Calculate the kinematic viscosity of the sample by multiplying the efflux time by the viscometer constant. Kinematic viscosity kv5000 kinematic viscosity bath. On kv4000, the user can enter the viscosity constant for each viscometer on the front lcd controldisplay, and then get the test result in both efflux time and viscosity units automatically after stopping each timer. 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. Measures viscosity and temperature simultaneously with an optional temperature probe with a choice of 18 different speeds. Clean the viscometer using suitable solvents, and dry by passing clean, dry, filtered. The kinematic viscosity is calculated by multiplying the efflux time by the. One can convert efflux time to kinematic viscosity by using an equation. Correlation between dry rubber content in field latex and viscosity measured with efflux time method article pdf available in songklanakarin journal of science and technology 345. Equation for determining viscosity from dimensions of efflux instrument and the time of discharge. Calculation of viscometer constants for cannonfenske routine.
One can convert efflux time to kinematic viscosity by using an equation for each cup specification number, where t is the efflux time and. If asrm efflux time is less than 60 s, select a viscometer of smaller. Sep 18, 2015 efflux cup viscometers are most commonly used for fieldwork to measure the viscosity of oils, syrups, varnish, paints and bitumen emulsions. Poor repeatability can result from incomplete dissolution of the pulp, inadequate temperature control, a dirty viscometer, or. Periodically, traces of n organic deposits should be removed with chromic acid or non. If a possibility of lint, dust, or other solid material is present in the.
It is extensively used worldwide in both the field and laboratory for the. Contec presents a new type of viscometer which uses the same measurement system as the bml viscometer for mortar and pastes, the contec viscometer 4. The viscometer size is selected to give efflux times of over 100 s, but less than 800 s. On paint standard specifications, one denotes viscosity in this manner. Rotational viscometer alpha series allows fast and accurate viscosity readings. Dynamic viscosity, also absolute viscosity, the more usual one typical units pas, poise, p. Viscosity of newtonian and nonnewtonian liquids rotary. After allowing the sample to attain bath temperature see a2. On kv4000, the user can enter the viscosity constant for each viscometer on the front lcd.
This cap is designed to protect the viscometer spindle coupling nut during shipment. Determination of kinematic viscosities for multiple oils and fuels with varying temperature shaan siton. About the measuring cystems for bmlviscometer pdf file viscometer 4 a viscometer to measure the theological properties of mortars, cement based repair materials, grout and pastes. The rotating viscometer measures the shearing forces in a liquid medium placed between two coaxial cylinders one of which is driven by a motor and the other is caused to revolve by the. The efflux time can also be converted to kinematic viscosities centistokes, cst through the conversion. Clean the viscometer using suitable solvents, and dry by passing clean, dry, filtered air through the instrument to remove the final traces of solvents. M98350j0912 specialists in the measurement and control of viscosity with offices in.
Apr 09, 2019 if asrm efflux time is less than 60 s, select a viscometer of smaller capillary diameter and repeat the operation. This is similar in principle to the flow cups efflux cups like the ford, zahn and shell cups which use different shapes to the cone and various nozzle sizes. Also included is a database for storing test data, determining test averages, standard deviations, and astm test repeatability as. For liquids with viscosities which vary with flow conditions, an instrument called a. By measuring the damping, the product of viscosity and density may be calculated by rheonics proprietary algorithms. Sep 29, 2012 the saybolt viscometer, one of the efflux cup viscometers is the standard instrument for testing petroleum products. Viscosity is a measure of the resistance of a fluid to deform under shear stress. The viscometer constant at other temperatures can be obtained by interpolation or extrapolation. Measuring standard power power weight range spindles requirement w kg sts2011 l 1001611 20 to 2. The cannonfenske opaque reverseflow viscometer see also astm d 445.
Rheonics srv inline online viscometer for fluid viscosity. To obtain kinematic viscosity in mm2 s cst multiply the efflux time in seconds by the viscometer constant. Method a using ostwaldtype viscometer apparatus the apparatus consists of a glass utube viscometer see fig. Pdf analysis of kinematic viscosity for liquids by varying.
It is commonly perceived as flow behaviour or resistance to pouring. Without recharging the viscometer, make check determinations by repeating. Raptis, an ultrasonic instrument for measuring density and viscosity of tank waste, in science and technology for disposal of radioactive tank wastes. Viscosity describes a fluids internal resistance to flow and may be thought of. Viscometers, monitor and control, safety, consumables. The model 800 8speed electronic viscometer is designed and exclusively manufactured by ofi testing equipment, inc. Determination of efflux time by the efflux viscometer.
There are three types of orifices availableuniversal, furol, asphalt. Viscosity measurement using cannonfenske viscometers. Pdf correlation between dry rubber content in field latex. Efflux from a tank system h the length and the diameter of the exit pipe are variables depending upon which of the eight available pipes is used. Calculation of viscometer constants for cannonfenske. To measure the efflux time, allow the liquid sample to flow freely down past mark e, measuring the time for the meniscus to pass from mark e to mark f. All bsi british standards available online in electronic and. Viscosity describes a fluids internal resistance to flow and may be thought of as a measure of fluid friction.
