Ultraflux Uf 841, User Manual

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NT UF 841 CP GB (d) / June 2015
4.3.2 External probes (clamp-on)
External probes may be mounted in several configurations depending on the number of ultrasound wave
reflections on the wall of the pipe:
Direct or / configuration: N (or Z) configuration:
Reflex or V configuration: W configuration:
Note: The longer the travel, the more accurate the measurement.
On the other hand, the ultrasound echo will be weaker the longer the distance and therefore difficult to
measure . A compromise must therefore be found between accuracy and ease of finding the ultrasounds.
This compromise depends on the application (fluid, quality of the wall, diameter, etc.).