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JJF 1360-2012 English PDF

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JJF 1360-2012: Calibration Specification for Coast-down Time Testers
Status: Valid

JJF 1360: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJF 1360-2012English419 Add to Cart 3 days [Need to translate] Calibration Specification for Coast-down Time Testers Valid JJF 1360-2012
JJF 1360-1990English199 Add to Cart 2 days [Need to translate] Operating Technical Norm for Alternating Current Primary Standard from 40Hz to 15000Hz Obsolete JJF 1360-1990

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Standard similar to JJF 1360-2012

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Basic data

Standard ID JJF 1360-2012 (JJF1360-2012)
Description (Translated English) Calibration Specification for Coast-down Time Testers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A57
Classification of International Standard 17.080
Word Count Estimation 18,199
Quoted Standard JJF 1001-2011; JJF 1059-1999; JJF 1180-2007; JJF 1221-2009; GB 3102.1-1993
Regulation (derived from) AQSIQ Announcement No. 132 of 2012
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to automobile exhaust emission testing on a chassis dynamometer calibration taxiing time detector calibration.

JJF 1360-2012: Calibration Specification for Coast-down Time Testers

---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 Coast-down Time Testers People's Republic of China National Metrology Technical Specifications Coasting time detector calibration specification Issued on. 2012-09-03 2012-12-03 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Coasting time detector calibration specification Focal point. the National Commission on Time and Frequency Measurement Technology Main drafting unit. Henan Institute of Metrology Participated in the drafting unit. Shijiazhuang Huayan Transportation Technology Co., Ltd. This specification entrust national time and frequency measurement technical committee responsible for the interpretation The main drafters of this specification. Zhu Weimin (Henan Institute of Metrology) Cui Guang new (Henan Institute of Metrology) Drafters participate. Chen Nanfeng (Shijiazhuang Huayan Transportation Technology Co., Ltd.) Wei-ping (Henan Institute of Metrology)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 4 Overview (1) 5 Metrological characteristics (1) Speed measurement error 5.1 (1) 5.2 coasting time measurement error (2) 5.3 Sampler rotating wheel diameter (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 Calibration with standard equipment and ancillary 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) 9 Recalibration interval (5) Appendix A recommended calibration certificate contents (6) Appendix B Uncertainty evaluation calibration results of examples (8) Appendix C sweep signal generator sweep time measurement method (12)

Introduction

This specification based JJF 1071-2010 "National Calibration Specifications writing rules" establishment. The specification for the first time to develop. Coasting time detector calibration specification

1 Scope

This instruction applies to automobile exhaust pollutant detection chassis dynamometer calibration coasting time detector calibration. 2. References This specification refers to the following documents. JJF 1001-2011 common measurement terms and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF 1180-2007 time and frequency measurement terminology and definitions JJF 1221-2009 vehicle exhaust detection chassis dynamometer calibration specification GB 3102.1-93 space and time and the amount of units For dated references, only the dated edition applies to this specification; undated references The latest version (including any amendments) applies to this specification.

3 terminology and units of measurement

This specification uses the terms and definitions of "universal metering Terms and Definitions" related JJF 1001-2011, Quantities and units GB 3102.1-93 "space and time and the amount of units" in provisions and the following terms and definitions. 3.1 coasting time coast-downtime In the automobile exhaust pollutant detection dynamometer test taxi chassis, under the specified load conditions, the car exhaust Pollutant detection roller chassis dynamometer speed glide from one to another change in the speed of the time spent. NOTE. coasting time is divided into theoretical and practical coasting time measured coasting time.

4 Overview

Coasting time tester is mainly used for automobile exhaust pollutant detection glide test chassis dynamometer coasting time Measurement and comparison of theoretical and glide through the time of vehicle exhaust detection of basic chassis dynamometer inertia The amount of time taxiing constant load, variable load taxiing time and other parameters to be calibrated. Coasting time detector consists of contact speed sampling and data processing control part. Contact speed mining Sampler of rotating wheel with photoelectric sensor, using the contact-type sampler reliable contact in wheel rotation is detected Automobile exhaust pollutant detection on a roller chassis dynamometer, vehicle exhaust detection chassis dynamometer rollers turn When moving, by means of sliding friction drive time detector contact speed sampler rotating wheel rotation, so as to drive the light Electric rotary encoder. Signal frequency pulses emitted by measuring the optical encoder to calculate the vehicle exhaust detection With the speed chassis dynamometer rollers can be recorded at different speeds used for the test interval taxiing time is coasting time.

5 Metrological characteristics

5.1 speed measurement error

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