This Regulation is applicable to the type evaluation, initial verification, subsequent verification and in-use inspection of ultrasonic flowmeters for closed pipes (hereinafter referred to as flowmeters), which takes time difference method as the principle. This Regulation is not applicable to the verification of ultrasonic flow measuring instrument in open channels and closed conduits.
Basic Data
Standard ID
JJG 1030-2007 (JJG1030-2007)
Description (Translated English)
Ultrasonic Flowmeters
Sector / Industry
Metrology and Measurement Industry Standard
Classification of Chinese Standard
A53
Classification of International Standard
17.120
Word Count Estimation
30,389
Date of Issue
2007-08-21
Date of Implementation
2007-11-21
Older Standard (superseded by this standard)
JJG 198-1994
Quoted Standard
AQSIQ Announcement No. 142 of 2007
Regulation (derived from)
AQSIQ Announcement No. 142 of 2007
Issuing agency(ies)
General Administration of Quality Supervision, Inspection and Quarantine
Summary
This standard applies to the time difference method for the principle of the closed pipe using ultrasonic flowmeter type evaluation, initial verification, testing and use of follow-up inspection. This procedure does not apply to open channels or culverts ultrasonic flow measuring instruments of the test.
