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JJF 1686-2018 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 1686-2018: Calibration Specification for Pulse Counters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1686-2018	419	Add to Cart	4 days	Calibration Specification for Pulse Counters	Valid

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Basic data

Standard ID: JJF 1686-2018 (JJF1686-2018)
Description (Translated English): Calibration Specification for Pulse Counters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A57
Word Count Estimation: 18,125
Date of Issue: 2018-02-27
Date of Implementation: 2018-05-27
Regulation (derived from): AQSIQ Announcement No. 26 of 2018
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine

JJF 1686-2018: Calibration Specification for Pulse Counters

---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 Pulse Counters National Metrology Technical Specification of the People's Republic Pulse counter calibration specification Published on.2018-02-27 2018-05-27 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Pulse counter calibration specification PulseCounters Focal Point. National Time Frequency Measurement Technical Committee Main drafting unit. Jiangsu Institute of Metrology Shanghai Institute of Metrology and Testing Technology Participated in the drafting unit. Chongqing Institute of Metrology and Quality Inspection This specification entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this specification. Jin Rong (Jiangsu Institute of Metrology) Dong Lian (Shanghai Institute of Metrology and Testing Technology) Wu Jun (Jiangsu Institute of Metrology) Participate in the drafters. Luo Hao (Chongqing Institute of Metrology and Quality Inspection) Li Lin (Jiangsu Institute of Metrology) Zhu Guijun (Chongqing Metrology Quality Inspection Institute) Liu Qihua (Shanghai Institute of Metrology and Testing Technology)

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Pulse Count (1) 4 Overview (1) 5 Measurement characteristics (2) 5.1 periodic signal pulse counter (2) 5.2 Aperiodic Single Pulse Counter (2) 5.3 Aperiodic Switch Counter (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Measurement standards and other equipment (2) 7 Calibration items and calibration methods (2) 7.1 Calibration Project (2) 7.2 Calibration method (3) 7.2.1 Appearance and normality check (3) 7.2.2 Periodic Signal Pulse Counter (3) 7.2.3 Aperiodic single pulse count error (4) 7.2.4 Non-periodic switching count error (4) 8 calibration results (5) 9 re-interval time interval (5) Appendix A Calibration Original Record Data Page Format (6) Appendix B Calibration Certificate Page Format (8) Appendix C Example of Measurement Uncertainty Evaluation (10)

Introduction

JJF 1001-2011 "General Measurement Terms and Definitions", JJF 1059.1-2012 "Measurement Uncertainty Evaluation and Representation, JJF 1071-2010 "National Metrology Calibration Specification Writing Rules" together constitute the development of this calibration specification The basic series of specifications. This specification is the first release. Pulse counter calibration specification

1 Scope

This specification applies to electrical signals or null contact signals that can respond to 30mV~10V input and the number of pulses. Calibration of the measured pulse counter and pulse counting module.

2 reference files

Calibration procedure for quartz crystal oscillator in JJG180 electronic measuring instrument For dated references, only the dated version applies to this specification; for undated references, The latest version (including all amendments) applies to this specification.

3 terms and units of measure

3.1 pulse count pulsecount Counting the number of input electrical signals or null contact signals, the minimum resolution of pulse counting is generally Is 1, dimensionless.

4 Overview

The pulse counter is an electronic measuring instrument that responds to pulse signals and performs counting measurements. Periodic signal pulse counter for electrical signals (sine waves, square waves, etc.) and pulse count measurement; response aperiodic Single-pulse signal and pulse count measurement called non-periodic single-pulse counter; response to non-periodic switching signal The non-periodic switching counter of the line pulse count measurement. Pulse counters are typically triggered primarily by internal levels The road, sampling decision circuit, counting circuit and display circuit are used to measure the pulse value. The working principle is shown in Figure 1. Shown. The pulse counting module directly or indirectly reflects the relevant parameters of the signal transmission working system according to the pulse number of the measurement signal The number, for example, derives the mechanical speed of the speed system, the fluid capacity of the flow metering system, etc. based on the number of signal pulses. pulse The working mode of the counting module is shown in Figure 2. Figure 1 Schematic diagram of the working principle of the pulse counter Figure 2 Pulse counting module measurement working mode ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1686-2018_English be delivered?

Answer: Upon your order, we will start to translate JJF 1686-2018_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 1686-2018_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1686-2018_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.