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JJG 688-2025 Active
JJG 688-2025 Verification Regulation of Vehicle Exhaust Emissions Measuring Instruments
Abstract
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of automotive emission gas testers (hereinafter referred to as testers). The testers are used to measure the volume fraction of one or more components. The minimum measurement range of the tester for the volume fraction of different components shall meet the following requirements: HC: (0～2,000)×10-6, CO: (0～500)×10-2, CO2: (0～160)×10-2, NO: (0～4,000)×10-6, O2: (0～210)×10-2, NO2: (0～400)×10-6.
General Product Information
| Document Type | National Metrology and Inspection Regulations JJG |
|---|---|
| Standard Status | Active |
| Standard Code | JJG 688-2025 |
| Implement Date | 2026-03-11 |
Price
$ 54.00
Subtotal
$ 54.00
Tax
$ 0.00
Order Total (incl. tax)
$ 54.00