Emerson Rosemount 3814 Instruction Manual page 30

Mechanical Installation
January 2023
• The bore of the mating piping should be within 1% of the meter inside
diameter.
• The meter is provided with dowel pins to align the meter body bore with the
bore of the mating piping.
• The Rosemount Liquid Ultrasonic Flow Meter should be mounted in horizontal
piping with the chord paths horizontal
CAUTION
FAULTY METER INSTALLATION
Correctly install the equipment. If meter bodies are mounted or oriented
differently than specified above, debris may collect in the transducer ports.
Failure to comply may cause equipment damage or adversely affect the
transducer signals.
• Normally, the meter body is installed so that the electronics assembly is on the
top of the meter. If there is insufficient space above the piping for this
arrangement, the meter can be ordered with extra long transducer cables for
remote mounting or the meter housing can be installed with the electronics
assembly on the bottom.
• The mating piping should include temperature and pressure measurement
connections located a minimum of two nominal pipe diameters length down
stream of the meter, or per API MPMS 5.8.
• Piping requirements for field calibration of high viscosity, low Reynolds
Number applications is comprised of the upstream pipe section, CPA
(Canadian Pipeline Associates) flow conditioning plate, Venturi reducer section,
ultrasonic meter and downstream pipe section.
2.3.1 High Viscosity piping requirements
The piping requirements for High Viscosity meter applications are shown in
Figure
CAUTION
HIGH VISCOSITY FLOW MEASUREMENT METER RECALIBRATION
In high viscosity meter applications, if the connection between the upstream
meter flange
disassembled or disturbed for any reason, the meter will need to be recalibrated
in accordance with Emerson recommendations. Alignment of this flange joint is
critical in the performance of the meter. It is recommended to consult Emerson
Customer Support for assistance when re-aligning this joint.
Failure to recalibrate the meter and correctly reinstall the flanged joint will result
in faulty flow measurement.
30
2-5.
(Figure 2-5, Item D) and the Venturi reducer
Installation manual
00825-0100-3814
(Figure 2-5, Item C) is
Emerson.com/Rosemount