Last edited by Goltikasa
Saturday, August 8, 2020 | History

2 edition of Capillary tube viscometry. found in the catalog.

Capillary tube viscometry.

Anthony Ralph Wheelhouse

Capillary tube viscometry.

by Anthony Ralph Wheelhouse

  • 359 Want to read
  • 38 Currently reading

Published in Bradford .
Written in English


Edition Notes

M.Sc. dissertation. Typescript.

SeriesDissertations
The Physical Object
Pagination95p.
Number of Pages95
ID Numbers
Open LibraryOL13787894M

Abstract Perturbation viscometry measures the pressure changes in a gas mixture flowing through a capillary tube when the flow is perturbed by adding a small flow of one of the pure components. The pressure upstream of the capillary rises because of the increase in flow and then rises or falls because of the change in viscosity.   Fluids Laboratory experiment for the University of Michigan - Dearborn as part of the ME course. Dexcool automotive coolant was the test .

VEVOR Digital Viscometer 1~ mPa.s Digital Rotary Viscometer NDJ-1 Fluidimeter Tester Meter Accuracy Plus or Minus 2% Newton Liquid Viscometer Digital Portable (NDJ . – This research project is aimed at investigating the viscosity of different brands of oil samples using a glass U tube viscometer with a capillary tube build into one leg. – To present an investigation results on the effects of the high viscosity and low volatility of raw vegetable oil sample.

Features These FUNGILAB glass capillary viscometers allow to determine viscosities using ASTM and DIN testing methods. All capillary viscometers are supplied with the cali- bration certificate issued in accordance with the conditions of accreditation granted by a National Metrological Register which has assessed the measurement capability of the laboratory, the test uncertainty and its. The scanning capillary viscometer is the most advanced method for assessing the viscosity of whole blood. Despite the fact that it shares the concept of capillary flow and a U-shaped geometry with the Ostwald tube, the scanning capillary viscometer is radically different from an Ostwald tube which measures viscosity only at a single, high-shear rate level--a shear rate level which is not known.


Share this book
You might also like
Industrial & toxic torts

Industrial & toxic torts

Order of battle

Order of battle

750 California Street, condonimium, San Francisco

750 California Street, condonimium, San Francisco

Annual report 1989/90.

Annual report 1989/90.

Chemistry: The Central Science

Chemistry: The Central Science

April fools

April fools

Planning and control systems

Planning and control systems

The Law and Policy of Toxic Substances Control

The Law and Policy of Toxic Substances Control

**REQUIRED FIELD**

**REQUIRED FIELD**

Working together

Working together

Law in the world community

Law in the world community

Environmental contacts - a guide for business

Environmental contacts - a guide for business

Document design

Document design

Capillary tube viscometry by Anthony Ralph Wheelhouse Download PDF EPUB FB2

U-tube viscometers. These devices are also known as glass capillary viscometers or Ostwald viscometers, named after Wilhelm r version is the Ubbelohde viscometer, which consists of a U-shaped glass tube held vertically in a controlled temperature one arm of the U is a vertical section of precise narrow bore (the capillary).

Equation () is called Jurin’s law. The capillary rise is inversely proportional to the tube radius. It can be also applied to the case where the liquid level in the tube decreases below the outer liquid surface; this situation happens when θ=90°.

The maximum possible height that a liquid can reach corresponds to θ=0 and is h=2γ/ρgR. In microfluidics, capillary tubes of µm. Capillary viscometer A viscometer based on Hagen Poisson's (Hagen-Poisculli) rule is obtained by measuring the flow rate of fluid flowing through the capillary, the pressure difference between the capillary outlet and the inlet, and then according to Hagen Poisson's law.

Hagen. Other articles where Capillary tube viscometer is discussed: viscometer: In the capillary tube viscometer, the pressure needed to force the fluid to flow at a specified rate through a narrow tube is measured.

Other types depend on measurements of the time taken for a sphere to fall through the fluid, or of the force needed to. The schematic setup of the capillary viscometer is shown in Fig. Syringe #1 containing the sample fluid was mounted on a syringe pump that pumped the sample fluid at various flow rates, while syringe #2 containing Capillary tube viscometry.

book enclosed air was fixed on a syringe pump that did not move during by: 1. A capillary viscometer may be used for determining the viscosity of Newtonian liquids and a rotating viscometer for determining the viscosity of Newtonian and non-Newtonian liquids.

Other viscometers may be used provided that the accuracy and precision is not less than that obtained with the viscometers described below. 01/ — the viscometers shall be placed in the bath in such a way that the capillary tubes are vertical, except for those types of viscometers for which another position is stipulated ; verticality shall be checked using a plumb bob.

