ASTM-E74 › Historical Revision Information
Standard Practice of Calibration of Force-Measuring Instruments for Verifying the Force Indication of Testing Machines
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Scope
1.1 The purpose of this practice is to specify procedures for the calibration of force-measuring instruments. Procedures are included for the following types of instruments:
1.1.1 Elastic force-measuring instruments, and
1.1.2 Force-multiplying systems, such as balances and small platform scales.
Note 1—Verification by deadweight loading is also an acceptable method of verifying the force indication of a testing machine. Tolerances for weights for this purpose are given in Practices E 4; methods for calibration of the weights are given in NIST Technical Note 577, Methods of Calibrating Weights for Piston Gages.
1.2 The values stated in SI units are to be regarded as the standard. Other metric and inch-pound values are regarded as equivalent when required.
1.3 This practice is intended for the calibration of static force measuring instruments. It is not applicable for dynamic or high speed force calibrations, nor can the results of calibrations performed in accordance with this practice be assumed valid for dynamic or high speed force measurements.
1.4 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.
Keywords
force standard; load cell; proving ring; testing machine; ICS Number Code 17.100 (Measurement of force, weight and pressure)
To find similar documents by ASTM Volume:
03.01 (Metals -- Mechanical Testing; Elevated and Low-Temperature Tests; Metallography)
To find similar documents by classification:
17.100 (Measurement of force, weight and pressure Including measuring and weighing instruments)
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Document Number
ASTM-E74-91
Revision Level
1991 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Jan. 22, 1991
Document Type
Practice
Page Count
8 pages
Committee Number
E28.01