When a new or modified large-bore industrial pipeline is handed over, owners and contractors need an independent flow check to prove the line and pumps meet specification. The YF-P2 portable clamp-on meter provides high-accuracy verification on very large pipes without any intrusive work.
The challenge
- Acceptance tests demand higher accuracy than routine monitoring.
- Large diameters up to several metres make inline metering impractical.
- Verification is temporary, so a permanent meter is not justified.
- Results must be readable and exportable for handover records.
The solution: YF-P2
The YF-P2 is a portable transit-time meter with a large rotatable display and a wide diameter range suited to acceptance testing. See the YF-P2 specifications →
- DN25-DN5000 range for large transmission and process lines.
- ±0.5% accuracy with 0.15% repeatability.
- V and N clamp-on mounting methods.
- 3.5″ 480×320 IPS display, 360-degree rotatable.
- RS485 Modbus RTU and analog output for data capture.
Configuration used in this application
| Meter | YF-P2 portable transit-time |
|---|---|
| Pipe diameter | DN25-DN5000 (1″-200″) |
| Accuracy | ±0.5% (0.5-5.0 m/s) |
| Linearity / repeatability | ±0.5% / 0.15% |
| Flow velocity | 0.1-12.0 m/s |
| Mounting | V method and N method (clamp-on) |
| Display | 3.5″ 480×320 IPS, 360° rotatable, 10-digit |
| Communication | RS485, Modbus RTU |
How it is deployed
- Agree test points and flow conditions with the contractor and owner.
- Install clamp-on transducers on a straight section and verify signal and zero.
- Run the pump at specified operating points and record steady flow.
- Compare measured flow against design values and export results for the handover report.
What the operator gets
- Independent, high-accuracy flow evidence for acceptance.
- No pipe modification or shutdown during testing.
- Coverage from small to very large diameters with one instrument family.
- Clear records suitable for handover documentation.
Frequently asked questions
What accuracy can I expect for an acceptance test?
The YF-P2 provides +/-0.5% accuracy (0.5-5.0 m/s) with 0.15% repeatability, suited to verification and handover testing.
Can it measure pipes of several metres?
Yes, the range runs to DN5000 with appropriate clamp-on transducers.
Can results be sent to a data logger?
Yes, the meter offers RS485 Modbus RTU and an analog output for external recording.
Have a similar requirement?
Send us your pipe size, pipe material, fluid, temperature and quantity. Our engineers will recommend the right configuration and reply with factory-direct wholesale/OEM pricing in English.
Browse our complete range on the Products page.
Questions about your application? Contact our team or request a quote — we respond within 24 hours.

