Measurement of fluid flow in closed conduits — Ultrasonic transit-time meters for liquid
STANDARD published on 3.7.2012
Designation standards: ISO 12242:2012
Publication date standards: 3.7.2012
The number of pages: 69
Approximate weight : 207 g (0.46 lbs)
Country: International technical standard
Category: Technical standards ISO
Description / Abstract: ISO 12242:2012 specifies requirements and recommendations for ultrasonic liquid flowmeters, which utilize the transit time of ultrasonic signals to measure the flow of single-phase homogenous liquids in closed conduits. There are no limits on the minimum or maximum sizes of the meter. ISO 12242:2012 specifies performance, calibration and output characteristics of ultrasonic meters (USMs) for liquid flow measurement and deals with installation conditions. It covers installation with and without a dedicated proving (calibration) system. It covers both in-line and clamp-on transducers (used in configurations in which the beam is non-refracted and in those in which it is refracted). Included are both meters incorporating meter bodies and meters with field-mounted transducers.