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Significance and Use
4.1 Testing machines that apply and indicate torque are in general use in many industries. Practice has been written to provide a practice for the torque verification of these machines. A necessary element in Practice is the use of devices whose torque characteristics are known to be metrologically traceable to the International System of Units (SI). Practice describes how these devices are to be calibrated. The procedures are useful to users of testing machines, manufacturers and providers of torque measuring instruments, calibration laboratories that provide calibration services and documents of metrological traceability, and service organizations using devices to verify testing machines.
1.1 The purpose of this practice is to specify the procedure for the calibration of torque transducers.
Note 1: Verification by deadweight and a lever arm is an acceptable method of verifying the torque indication of a testing machine. Tolerances for weights used are tabulated in Practice ; 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 standard. Other metric and inch-pound values are regarded as equivalent when required.
1.3 This practice is intended for the calibration of static torque measuring instruments. The practice is not applicable for dynamic or high-speed torque calibrations or measurements, nor can the results of calibrations performed in accordance with this practice be assumed valid for dynamic or high speed torque 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E2624 Practice for Torque Calibration of Testing Machines and Devices
ASME StandardB46.1 Surface Texture Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://www.asme.org.
BIPM StandardJCGM 200 International vocabulary of metrology-Basic and general concepts and associated terms (VIM)
ICS Number Code 19.100 (Non-destructive testing)
UNSPSC Code 41112100(Transducers)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E2428-15a, Standard Practice for Calibration and Verification of Torque Transducers, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top