JJG 688-2007
Vehicle Exhaust Emissions Measuring Instruments (English Version)

Standard No.

JJG 688-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

National Metrological Verification Regulations of the People's Republic of China

Status

Be replaced 2018-05

Replace By

JJG 688-2017

Latest

JJG 688-2017

Replace

JJG 688-1990

Scope

This procedure applies to the initial calibration, subsequent calibration and in-use inspection of automobile emission gas testers (hereinafter referred to as testers). Relevant items of type evaluation tests can be implemented with reference to this procedure.

JJG 688-2007 Referenced Document

• GB 18285-2005 Limits and measurement methods for exhaust pollutants from vehicles equipped ignition engine under two-speed idle conditions and simple driving mode conditions
• ISO 3930:2000 Instruments for measuring vehicle exhaust emissions
• JJF 1001-1998 General Terms in Metrology and Their Definitions
• JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement

JJG 688-2007 history

• 2018 JJG 688-2017 Verification Regulations for Automobile Emission Gas Tester
• 2007 JJG 688-2007 Vehicle Exhaust Emissions Measuring Instruments
• 1990 JJG 688-1990 Verification Regulation of Vehicle Exhaust Emission Measuring Instruments