The controller can calibrate the timeoffall value to cup seconds known as efflux cupsaybolt universal second sus or centipoise. To repeat efflux time measurement, repeat steps 7 and 8. The efflux time is measured by allowing the sample to flow freely through mark c, measuring the time for the meniscus to pass from c to e. Brookfield digital viscometer model dve operating instructions manual no. May 2011 bitumen and bituminous binders determination of efflux time by the efflux viscometer part 1.
The efflux time can also be converted to kinematic viscosities centistokes. Plug the metal jack of the power supply into the circular receptacle on the back of the viscometer. In paint industries, viscosity is commonly measured with a zahn cup, in which the efflux time is determined and given to customers. A continuous sensing capability for rapid viscosity measurement makes this economical dv1 digital viscometer a standout. The more viscous the fluid, the higher the mechanical damping of the resonator. Objectives for rp15 the objectives of the project are. All bsi british standards available online in electronic and print formats. Instructions for the use of the ubbelohde viscometer. The kinematic viscosity is calculated by multiplying the efflux time by the viscometer constant. Measures viscosity and temperature simultaneously with an.
Viscometer precision bath page 290 glass viscometers page 291 to 292 monitor and control apparatus pages 293 to 297 glass thermometers pages 296 to 297 laboratory reactors pages. One of the most common instruments for measuring kinematic viscosity is the glass capillary viscometer. Viscosity at final plays a key role in th processing stage. Determination of kinematic viscosities for multiple oils and fuels with varying temperature shaan siton email protected 11 th march 2018 abstract the viscosity of fuels and oils. A viscometer also called viscosimeter is an instrument used to measure the viscosity of a fluid. Flow of molten milk chocolate from an efflux viscometer under. A viscometer also called viscosimeter is an instrument used to measure the viscosity of saybolt viscometer experiment fluid. If you select an existing file, ascii port analysis data will be appended to the file. Original fungilab viscometer for essential viscosity measurements, digital and easy to use. Table 1 pipe dimensions length inches inside diameter inches 30 316 24 316 12 316 6 316 1 316. Cutback and fluxed bituminous binders bs en iso 193962. Measure the efflux time between the upper and lower marks. The falling ball viscometer is based on stokes law.
The flow rate or efflux time represents the fluid flow for a set flow resistance. Understanding fluid flow by modeling efflux from a tank. Mar 07, 2014 fallingpiston or fallingball viscometer. Minivisc 3000 portable kinematic viscometer portable. The testing procedure is quite similar to the capillarytube viscometers 5. The furol and asphalt orifices, respectively, have an efflux time of approximately, onetenth and onehundredth that of the universal orifice. The rheonics srv fluid viscometer measures viscosity by means of a torsional resonator, one end of which is immersed in the fluid under test. This manual viscometer consists of a sample reservoir and a capillary tube.
About the measuring cystems for bmlviscometer pdf file viscometer 4 a viscometer to measure the theological properties of mortars, cement based repair materials, grout and. Results showed that the inclusion of pmma polymer in asphalt binder has significantly improved its properties. Viscometer in chemical applications viscometer basic information the viscosity rheology describes by means of a measurement the flow behavior of the liquids and gases. Flow of molten milk chocolate from an efflux viscometer. A quick check with viscosity and ferrous particle concentration in the field is the simplest way to make sure oil is good and machine wear is. Portable viscometer viscolite d21 viscolite d21 is a portable resonant or vibrational viscometer used in industrial and research applications to measure viscosity in samples 100 ml 100 cc 3. Viscosity 5 viscosity coefficients viscosity coefficients can be defined in two ways. The viscosity constant for capillarytype viscometers is given by. Determination of viscosity by using ostwaldtype, suspended.
Poor repeatability can result from incomplete dissolution of the pulp, inadequate temperature control, a dirty viscometer, or impurities in the nitrogen gas. Boston chicago london stuttgart guangzhou brookfield engineering laboratories, inc. Find automatic efflux cup viscometers related suppliers, manufacturers, products and specifications on globalspec a trusted source of automatic efflux cup viscometers. Oct 16, 2018 the controller can calibrate the timeoffall value to cup seconds known as efflux cupsaybolt universal second sus or centipoise. Target customers oil industry, petrol industry, inks and solvents, paint, food, detergents, cosmetic, pharma and chemical industries low budget and entry level customers.
To obtain kinematic viscosity in mm2 s cst multiply the efflux time in seconds by the. Description of redwood viscometer the redwood viscometer, 3 which is standard in england, is of the same general efflux type as the engler, of germany, and the saybolt universal, which has been adopted as standard for lubri cating oils in the united states. Viscometers or viscosimeters are important to many industries, including the adhesive, biotech, chemical, food, paint, petroleum, and pharmaceutical industries. Viscometers are instruments used to measure viscosity, the internal friction of the layers of a liquid in motion. Pdf correlation between dry rubber content in field.
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