ASME B107.29-2005 pdf download

ASME B107.29-2005 pdf download.Electronic Tester, Hand Torque Tools.
1 SCOPE 4 DEFINITIONS This Standard provides performance and safety requirements for electronic torque testers used for check- ing manually operated hand-held torque wrenches and screwdrivers. accuracy: the difference between a known applied torque and the torque displayed on the electronic indicator mea- sured in percentage of the known applied torque. first peak: the maximum torque value just prior to the torque drop-off, which, on Type II torque wrenches, 2 CLASSIFICATION Type I: Torque tester with torque-generating unit Class 1 : Precision accuracy ±0.25% of indicated value Class 2: Moderate accuracy ±0.50% of indicated value Class 3: Standard accuracy ±1 % of indicated value Type II: Torque tester with hand actuation Class 1 : Precision accuracy ±0.25% of indicated value Class 2: Moderate accuracy ±0.50% of indicated value Class 3: Standard accuracy ±1 % of indicated occurs as the wrench begins its momentary reduction in torque. peak: the maximum torque value reached during the process of applying the load to the wrench. rated capacity: the maximum intended torque the user shall measure or apply. resolution: the precision of a torque reading. track: continuous readout of torque applied at any moment. usable range of the transducer: the range to which the accuracy requirements of para. 5.2 are applied. value 5 REQUIREMENTS 3 REFERENCES 5.1 Design The following documents are referenced in this Stan- dard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the documents indicated below. ASME B1 07.4-1 995, Driving and Spindle Ends for Porta- ble Hand, Impact, Air, and Electric Tools (Percussion Tools Excluded) ASME B1 07.1 4M-1 994, Hand Torque Tools ASME B1 07.28M-1 997, Electronic Torque Instruments Publisher: The American Society of Mechanical Engi- neers (ASME), Three Park Avenue, New York, NY 1 001 6-5990; Order Department: 22 Law Drive, P.O. Box 2300, Fairfield, NJ 07007-2300 Guide to Hand Tools — Selection, Safety Tips, Proper Use, and Care Publisher: Hand Tools Institute (HTI), 25 North Broad- way, Tarrytown, NY 1 0591 Copyright ASME International Provided by IHS under license with ASME 1 The tester shall be designed for checking clockwise and counterclockwise hand torque tools conforming to ASME B1 07.1 4M and ASME B1 07.28M. The tester shall consist of the following components: 5.1.1 Electronic Torque Indicator. The tester shall have an electronic digital indicator. The digital indicator must be easily viewed and accessed by the operator. Indica- tions shall be provided on the panel of the digital indica- tor to indicate, at a minimum, the following conditions: (a) power on (b) torque units of measure (c) operating modes (1 ) first peak (2) peak (3) track (d) clockwise or counterclockwise operation 5.1.2 Controls. All controls shall be readily accessible and clearly identified. 5.1.3 Overload Indication. A visual and/or audible overload indication shall be provided.
5.1.4 Calibration Adjustment. A means shall be pro- vided to calibrate the equipment or change any calibra- tion factor or other correction data stored in the memory of the equipment. 5.1.5 Torque Units of Measure. The tester shall be capable of displaying a minimum of two or more torque units of measure. Selection of the applicable unit shall be via a switch on the front panel. 5.1.6 Torque Transducers. Multiple torque transduc- ers may be used to cover the range of the torque tester. Transducers shall be interchangeable. The usable range of the transducer shall be clearly indicated on the trans- ducer ’s label. The drives on the transducer and/or adapter shall conform to ASME B1 07.4M. 5.1.7 Torque-Generating Unit. The Type I tester shall have a torque-generating unit. The torque-generating unit’s sensitivity must be commensurate with the resolu- tion of the indicator. During testing, the application of the load on the handle shall be applied in accordance with the test procedure specified in ASME B1 07.28M and ASME B1 07.1 4M.