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JJF 1852-2020 English PDF

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US$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1852-2020: Calibration Specification for Distortion Meters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1852-2020	419	Add to Cart	4 days	Calibration Specification for Distortion Meters	Valid

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Basic data

Standard ID: JJF 1852-2020 (JJF1852-2020)
Description (Translated English): Calibration Specification for Distortion Meters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A56
Word Count Estimation: 18,118
Date of Issue: 2020-07-02
Date of Implementation: 2021-01-02
Regulation (derived from): Announcement No. 29 (2020) of the State Administration for Market Regulation
Issuing agency(ies): State Administration for Market Regulation

JJF 1852-2020: Calibration Specification for Distortion Meters

---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.
(Distortion measuring instrument calibration specification) National Metrology Technical Specifications of the People's Republic of China Calibration Specification for Distortion Measuring Instrument 2020-07-02 released 2021-01-02 implementation Issued by the State Administration for Market Regulation Calibration Specification for Distortion Measuring Instrument Replace JJG251-1997 Focal point. National Radio Metrology Technical Committee Main drafting unit. Zhejiang Institute of Metrology Shanghai Institute of Metrology and Testing Technology Participating in the drafting. Hangzhou Quality and Technical Supervision and Testing Institute This specification entrusts the National Radio Measurement Technical Committee to be responsible for the interpretation The main drafters of this specification. Gu Xiazhen (Zhejiang Institute of Metrology) Chen Jing (Zhejiang Institute of Metrology) Xu Zhaohui (Shanghai Institute of Metrology and Testing Technology) Participating drafters. Zhang Heping (Zhejiang Institute of Metrology) Xu Jun (Zhejiang Institute of Metrology) Wang Yili (Shanghai Institute of Metrology and Testing Technology) Gu Guofeng (Hangzhou Quality and Technical Supervision and Inspection Institute)

Introduction (Ⅱ) 1 Scope (1) 2 Overview (1) 3 Measurement characteristics (1) 3.1 Unbalanced voltmeter (1) 3.2 Distortion measurement (1) 3.3 Residual distortion(1) 4 Calibration conditions (1) 4.1 Environmental conditions (1) 4.2 Calibration equipment (1) 5 Calibration items and calibration methods (2) 5.1 Appearance and working normality inspection (2) 5.2 Unbalanced voltmeter voltage (2) 5.3 Frequency response of unbalanced voltmeter (3) 5.4 Distortion (3) 5.5 Residual distortion(4) 6 Calibration result expression (4) 7 Re-calibration interval (4) Appendix A Original Record Format (5) Appendix B. Internal page format of calibration certificate (7) Appendix C Calibration Uncertainty Evaluation Examples of Major Items (9)

Introduction

This specification is based on JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications" and JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty" was compiled. This specification is a revision of JJG251-1997 "Distortion Measuring Instrument", compared with JJG251-1997, The main revisions include. ---The verification procedure is changed to the calibration specification; ---The distortion measurement range is changed from 0.1%~100% to 0.01%~100%; --- Delete the additional error items of the distortion meter voltmeter waveform; --- Delete the frequency scale error item of the distortion measuring instrument; ---Add examples of uncertainty evaluation. The previous releases of this specification are as follows. ---JJG251-1981; ---JJG251-1997. Calibration Specification for Distortion Measuring Instrument

1 Scope

This specification applies to the frequency range of 5Hz~200kHz, the distortion measurement range is 0.01%~100% distortion The calibration of the distortion measurement function module in the measurement instrument and the measurement instrument.

2 overview

The distortion measuring instrument is mainly composed of an input circuit, a level adjustment circuit, a fundamental suppression circuit, a tuning circuit, and amplifying filter. It is composed of wave circuit, level discriminating circuit, indicating circuit and so on. It is widely used in production, scientific research, measurement and other departments.

3 Metrological characteristics

3.1 Unbalanced voltmeter Voltage measurement range. 0.3mV~300V (5Hz~1MHz); Maximum allowable error. ±5% (1kHz); Frequency response. ± (6%~17%). 3.2 Distortion measurement Frequency range. 5Hz~200kHz; Distortion measurement range. 0.01%~100%; Maximum allowable error. ± (5%~40%) (relative error). 3.3 Residual distortion ≤0.003% (20Hz~10kHz); ≤0.03% (5Hz~200kHz). Note. The above technical indicators are not for eligibility judgment, only for reference.

4 Calibration conditions

4.1 Environmental conditions 4.1.1 Ambient temperature. (23±5)℃. 4.1.2 Relative humidity. ≤80%. 4.1.3 Power requirements. (220±11)V, (50±1)Hz. 4.1.4 There is no electromagnetic interference and mechanical vibration that affect the normal operation of the instrument. 4.2 Equipment for calibration 4.2.1 AC standard voltage source Frequency range. 5Hz~1MHz; Voltage range. 0.3mV~300V; Maximum allowable error. ± (1%~3%). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1852-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1852-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1852-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1852-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.