Straight pipe requirements comparison table for different flowmeter types - electromagnetic vs ultrasonic flowmeters
Flowmeter straight pipe requirements vary greatly: electromagnetic 5D/3D, ultrasonic 10-20D/5-10D, radar none, selection depends on measurement principle.
Straight pipe requirements vary significantly among flowmeter types due to different measurement principles. Here's a comprehensive comparison:
- Electromagnetic flowmeters (LGF series): Upstream 5D, downstream 3D, relatively tolerant to flow disturbances
- Ultrasonic flowmeters: Clamp-on type requires upstream 10D-20D, downstream 5D-10D, highly sensitive to flow profile
- Doppler radar flowmeters (HZ-KSLF): Non-contact measurement, no straight pipe limitations, ideal for open channels and irregular waterways
- Vortex flowmeters: Upstream 15D-20D, downstream 5D, sensitive to vibrations
- Orifice plate flowmeters: Upstream 10D-30D, downstream 5D-8D, most stringent requirements
Special condition adjustments: Add 5D after 90° elbows, 10D after control valves, 3D after reducers. Electromagnetic flowmeters offer significant advantages in complex piping systems due to their tolerance to flow disturbances. Proper straight pipe selection ensures measurement accuracy meets design specifications for industrial applications.
Installation & Commissioning