Verification procedure External inspection. For gravity-type capillary viscometers, those relying on gravity to move the liquid through the tube rather than an applied force, Equation \ref{6} is used to find viscosity, obtained by substituting the relation Equation \ref{5} with the experimental values, where P is pressure, ρ is density, g is the gravitational constant, and h is the.

with additional tube for filling / discharging and thread connections Ubbelohde glass capillary viscometer with TC sensors, characteristics according to DIN and ISO Suitable especially for opaque samples, e.g. used motor oils. • Measuring temperature +10 +80 °C • with 4th tube for filling/discharging, and screw connections.

BS/IP/RF U-Tube Reverse Flow glass capillary viscometers are ideal for the measurement of opaque liquids within a range ofcSt.

Includes a calibration certificate with Constant values at 40°C and °C. Viscometers conform to ASTM D, D. BS/U Tube glass capillary viscometers are ideal for measuring the kinematic viscosity of transparent Newtonian fluids within a range ofcSt. Includes a calibration certificate with a Constant values at 40°C and °C and a precision of ±%.

Viscometers conform to ASTM D, D, ISO. Fluid Properties BAA -Fluid Mechanics / SEM 2 28 Capillary tube viscometer Figure 1 Fluid Properties Problem A capillary tube viscometer similar to that shown in Fig 1 is being used to measure the viscosity of an oil having a specific gravity of Determine the viscosity of the oil.

Capillary viscometers utilize a U-shaped glass tube with bulbs at either end—one higher than the other. The fluid’s viscometry is related to how long a defined quantity of fluid takes to pass a defined distance through the tube (of a defined diameter).

Capillary viscometers are the simplest form of viscometer available from which it is possible to obtain absolute values of viscosity for Newtonian fluids and to obtain limited information on power law fluids. The basic measurement made is of the time t taken for a fixed volume V of the test fluid to pass through a length L of capillary tubing.

Relative movement takes place between the axial. Viscometer, instrument for measuring the viscosity (resistance to internal flow) of a one version, the time taken for a given volume of fluid to flow through an opening is recorded.

In the capillary tube viscometer, the pressure needed to force the fluid to flow at a specified rate through a narrow tube is measured. Other types depend on measurements of the time taken for a sphere to.

PSL Rheotek offers the following automatic viscometer tubes suitable for measuring pulp and Cellulose: ISOAKV-T (recommended for ISO ) ISOAKV-C (recommended for ISO ) AKV Auto Ubbelohde - Universal pulp (recommended for ASTM D) A full range of AKV Ubbelohde tubes for pulp viscosity (recommended for Tappi T).

A capillary type viscometer similar to that shown in Fig. is being used to measure the viscosity of an oil having a specific gravity of The following data apply: Tube inside diameter = in = D.

Length between manometer taps = in = L. Manometer fluid = mercury. Manometer deflection = in = h. Velocity of flow = ft/s = v. A capillary viscometer consists of a very small diameter, cylindrical capillary tube.

A liquid is forced through the capillary by imposing a pressure drop. The very small diameter of the tube, the very large length to diameter ratio minimizes entrance and exit effects and ensures a fully developed velocity.

G. Robinson Last Modified Date: J A capillary viscometer is an instrument used to measure the viscosity, or thickness, of a liquid by measuring how long it takes the liquid to flow through a small-diameter tube, or flow, or efflux, time is directly proportional to the liquid's kinematic viscosity, and may be converted directly to viscosity by use of a conversion.

Viscometry SI Analytics, a brand of Xylem, formerly SCHOTT® Geräte and SCHOTT® Instruments, is a world-renowned manufacturer of glass capillary viscometers and automatic viscometry meters.

The product range initially includes a variety of different and high quality DURAN® glass capillary viscometers that comply with the relevant DIN, ISO. N upper vent tube P connecting tube R working capillary 5.

Viscometer Holder and Alignment All viscometers which have the upper meniscus directly above the lower meniscus (Cannon-Fenske routine in Annex A1 and all in Annex A2) shall be mounted in a constant temperature bath with tube L held within 1° of the vertical as.High-pressure capillary viscometers with electric drive.

Such a viscometer works in the same way as a weight-driven instrument (see the above section). However, the weight is replaced by a driving motor, which realizes high shear stress values (up to kPa) and medium to high shear rates (around 1, s-1).

Typical applications are highly.2 Basics of capillary viscometry Measurement principle Inside the capillary viscometers, the velocity drop re-quired for viscosity measurement is built up in the form of a laminar tube flow within a measurement capillary.

Under idealised conditions laminar, isothermal flow stationary flow condition Newtonian flow behaviour of the liquid.