ASTM D2983-02

Standard Test Method for Low-Temperature Viscosity of Lubricants Measured by Brookfield Viscometer

SCOPE
1.1 This test method describes the use of the Brookfield viscometer and a low-temperature bath for the determination of the low-shear-rate viscosity of lubricants. The test may operate in the viscosity range of 500 to 1 000 000 mPa·s (cP). The bath-controlled temperature is selected within the range of +5° to -40°C.
1.2 The test method uses the SI unit, milliPascal-second (mPa·s), as the unit of viscosity. (1 cP = 1 mPa·s).
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-May-2002
• ICS: 75.100 - Lubricants, industrial oils and related products
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.07 - Flow Properties

Relations

• Replaced By: ASTM D2983-02a - Standard Test Method for Low-Temperature Viscosity of Lubricants Measured by Brookfield Viscometer
• Effective Date: 10-Aug-2002

Standards Content (Sample)

An American National Standard
Designation: D 2983 – 02
Standard Test Method for
Low-Temperature Viscosity of Lubricants Measured by
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Brookfield Viscometer
This standard is issued under the fixed designation D 2983; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope standard reference fluid specified at each of several user-
specified temperatures. Reference viscosities of typical stan-
1.1 This test method describes the use of the Brookfield
dard reference fluids are listed in Appendix X2.
viscometer and a low-temperature bath for the determination of
the low-shear-rate viscosity of lubricants. The test may operate
4. Summary of Test Method
in the viscosity range of 500 to 1 000 000 mPa·s (cP). The
4.1 A lubricant fluid sample is preheated, allowed to stabi-
bath-controlled temperature is selected within the range of +5°
lize at room temperature, and then poured into a glass cell with
to –40°C.
a special spindle. The glass cell is then placed into a pre-cooled
1.2 The test method uses the SI unit, milliPascal-second
cold cabinet set at a predetermined test temperature between +5
(mPa·s), as the unit of viscosity. (1 cP = 1 mPa·s).
to –40°C for 16 h. Then a viscometer is utilized that rotates the
1.3 This standard does not purport to address all of the
specified spindle within the sample at the speed giving a
safety concerns, if any, associated with its use. It is the
maximum torque reading on the viscometer. The resulting
responsibility of the user of this standard to establish appro-
torque reading is used to calculate the viscosity of the oil.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Significance and Use
2. Referenced Documents 5.1 The low-temperature, low-shear-rate viscosity of gear
oils, automatic transmission fluids, torque and tractor fluids,
2.1 ASTM Standards:
and industrial and automotive hydraulic oils, Annex A4, are of
D 341 Standard Viscosity-Temperature Charts for Liquid
2 considerable importance to the proper operation of many
Petroleum Products
mechanical devices. Measurement of the viscometric proper-
2.2 European Procedure:
3 ties of these oils and fluids are often used to specify their
CEC L18-A-80
acceptability. This test method is used in a number of specifi-
3. Terminology cations.
5.2 This test method describes how to measure apparent
3.1 Definitions of Terms Specific to This Standard:
viscosity directly without the errors associated with either
3.1.1 apparent viscosity—the dynamic viscosity determined
interpolation or extrapolation of experimental data.
by this test method. Apparent viscosity may vary with the
spindle speed (shear rate) of the Brookfield viscometer if the
NOTE 1—Viscosity values obtained by either interpolation or extrapo-
lubricant is non-Newtonian at low temperatures. See Appendix
lation are subject to errors caused by gelation or non-Newtonian response
to rotor speed, or both. Only in the case of known Newtonian oils is
X1 for a brief explanation.
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interpolation acceptable for the purpose of calibrating the rotor and glass
3.1.2 reference viscosity —the viscosity of a Newtonian
cell. If such viscosity versus temperature plots are required, they can be
made by the procedure outlined in Annex A1.
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This test method is under the jurisdiction of ASTM Committee D02 on
6. Apparatus
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
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D02.07 on Flow Properties.
6.1 Brookfield Viscometer —Analog Model LVT or more
Current edition approved May 10, 2002. Published August 2002. Originally
recent digital models (for example, LVDV-II+) are required.
published as D 2983–71T. Last previous edition D 2983–01.
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Annual Book of ASTM Standards, Vol 05.01.
3
Available from CEC, Mandou Plaza-25th Floor, B-1210 Brussells, Belgium.
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The sole source of supply of the Standard Newtonian Brookfield viscosity The sole source of supply of the Brookfield viscometer and accessories known
reference fluids known to the committee at this time is Cannon Instrument Co., Post to the committee at this time is Brookfield Engineering Laboratories, Inc.,
Office Box 16, State College, PA 16801. If you are aware of alternative suppliers, Stoughton, MA 02072. If you are aware of alternative suppliers, please provide this
please provide this information to ASTM International Headquarters. Your com- information to ASTM International Headquarters. Your comments will receive
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ments will receive careful consideration at a meeting of the responsible technical careful consideration at a meeting of the responsible technical committee , which
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committee , which you may attend. you may attend.
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