GB/T 20485.12-2008

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Method for the calibration of vibration and shock transducers - Part 12: Primary vibration calibration by the reciprocity method

振动与冲击传感器校准方法 第12部分:互易法振动绝对校准

Standard Type
GBT
ICS
17.160
CCS
J04
Status
Active
Issue Date
2008-03-03
Implementation
2008-08-01
Centralized Committee
全国机械振动、冲击与状态监测标准化技术委员会 / National Technical Committee on Mechanical Vibration, Shock and Condition Monitoring of Standardization
Issuing Authority
中华人民共和国国家质量监督检验检疫总局 / General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Catalogue

前言 → 1 范围 → 2 规范性引用文件 → 3 测量不确定度 → 4 符号 → 5 仪器设备要求 → 6 环境条件 → 7 优先选用的加速度幅值和频率值 → 8 操作步骤 → 9 灵敏度的计算 Foreword → 1 Scope → 2 Normative References → 3 Measurement Uncertainty → 4 Symbols → 5 Requirements for Instrumentation → 6 Environmental Conditions → 7 Preferred Acceleration Magnitudes and Frequencies → 8 Operating Procedure → 9 Calculation of Sensitivity

Scope

1 Scope This part of GB/T 20485 specifies the method for the absolute calibration of accelerometers using the reciprocity method. This part is applicable to the absolute calibration of accelerometers in the frequency range from 40 Hz to 5 000 Hz and the acceleration magnitude range from 10 m/s² to 100 m/s². This part also specifies the method for calibrating the phase angle (phase shift) of the complex sensitivity of accelerometers.

1 范围 GB/T 20485的本部分规定了使用互易法对加速度计进行绝对校准的方法。本部分适用于加速度计的绝对校准，频率范围为40 Hz～5 000 Hz，加速度幅值范围为10 m/s²～100 m/s²。本部分还规定了加速度计复灵敏度幅角（相移）的校准方法。

Keywords

振动传感器 (vibration transducer) 冲击传感器 (shock transducer) 校准 (calibration) 互易法 (reciprocity method) 绝对校准 (primary calibration) 灵敏度 (sensitivity) 测量不确定度 (measurement uncertainty)

Application Summary AI generated

Metrology calibration laboratories and sensor manufacturers use this standard to perform high-precision absolute calibration of accelerometers. It determines transducer sensitivity via the reciprocity method, ensuring traceability of vibration and shock measurements. This standard is critical for ensuring accuracy and comparability of vibration test data in aerospace, automotive, and mechanical engineering fields.

计量校准实验室和传感器制造商使用该标准对加速度计进行高精度绝对校准。它通过互易法确定传感器的灵敏度，确保振动和冲击测量的溯源性。该标准对于保证航空航天、汽车、机械等领域中振动测试数据的准确性和可比性至关重要。

AI Summary AI generated

GB/T 20485.12-2008, identical to ISO 16063-12:2002, specifies the absolute calibration method for accelerometers using the reciprocity method, with a frequency range extended to 40 Hz to 5000 Hz and acceleration magnitude from 10 m/s² to 100 m/s². The standard details instrumentation requirements, environmental conditions, operating procedures, and sensitivity calculation, and adds calibration of complex sensitivity phase shift and a new uncertainty calculation method. It replaces GB/T 13823.18-1997 with significant revisions in frequency range, ambient temperature, and calibration frequency selection.

GB/T 20485.12-2008等同采用ISO 16063-12:2002，规定了使用互易法对加速度计进行振动绝对校准的方法，频率范围扩展至40 Hz～5000 Hz，加速度幅值10 m/s²～100 m/s²。标准详细描述了仪器设备要求、环境条件、操作步骤及灵敏度计算，并增加了复灵敏度相移校准和新的不确定度计算方法。该标准替代了GB/T 13823.18-1997，在频率范围、环境温度、校准频率选择等方面进行了重要修订。

Key Sentences extracted from text

1.

