Shizhong proprietary low-loss insertion measurement
Shizhong Lierba™ combines a low-loss insertion probe with a proprietary anti-plugging pressure-opening concept, drainage-friendly geometry and engineered purge or online-service options for large pipes and difficult gases.
Lierba™ Low-Loss Differential-Pressure Flowmeter
Image 1 of 3 · Auto-advances every 3.2 seconds
TWO INSERTION-METER ROUTES
Both routes derive flow from a measured total-to-static pressure difference and retain the low-loss, large-pipe economics of an insertion primary element. Their pressure-opening geometry and coefficient basis are different, so Shizhong does not transfer coefficients or installation claims from one design to another.
Shizhong proprietary route
A single total-pressure opening, drainage-oriented cut geometry and optional purge or retractable hardware address the fouling and condensate-management problems common in coal gas, flue gas and other difficult duties.
Multi-point averaging route
Multiple impact-pressure ports sample the velocity profile across the pipe and feed an internal averaging chamber. It is a practical, economical choice for large clean-fluid lines with a defined disturbance and calibration basis.
This product family offers two clearly documented routes. Lierba™ is Shizhong's proprietary single-point differential-pressure probe for applications where fouling, condensate drainage and maintainability lead the selection. The conventional multi-port averaging Pitot route samples impact pressure at several radial positions for large clean-fluid pipes and ducts. Neither route receives a universal ISO 5167 coefficient: the probe coefficient, minimum differential pressure, velocity profile, installation and calibration basis are confirmed for each project.
Final specifications are confirmed against process data, piping, material, pressure class, applicable code and metrology requirements.
Request a detailed datasheet with dimensional drawings, material certificates and ordering information for Lierba & Averaging Pitot Flowmeters.
Production and documentation schedules are confirmed in the quotation after technical review and drawing approval.
Send your process data for an engineering review and a project-specific next step.