ASTM D8092-22
(Test Method)Standard Test Method for Field Determination of Kinematic Viscosity Using a Microchannel Viscometer
Standard Test Method for Field Determination of Kinematic Viscosity Using a Microchannel Viscometer
SIGNIFICANCE AND USE
5.1 The significance of this test method is that it provides a means for a reliable field determination of kinematic viscosity at 40 °C without requiring solvents or chemicals for cleaning. Field use implies that the fluid may be very opaque, such as an in-service engine oil. The device may be cleaned with a disposable lint-free oil-absorbent material such as a clean cotton shop rag, and requires only 60 µL of sample for operation. As such the device provides a unique service to a range of industries where it is difficult or undesirable to obtain chemicals of any sort in order to determine the kinematic viscosity of their fluid of interest. Examples of such industries include many marine-based systems where a laboratory does not exist on-board, mines where equipment is needed for on-the-spot determination of asset viscosity, and large industrial plants where a walk-around inspection of oil sumps greatly increases efficiency. By using this test method, one can serve these crucial use-cases where a direct, immediate measure of kinematic viscosity at 40 °C may otherwise be difficult to obtain.
SCOPE
1.1 This test method describes a means for measuring the kinematic viscosity of transparent and opaque liquids such as new and in-service lubricating oils using a miniature microchannel viscometer at 40 °C in the range of 12.9 mm2/s to 174 mm2/s
1.2 The precision has only been determined for those materials and viscosity ranges, as indicated in Section 17 on Precision and Bias.
1.3 This test method is specifically tailored to obtaining a rapid, direct, temperature- stabilized measure of the kinematic viscosity of new and in-service lubricants in the field in real- time without the use of solvents or chemical cleaning agents. The measurement takes place at 40 °C and kinematic viscosity is directly obtained. No temperature extrapolations or density corrections are necessary.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 9 on Hazards.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8092 − 22
Standard Test Method for
Field Determination of Kinematic Viscosity Using a
1
Microchannel Viscometer
This standard is issued under the fixed designation D8092; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method describes a means for measuring the
D445 Test Method for Kinematic Viscosity of Transparent
kinematic viscosity of transparent and opaque liquids such as
and Opaque Liquids (and Calculation of Dynamic Viscos-
new and in-service lubricating oils using a miniature micro-
2
ity)
channel viscometer at 40 °C in the range of 12.9 mm /s to
2 D2162 Practice for Basic Calibration of Master Viscometers
174 mm /s
and Viscosity Oil Standards
1.2 The precision has only been determined for those
D4057 Practice for Manual Sampling of Petroleum and
materials and viscosity ranges, as indicated in Section 17 on
Petroleum Products
Precision and Bias. D4175 Terminology Relating to Petroleum Products, Liquid
Fuels, and Lubricants
1.3 This test method is specifically tailored to obtaining a
D5854 Practice for Mixing and Handling of Liquid Samples
rapid, direct, temperature- stabilized measure of the kinematic
of Petroleum and Petroleum Products
viscosity of new and in-service lubricants in the field in real-
D6708 Practice for StatisticalAssessment and Improvement
time without the use of solvents or chemical cleaning agents.
of Expected Agreement Between Two Test Methods that
The measurement takes place at 40 °C and kinematic viscosity
Purport to Measure the Same Property of a Material
is directly obtained. No temperature extrapolations or density
3
2.2 ISO Standard:
corrections are necessary.
ISO/IEC 17025 General Requirements for the Competence
1.4 The values stated in SI units are to be regarded as
of Testing and Calibration Laboratories
standard. No other units of measurement are included in this
standard.
3. Terminology
3.1 Definitions:
1.5 This standard does not purport to address all of the
3.1.1 For definitions of terms used in this test method, refer
safety concerns, if any, associated with its use. It is the
to Terminology D4175.
responsibility of the user of this standard to establish appro-
3.2 Definitions of Terms Specific to This Standard:
priate safety, health, and environmental practices and deter-
3.2.1 Hele-Shaw cell, n—a liquid cell wherein Stokes flow
mine the applicability of regulatory limitations prior to use.
is present between two parallel plates.
Some specific hazards statements are given in Section 9 on
Hazards.
3.2.1.1 Discussion—The unbounded microchannel capillary
1.6 This international standard was developed in accor-
acts as a Hele-Shaw cell in this test method, which enables a
dance with internationally recognized principles on standard-
simple relationship between kinematic viscosity and fluid
ization established in the Decision on Principles for the
velocity to be established.
Development of International Standards, Guides and Recom- 3.2.2 loading funnel, n—the cavity in Fig. 1 that the liquid
mendations issued by the World Trade Organization Technical is placed into upon sample introduction; the sample then
Barriers to Trade (TBT) Committee. travels out of this funnel and enters the capillary.
1 2
This test method is under the jurisdiction of ASTM Committee D02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee D02.07 on Flow Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2022. Published December 2022. Originally the ASTM website.
3
approved in 2017. Last previous edition approved in 2017 as D8092 – 17. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D8092-22. 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8092 − 22
FIG. 1 Miniature Capillary Viscometer Schematic
3.2.3 miniature capillary viscometer, n—a viscometer, as 4. Summary of Test Method
shown in Fig. 1, which utilizes an unbo
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D8092 − 17 D8092 − 22
Standard Test Method for
Field Determination of Kinematic Viscosity Using a
1
Microchannel Viscometer
This standard is issued under the fixed designation D8092; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This test method describes a means for measuring the kinematic viscosity of transparent and opaque liquids such as new and
2 2
in-service lubricating oils using a miniature microchannel viscometer at 40 °C in the range of 12.9 mm /s to 174 mm /s
1.2 The precision has only been determined for those materials and viscosity ranges, as indicated in Section 17 on Precision and
Bias.
1.3 This test method is specifically tailored to obtaining a rapid, direct, temperature- stabilized measure of the kinematic viscosity
of new and in-service lubricants in the field in real- time without the use of solvents or chemical cleaning agents. The measurement
takes place at 40 °C and kinematic viscosity is directly obtained. No temperature extrapolations or density corrections are
necessary.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 9 on Hazards.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D2162 Practice for Basic Calibration of Master Viscometers and Viscosity Oil Standards
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport
to Measure the Same Property of a Material
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.07.0A on Newtonian Viscosity.
Current edition approved May 1, 2017Dec. 1, 2022. Published May 2017December 2022. Originally approved in 2017. Last previous edition approved in 2017 as
D8092 – 17. DOI: 10.1520/D8092-17.10.1520/D8092-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8092 − 22
3
2.2 ISO Standard:
ISO/IEC 17025 General Requirements for the Competence of Testing and Calibration Laboratories
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology D4175.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 Hele-Shaw cell, n—a liquid cell wherein Stokes flow is present between two parallel plates.
3.2.1.1 Discussion—
The unbounded microchannel capillary acts as a Hele-Shaw cell in this test method, which enables a simple relationship between
kinematic viscosity and fluid velocity to be established.
3.2.2 loading funnel, n—the cavity in Fig. 1 that the liquid is placed into upon sample introduction; the sample then travels out
of this funnel and enters the capillary.
3.2.3 miniature capillary viscometer, n—a viscometer, as shown in Fig. 1, which utilizes an unbounded microchannel ca
...
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