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30 Piping recommendations
Section 2: Mechanical installation Daniel 3410 Series Ultrasonic Gas Flow Meter Installation Manual
June 2014 3-9000-759 Rev D
Flow conditioning is recommended for best measurement results
• Honed or un-honed meter tube(s)
• Flow direction (unidirectional or bidirectional)
• Correct meter size selection - too low may cause poor flow stability (thermal
convection or too fast may cause erosion problems and resonance, cracks or failure of
probes or thermowells (approximately 0.3 to 30 m/sec or 1 to 100 ft/sec).
• Space availability for meter lengths (to allow inlet piping customization)
• Concentric alignment pins or flange concentricity technique considerations
IMPORTANT
The bore of the mating piping should be within 1% of the meter inside diameter.
Figure 2-5 Piping recommendations uni-directional without flow conditioner
For optimal flow measurement conditions, Daniel suggests the piping configurations below.
Regardless of the configuration selected, the user agrees to accept full responsibility for the
site piping design and installation.