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JJF 1216-2009 English PDFStandard Briefing:Stadard ID: JJF 1216-2009Stadard Title: Calibration Specification for Sonic Belt Tension Meters Price (USD): 369 Lead day (Deliver True-PDF English version): 3 days Status: Valid Evolution and Historical Versions:
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Contents, Scope, and Excerpt:JJF 1216-2009 Calibration Specification for Sonic Belt Tension Meters People's Republic of China National Metrology Technical Specifications Sonic belt tension meter calibration formula specification Posted 2009-05-18 2009-08-18 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Sonic belt tension meter calibration formula specification This specification by the State Administration of Quality Supervision, Inspection and Quarantine on May 18, 2009 approved, and since 2009 Since August 18 implementation. Focal point. the National Committee of the acoustic measurement technology Drafting. Shanghai Institute of Measurement and Testing Shaanxi Normal University Institute of Applied Acoustics This specification by the responsible National Technical Committee acoustic measurement interpretation The main drafters of this specification. An Zhaoliang (Shanghai Institute of Measurement and Testing) Sheng-lift (Applied Acoustics Institute, Shaanxi Normal University) Drafters participate. Zhang Guiren (Shanghai Institute of Measurement and Testing) Zhou Zi Wei (Shanghai Institute of Measurement and Testing) table of Contents 1 Scope (1) 2. Referenced Documents (1) 3 terminology and units of measurement (1) 4 Overview (1) 5 Metrological characteristics (1) 5.1 Frequency indication error (1) 5.2 acoustic signal sensitivity characteristics (2) 5.3 tension measured and calculated values of deviation (2) Calibration Condition 6 (2) 6.1 Calibration environmental conditions (2) 6.2 Standard device and main equipment (2) 7 calibration items and calibration methods (2) 7.1 calibration items (2) 7.2 Calibration Method (2) 8 calibration results expression (4) 8.1 Calibration Data Processing (4) 8.2 calibration certificate (4) 8.3 Calibration results Measurement Uncertainty (4) 9 Recalibration interval (4) Appendix A calibration certificate contents (5) Appendix B Calibration Uncertainty Evaluation Examples (7) Appendix C sonic tension meter use applicability (9) Sonic belt tension meter calibration formula specificationScopeThis specification is applicable for measuring sonic belt tension gauge static belt tension (hereinafter referred to as sonic tension meter) of calibration. 2 Citations This specification refers to the following documents. JJG188-2002 Sound Level Meter JJG455-2000 work dynamometer JJF 1001-1998 common measurement terms and definitions JJF 1034-2005 acoustic measurement terminology and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement GB/T 3102.7-1993 Quantities and units of acoustics When using this specification it should be noted that using the currently valid version of the documents cited. 3 terminology and units of measurement This specification uses JJF 1034-2005 the relevant terminology and definitions as well as GB/T 3102.7-1993 in Quantities and units specified. 4 Overview Sonic tension meter is acoustically measured non-contact transmission dynamometer with static tension, which works through Belt tension after too static state by the impact of the natural vibration frequency measurement calculation processing to obtain the belt tension. Sonic tension meter consists of microphone, frequency measurement unit, a control unit, a display unit and some other calculation software constitute. In order to facilitate measurements of most sonic tension meter comes with an extension rod can be bent. Sonic tension meter according to the measured frequency, according to the following formula to calculate the belt tension. T = 4 × M × W × S2 × f2 (1) Where. T --- belt tension, N; M --- mass per unit length per unit width of the belt, kg/m2; W --- belt width, m; S --- two pulleys span, m; f --- the natural vibration frequencies (baseband), Hz. When testing, M, W, S entered manually by the tester. 5 Metrological characteristics 5.1 Frequency indication error ...... |