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Monday, August 10, 2020 | History

1 edition of Revised marsh funnel calibrations for measuring fire retardant viscosity found in the catalog.

Revised marsh funnel calibrations for measuring fire retardant viscosity

C. W. George

Revised marsh funnel calibrations for measuring fire retardant viscosity

by C. W. George

  • 231 Want to read
  • 28 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Intermountain Forest & Range Experiment Station in Ogden, Utah .
Written in English

    Subjects:
  • Viscosity,
  • Fireproofing agents

  • Edition Notes

    StatementCharles W. George and Cecilia W. Johnson
    SeriesUSDA Forest Service research note INT -- 205, USDA Forest Service research note INT -- 205.
    ContributionsJohnson, C. W., Intermountain Forest and Range Experiment Station (Ogden, Utah), United States. Forest Service
    The Physical Object
    Pagination3 p. :
    ID Numbers
    Open LibraryOL25600497M
    OCLC/WorldCa150469200

    For rheological analysis, Marsh Funnel and Fann 35 viscometer were used to determine rheological properties of synthetic crude oil and the suspensions of several drilling fluid additives separately at room temperature (i.e., K). To use Marsh Funnel for rheological analysis, the drainage volume was measured with the varying drainage by: Current commonly use viscosity measurement techniques cannot be used for all types of fluids. For fluids in the under cooled region a new method of measuring the viscosity is required. A process of viscosity measurement, by measuring the speed of droplet coalescence in a microgravity environment, was developed. This paper.

    The rheological properties of cement-based grouts containing talc or palygorskite were investi- gated for optimizing fluidity and quick strengthening at injection. The fluidity controls the ability of grout to penetrate fractures and can be determined by pipe flow tests, Marsh funnel tests, mini-slump cone tests and rheometer tests. The grouts were 1) Talc for fluidity and strength by Cited by:   Drawing together literature from a variety of fields, Food Texture and Viscosity, Second Edition, includes a brief history of this area and its basic principles. It reviews how texture and viscosity are measured, including the physical interactions between the human body and food, objective methods of texture measurements, the latest advances in texture-measuring 4/5(1).

    to obtain the viscosity in pascal seconds (Pas). For instruments that offer automation, the results of a 3-min integration shall be acceptable. Report Report test temperature, apparatus-measuring geom-etry type and size, torque in mNm or percent of instrument capacity, and speed in sec-1 or r/min with viscosity results inFile Size: 31KB. The definition of viscosity by Equation is valid only for laminar (i.e., layered or sheet-like) or streamline flow as depicted in Figure , and it refers to the molecular viscosity or intrinsic viscosity. The molecular viscosity is a property of the material that depends microscopically on bond strengths,File Size: KB.


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Revised marsh funnel calibrations for measuring fire retardant viscosity by C. W. George Download PDF EPUB FB2

Updates data (Research Note INT) for measuring viscosity of fire retardants in the field by means of the Marsh Funnel. New data cover Tenogum and gum-thickened Fire-Trol Data for Gelgard (no longer available) have been dropped.

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Open : 8. Research Note INT REVISED MARSH FUNNEL CALIBRATIONS FOR MEASURING FIRE RETARDANT VISCOSITY Charles W. George and Cecilia W. Johnson 1 ABSTRACT Updates data (Research Note INT) for measuring viscosity of five retardants in the field by means of the Marsh Funnel.

Revised marsh funnel calibrations for measuring fire retardant viscosity / Charles W. George and Cecilia W. : C. (Charles W.) George. being measured. The Marsh Funnel “viscosity” is reported as seconds and used as an indicator of the relative consistency of fluids.

The more viscous the fluid the longer the time to fill one quart. The calibration for Marsh Funnel time is 28 seconds per quart for fresh water. The standard Marsh Funnel is shown in Fig. The Marsh Funnel.

The funnel devised by Marsh 1 in the late 's is the classical method of defining the viscosity of drilling mud in day to day use. It consists of an inverted cone, to the vertex of which a standard orifice tube is fixed (Fig.

The Marsh funnel, developed in the late s, is an orifice meter, that is, a simple draining cone under gravitational force without replenishment for measuring the viscosity of drilling mud.

