Invention-patented adaptive DP measurement
Measure stable low demand and peak flow with one integrated DP platform. The approved public baseline is 100:1, with ±1% in the normal operating band and ±3.75% at switching points and the two range ends.
Adaptive Wide-Range DP Flowmeter
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Built for processes that operate beyond the practical range of a single DP primary element, the Adaptive Wide-Range DP Flowmeter combines dedicated low- and high-flow measurement sections with automatic, position-confirmed changeover. The result is a stronger low-flow signal, protected peak-flow capacity, continuous totalization and one coordinated engineering package. Select dual-orifice when an ISO 5167-2 standard-orifice basis leads the specification; select dual-balanced when the widest calibrated operating envelope or constrained piping leads the decision. Shizhong sizes and validates each system against the actual process and installation data.
Final specifications are confirmed against process data, piping, material, pressure class, applicable code and metrology requirements.
ONE PLATFORM · TWO MEASUREMENT CONFIGURATIONS
Dedicated low- and high-flow primary elements create overlapping measurement bands. Automatic changeover uses hysteresis, position feedback and the correct coefficient set while maintaining continuous totalization. Both configurations share this adaptive architecture; the difference is the standards and calibration basis selected for the project.
Standards-based route
Choose this configuration when a recognized standard-orifice calculation basis, familiar DP engineering practice and ISO 5167-2 design limits for each qualifying active measurement section lead the specification.
Full-flow-calibrated route
Choose this configuration when maximum calibrated range, stronger low-flow DP or constrained piping leads the decision. Multi-hole elements and the complete switching system are calibrated as one coordinated measurement package.
DOCUMENTED PERFORMANCE MILESTONE
In the documented DN50 development configuration, a 25% open-area low-range element covered 0.38–3.8 m³/h and a 72.9% open-area high-range element covered 3.8–38.0 m³/h. The combined test envelope was 0.38–38.0 m³/h.
Performance statement
Up to 100:1*
*Achieved in this specific DN50 water configuration. Shizhong confirms the guaranteed operating range for each project through application-specific sizing and full-system flow calibration.
| Parameter | Low range | High range |
|---|---|---|
| Open area | 25.0% | 72.9% |
| Hole pattern | 4 symmetric holes · Ø6.25 mm | 5-star holes · Ø16.29 mm |
| Flow range | 0.38–3.8 m³/h | 3.8–38.0 m³/h |
| Band coverage | 10:1 | 10:1 |
Supported by invention patent ZL202510551686.1
Patent title: “A Differential-Pressure Measurement Device”; grant publication CN120102006 B.
Request a detailed datasheet with dimensional drawings, material certificates and ordering information for Adaptive Wide-Range DP Flowmeter.
Production and documentation schedules are confirmed in the quotation after technical review and drawing approval.
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