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JJF 1157-2006 English PDF

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JJF 1157-2006: Calibration Specification for Measuring Amplifiers
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PDF similar to JJF 1157-2006


Standard similar to JJF 1157-2006

GB/T 3222.2   GB/T 3222.1   JJG 188   JJF 2012   JJG 1166   JJG 1157   

Basic data

Standard ID JJF 1157-2006 (JJF1157-2006)
Description (Translated English) Calibration Specification for Measuring Amplifiers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A59
Classification of International Standard 17.140
Word Count Estimation 38,317
Date of Issue 9/6/2006
Date of Implementation 2006-12-06
Quoted Standard GB/T 3102.5-1993; GB/T 3102.7-1993; JJF 1001-1998; JJF 1034-2005; JJF 1059-1999; JJG 188-2002
Regulation (derived from) China Measurement 2006. 11
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to acoustics, vibration measurements with a measuring amplifier calibration.

JJF 1157-2006: Calibration Specification for Measuring Amplifiers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Measuring Amplifiers National Metrology Technical Specification of the People's Republic Measuring amplifier calibration specification Released on.2006-09-06 Implementation of.2006-12-06 The General Administration of Quality Supervision, Inspection and Quarantine issued Measuring amplifier calibration specification forMeasuringAmp Lifiers This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 6,.2006, and since.2006 It will take effect on December 6th. Focal Point. National Acoustic Metrology Technical Committee Drafted by. Hengyang Hengyi Electric Co., Ltd. China Institute of Metrology CSIC Research Institute No. 701 The Third Research Institute of China Electronics Technology Group Corporation This specification is interpreted by the National Acoustic Metrology Technical Committee. Drafters of this specification. Liu Xiangheng (Hengyang Hengyi Electric Co., Ltd.) Chen Jianlin (China Institute of Metrology) Liu Fangxiong (China Shipbuilding Industry Corporation Seventy-one Institute) Zhang Jing (Hengyang Hengyi Electric Co., Ltd.) Pan Yuewu (The Third Institute of China Electronics Technology Group Corporation) Tang Jun (September Institute of China Shipbuilding Industry Corporation) Zhu Chuanhuan (September Institute of China Shipbuilding Industry Corporation)

table of Contents

1 Scope (1) 2 Citations (1) 3 terms and units of measurement (1) 4 Overview (1) 5 Measurement characteristics (1) 5.1 Machine sensitivity (1) 5.2 Frequency weighting (1) 5.3 Linear Frequency Response (3) 5.4 High and low pass filter characteristics (3) 5.5 Indicator Indexing Error (3) 5.6 Input attenuator error (3) 5.7 Output Attenuator Error (3) 5.8 Local noise (4) 5.9 Time weighting (4) 5.10 猝 pronunciation response (4) 5.11 RMS Characteristics (4) 5.12 Level linearity of electrical output (4) 5.13 Harmonic Distortion (4) 5.14 Internal Reference Signal (4) 5.15 Polarization voltage (4) 6 Calibration conditions (4) 6.1 Environmental conditions (4) 6.2 Standard and other equipment (5) 7 Calibration items and calibration methods (5) 7.1 Calibration Project (5) 7.2 Calibration method (6) 8 Calibration result expression (13) 8.1 Calibration Record (13) 8.2 Calibration Data Processing (13) 8.3 Calibration Certificate (14) 8.4 Measurement uncertainty of calibration results (14) 9 re-study interval (15) Appendix A Contents of Calibration Record (16) Appendix B Contents of the calibration certificate (20) Appendix C Example of Evaluation of Uncertainty (24) Measuring amplifier calibration specification

1 Scope

This specification applies to the calibration of measuring amplifiers for acoustic and vibration measurements.

2 Citations

This specification refers to the following documents GB/T 3102.5-1993 "Electrical and magnetic quantities and units" GB/T 3102.7-1993 "Amount and unit of acoustics" JJF 1001-1998 General Terms and Definitions JJF 1034-2005 "Acoustic Metrology Terms and Definitions" JJF 1059-1999 "Measurement Uncertainty Evaluation and Representation" JJG188-2002 "Sound Level Meter Verification Regulations" Use of this specification should be done with the current valid version of the above cited documents.

3 terms and units of measure

This specification uses the terms and definitions in JJF 1001-1998, JJF 1034-2005, and JJG188-2002. This specification uses the quantities and units specified in GB/T 3102.5-1993 and GB/T 3102.7-1993.

4 Overview

The measuring amplifier is a wide-range, low-noise meter with specified time weighting, frequency weighting and voltage indication functions. Device. It is mainly used for engineering measurement of acoustics and vibration, as well as verification and calibration of acoustic and vibration measuring instruments. Usually composed of amplifiers, attenuators, frequency weighting, time weighting, filters, detectors, and indicators.

5 Measurement characteristics

5.1 Machine sensitivity The measurement amplifier's indication of a 50mV, 1kHz sinusoidal electrical signal should generally be (94.0 ± 0.2) dB. 1 During the calibration, the change in sensitivity of the whole machine should generally not exceed ±0.02dB. 5.2 Frequency weighting The measurement amplifier should have A weighting and can also have C weighting. Measuring amplifier's A-weighting and C-weighting and The tolerances are shown in Table 1. 1 “General” in this chapter means that the measurement performance indicators mentioned are for reference only.

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