Emerson Daniel 3818, Installation Manual

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Figure 2-3: Piping recommendations bidirectional flow
All pipe lengths are minimum:
• D = Nominal pipe size in inches (i.e. 6" pipe size; 10 D = 60 in)
• P = Pressure measurement location
• T = Temperature measurement location
Important
Flow conditioners are NOT recommended for 3818 LNG Liquid Ultrasonic Flow Meters
based on low flow rate conditions in liquefied natural gas applications.
• 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 Daniel 3818 LNG 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.
• The dual transmitter electronics assemblies are remote mounted.
• 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.
2.4 Field hydrostatic pressure testing
The Daniel 3818 LNG Liquid Ultrasonic Flow Meter can be hydro-tested without any special
preparations. The transducers are not exposed to the process pressure and can remain
installed in the meter.
The liquid ultrasonic meter pressure containing parts include but are not limited to the
transducer housings. These pressure containing parts are pressure tested while attached
to the meter body as a completed ultrasonic meter assembly.
The hydrostatic test is verification of the pressure containing capability of the liquid
ultrasonic meter pressure containing parts and the seals that seal them. Perform a visual
inspection of the meter and visually inspect the meter and leak test the flanges.
Installation manual Mechanical Installation
3-9000-771 May 2019
Installation manual 31