Figure 2-3: Piping recommendations unidirectional flow
Figure 2-4: Piping recommendations bidirectional flow
All pipe lengths are minimum:
• D = Nominal pipe size in inches (i.e. 6" pipe size; 10 D = 48 in)
• P = Pressure measurement location
• T = Temperature measurement location
Refer to the ultrasonic meter product data sheet for piping information. The
Liquid Ultrasonic Flow Meter Datasheet may be downloaded from the Emerson
website: www.emerson.com/en-us/automation/rosemount.
NOTICE
To access the product datasheet, from the Emerson products page (above link),
select the Rosemount Liquid Ultrasonic Flow Meter link, click the Documentation
tab, expand the Data Sheets - Bulletins - Catalogs tab, then select the Data Sheet.
Meter tube dimensions with tube bundle or profiler plate for uni-directional and
bi-directional flow, the minimum straight pipe length is as follows:
Table 2-1: Piping recommendation for uni-directional or bi-directional flow
Uni-Directional Flow Bi-Directional Flow
8D up stream (with a flow conditioner) 8D up stream (with a flow conditioner)
8D up stream (no flow conditioner) 8D up stream (no flow conditioner)
5D down stream 8D down stream
Installation manual Mechanical Installation
00825-0100-3814 January 2023
Rosemount 3814 Liquid Ultrasonic Flow Meter 29
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