. Practical manual shri ramdeobaba college of engineering and. Group i 1 to find out type of alkalinity and estimate alkalinity present in the given water sample. This cap is designed to protect the viscometer spindle coupling nut during shipment. Points to remember while performing the experiment in a real laboratory. A liquid is introduced into the reservoir then sucked through the capillary and measuring bulb. The distillates were characterised in part by viscometry. Combinepdf is a nifty model, written in pure ruby, to parse pdf files and combine merge them with other pdf files, watermark them or stamp them all using. A worldwide service network ensures that the right contact person is always close by.
The gauge in this experiment is a rotary viscometer. Repeat the experiment and record the results take average of results. Determination of viscosity of liquid using ostwald viscometer. Oct 17, 2015 viscosity measurement using ostwald viscometer 1. To learn more about viscosity, how it varies relative to temperature, and to demonstrate one method of how it. Viscosity of newtonian and nonnewtonian liquids rotary. All liquids are to be introduced into the viscometer at room temperature. I oscar viscometer, a sealed can of fluid was oscillated torsionally, and by clever measurement techniques it was possible to measure both viscosity and elasticity in the sample. Ubbelohde glass capillary kinematic viscometer demonstration duration. At low rotational velocity the moment of rotation tr which is exerted on a cylindrical layer of liquid with a radius r and a height h conforms to the following relationship. In 1844 hagenpoiseuille did their work concerning the interpretation that liquid flow through tubes and he proposed an equation for viscosity of liquids.
For the most viscous glops, he used carl englers viscometer. Determination of viscosity of organic solvents theory. Viscosity measurement using ostwalds viscometer amrita. The liquid to be investigated is located between them. Youll also have the chance to experiment with pdf search and pdf squeezer. 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. Pdf merge combine pdf files free tool to merge pdf online. Flange the tovl flange is smaller than the tovs flange. Determine the absolute viscosity of organic liquids. Jul 05, 2016 ubbelohde glass capillary kinematic viscometer demonstration duration.
74 1436 707 917 1022 742 1347 1077 274 1212 1223 623 1268 1399 1033 117 85 721 1367 637 1467 675 142 638 463 508 638 101 880 209 180 443 983 566 452