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Reference, Installation, and Operations Manual Section 3: Installation
3-9000-743 Rev S June 2013
Mechanical installation 51
3.3 Mechanical installation
The Daniel Ultrasonic Gas Flow Meters are assembled, configured, and tested at the factory. The
meter assembly includes the transmitter electronics, base unit and the meter body with the
transducer s and cable assemblies.
Figure 3-7 Daniel Ultrasonic Gas meter body
3.3.1 Meter body installation
Refer to the Daniel Gas Ultrasonic Meter Product Data Sheet
(Daniel P/N DAN-USM-FAMILY-DS-0306) for piping information. The SeniorSonic and JuniorSonic
Ultrasonic Meter Datasheet may be downloaded from the Daniel website:
http://www2.emersonprocess.com/en-US/brands/daniel/Flow/ultrasonics/Pages/Ultrasonic.aspx
For uni-directional flow, the minimum straight pipe length is as follows:
Table 3-4 Piping recommendations uni-directional flow
SeniorSonic JuniorSonic
15D up stream (with a flow conditioner) 20D up stream
20D up stream (no flow conditioner)
5D down stream 5D down stream
To access the product manual, from the Daniel products page (above link), select the Daniel
SeniorSonic 4-Path Gas Flow Meter link, click the Documentation tab, expand the Manuals &
Guides tab, then select the manual.