The Marsh Funnel is a simple device for indicating viscosity on a routine basis. When used with a measuring cup the funnel gives an empirical value for the consistency of a fluid. The number obtained depends partly on the effective viscosity at the rate of shear prevailing in the orifice, and partly on the rate of gelation.

Viscosity is a fundamental characteristic for slurries in construction applications. The Marsh Funnel Viscosity test can be used for field quality control of slurries. Relative changes in slurry viscosity can be identified using Marsh Funnel measurements and modifications can be made to mixing and handling procedures.

ISO certified viscosity standards are for the calibration and verification of glass capillary viscometers and other viscosity measuring equipment where operating temperature is controlled precisely.

MAIN CHARACTERISTICS UKAS certified to ISO Quality Size: KB. The directions for use of a Marsh Funnel are given below. The procedures for modifying the Marsh Funnel for use in determining the viscosity of long-term retardants (Forest Service modification) and the consistency of water enhancers (California Department of Forestry and Fire Protection, CDF modification) are provided in the following pages.

Materials: Marsh Funnel (Use small tip, 3/16” diameter, for low-viscosity. Periodically check the calibration of the Marsh Funnel by measuring the viscosity of fresh water. The funnel is dimensioned so that the outflow of one quart ( cc) of fresh water at a temperature of 70‘±5‘F (21‘±3‘C) is 26± seconds.

If the Marsh Funnel checks out of calibration, it should be cleaned again, using a pipeFile Size: 30KB. Marsh funnel viscometer is widely used in field measurement of the viscosity of drilling fluid.

Though simple and cheap, the Marsh runnel can only measure. The Marsh Funnel is a simple device for indicating viscosity on a routine basis.

When used with a measuring cup the funnel gives an empirical value for the consistency of a drilling fluid. The number obtained depends partly on the effective viscosity at the rate of shear prevailing in the orifice, and partly on the rate of gelation.

Revised marsh funnel table for measuring viscosity of fire retardant / (Ogden, Utah: Intermountain Forest and Range Experiment Station, Forest Service, United States Department of Agriculture, ), by C. George, Charles E. Hardy, and Intermountain Forest and Range Experiment Station (Ogden, Utah) (page images at HathiTrust).

To determine Marsh funnel viscosity, the funnel is filled to the bottom of the screen. The funnel holds 1, cubic centimeters (cc). The time in seconds required for a quart ( cc) to flow out the bottom of the funnel is recorded as the Marsh funnel viscosity.

The Marsh Funnel Viscometer is a simple device used for routine quick measurements of fluid viscosity. It is an excellent indicator of changes in drilling fluid properties. The Marsh Funnel Viscometer is conical in shape - 6" ( mm) in diameter at the top and 12" ( mm) long with a capacity of 1, cm3.

A Marsh funnel is used for routine viscosity determinations on almost every drilling rig. Made of rugged, break-resistant plastic that resist to the temperature change deformation. Volumetric accuracy is assured.

Plastic handle provides insulation for user’s hand. A metal orifice assures accurate readings. The Marsh funnel is a simple device for measuring viscosity by observing the time it takes a known volume of liquid to flow from a cone through a short tube.

It is standardized for use by mud engineers to check the quality of drilling mud. Other cones with different geometries and orifice arrangements are called flow cones, but have the same operating principle.

In use, the funnel. The Marsh Funnel is a device that is common to every drilling rig. Details of the Marsh Funnel and receiving cup are shown in Figuresand The viscosity is reported in seconds allowed to flow out of the funnel. API specifications call for ml and one quart () ml out. For API water at 70 F + oF = 26 + sec.

The Marsh Funnel. Revised marsh funnel table for measuring viscosity of fire retardant / Charles W. George and Charles E. Hardy. Viscosity-ratio measurements made with capillary viscometers exploit the accurate values of the viscosity of helium resulting from ab initio calculations.

Accurate values of the argon-to-helium viscosity ratio are now used for primary acoustic thermometry and the most accurate redeterminations of the Boltzmann : Robert F. Berg, Eric F. May, Michael R. Moldover. Viscosity is an important property of fluid foods.

It is defined as the internal friction of a liquid or its ability to resist flow. The internal friction in a fluid can be easily demonstrated by observing a liquid that has been vigorously stirred to create a vortex.

Once the stirring has stopped the speed of the vortex is gradually reduced and.