本部分规定了使用互易法对加速度计进行绝对校准的方法。

2.

本部分适用于加速度计的绝对校准，频率范围为40 Hz～5 000 Hz，加速度幅值范围为10 m/s²～100 m/s²。

3.

本部分还规定了加速度计复灵敏度幅角（相移）的校准方法。

4.

校准环境条件中室温由20℃±5℃改为23℃±3℃。

5.

原标准中规定的频率范围40 Hz～1 250 Hz改为40 Hz～5 000 Hz，并对仪器设备要求做了相应的调整。

7.

This part of GB/T 20485 specifies the method for the absolute calibration of accelerometers using the reciprocity method.

8.

This part is applicable to the absolute calibration of accelerometers in the frequency range from 40 Hz to 5 000 Hz and the acceleration magnitude range from 10 m/s² to 100 m/s².

9.

This part also specifies the method for calibrating the phase angle (phase shift) of the complex sensitivity of accelerometers.

10.

The room temperature in the calibration environmental conditions was changed from 20℃±5℃ to 23℃±3℃.

11.

The frequency range specified in the original standard from 40 Hz to 1 250 Hz was changed to 40 Hz to 5 000 Hz, and corresponding adjustments were made to the requirements for instrumentation.

Standard Timeline

replaces GB/T 13823.18-1997

Changes from replaced version:

  • 标准名称由'互易法校准'改为'互易法振动绝对校准'
  • 频率范围由40 Hz～1 250 Hz改为40 Hz～5 000 Hz
  • 室温由20℃±5℃改为23℃±3℃
  • 校准频率的选择改为按照1/3倍频程
  • 增加了加速度计复灵敏度辐角（相移）的计算内容
  • 附录A不确定度计算采用新方法
  • 增加了第3章测量不确定度和第4章符号
  • 附录A中增加了A.1.2和A.2.2复灵敏度辐角（相移）校准的不确定度计算
  • 增加了附录B互易法理论在机电传感器校准中的应用
  • Standard name changed from 'Calibration by the reciprocity method' to 'Primary vibration calibration by the reciprocity method'
  • Frequency range changed from 40 Hz～1 250 Hz to 40 Hz～5 000 Hz
  • Room temperature changed from 20℃±5℃ to 23℃±3℃
  • Selection of calibration frequencies changed to 1/3 octave intervals
  • Added calculation of phase angle (phase shift) of accelerometer complex sensitivity
  • Adopted new method for uncertainty calculation in Annex A
  • Added Chapter 3 Measurement Uncertainty and Chapter 4 Symbols
  • Added A.1.2 and A.2.2 for uncertainty calculation of complex sensitivity phase angle (phase shift) calibration in Annex A
  • Added Annex B Application of reciprocity theory in calibration of electromechanical transducers

Related Standards

GB/T 14412-2005 Mechanical vibration and shock-Mechanical mounting of accelerometers GB/T 13823.1-2005 Methods for the calibration of vibration and shock transducers part 1:Basic concepts GB/T 6075.6-2002 Mechanical vibration--Evaluation of machine vibration by measurements on non-rotating parts--Part 6:Reciprocating machines with power ratings above 100kW GB/T 6075.5-2002 Mechanical vibration--Evaluation of machine vibration by measurements on non-rotating parts--Part 5:Machine sets in hydraulic power generating and pumping plants GB/T 6075.2-2002 Mechanical vibration--Evaluation of machine vibration by measurements on non-rotating parts--Part 2:Large land-based steam turbine generator setsin excess of 50MW GB/T 6075.4-2001 Mechanical vibration--Evaluation of machine vibration by measurementson non-rotating parts--Part 4:Gas turbine driven sets excluding aircraft derivatives GB/T 6075.3-2001 Mechanical vibration--Evaluation of machine vibration by measurements on non-rotating parts--Part 3:Industrial machines with nominal power above 15kW and nominal speeds between 120r/min and 15000r/min when measured in situ GB/T 18328-2001 Guidance for selection of vibration generator system
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.