The time required for the test liquid to flow through a capillary of a known diameter of a certain factor between two marked points is measured. Download scientific diagram the ostwald viscometer 2. Determination of the liquid permeability of consolidated cores experiment 4. Instruments for starting a paint labseptember 14, 2017in chemical. Calculation of viscometer constants for cannonfenske. Measure the terminal velocity of a ball falling in a fluid. If you do not agree you should not continue to use this website. The time of flow of liquid under test is compared with time required for the liquid of known. For more accurate measurements it is held in a controlled temperature bath. Instrument measuring kinematic viscosity of oil that has a specified temperature, e. Put viscometer vertically in the water bath at the desired temperature. Ostwald s viscometer is a traditional viscometer to measure the viscosity of a liquid. Ostwald viscometer, also known as utube viscometer or capillary.
In one arm, the bulb a is connected with a fine capillary. Ostwald viscometer is a commonly used viscometer, which consists of a ushaped glass tube held vertically. Repeat the experiment and record the results take average of results. A viscometer is a special type of rheometer an instrument for measuring rheological properties, which is limited to the measurement of viscosity. 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. Sensory quality assurance in the chilled and frozen ready meal, soup and sauce sectors. The experiment id then repeated with the same volume of a second liquid, and the time t 2 for the liquid level to. Under the stop mark there is a capillary with a specific hole dimension that ma. A n ostwald viscometer, which contains a vertical capillary tube t, is widely use for comparing the viscosities of two liquids. Viscosity measurement includes three virtual experiments. 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.
Kinematic viscosity isaac app viscometer auto viscometers. Determination of viscosity of liquid using ostwald viscometer. Ostwald viscometer, also known as utube viscometer or capillary viscometer is a device used to measure the viscosity of the. A cookie is a small file of letters and numbers that we put on your computer if you agree. The method of determining viscosity with this instrument.
Physical chemistry viscosity measurement of viscosity ostwald. A virtual experiment simulates a series of viscosity. Applications of ostwald viscometer and stokes law of. Each virtual experiment includes a corresponding theoretical section. Support from the program is sufficient to enable the students to carry out a virtual experiment sensibly and on their own. Viscosity measurement using ostwald viscometer slideshare. Calculation of viscometer constants for cannonfenske routine and cannonfenske opaque viscometers certain modified ostwald type viscometers for transparent liquids like the cannonfenske routine and the cannonmanning semimicro and reverseflow viscometers for opaque and. Determination of viscosity using ostwald viscometer. Liquid viscosity measurement using capillary tube viscometer, cone and plate type.
Ostwald viscometer viscosity determination with animation. 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. In our experiment we will be measuring the mass of equal volumes of liquid so that the viscosity will be proportional to the masses measured. Determination of viscosity using ostwald viscometer with. Ostwald viscometer is use to determine viscosity of newtonian fluid. Determination of viscosity with ostwald viscometer. 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. Viscosity measurement using ostwalds viscometer amrita. Instrumentation reference book fourth edition, 2010. 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 liquid is introduced at s, drawn by suction above p, and the time t 1 taken for the liquid level to fall between the fixed marks, p, q is observed.
1224 608 1462 1551 96 974 85 46 1233 66 384 1539 921 220 197 562 1451 1260 326 628 1491 1141 879 214 299 1312 432 1641 1126 188 1628 66 181 26 1134 460 1617 460 1557 250 488 982 322 964 1187 1149 584 564 1047