Builders of compact machines, test rigs and skids need to meter small-bore liquid lines where there is no room to cut in a traditional meter. The YF-C3 clamp-on meter covers outer diameters from 9 mm and integrates into equipment with minimal modification.
The challenge
- Pipes are very small (from around 9 mm OD).
- Cutting into the line adds leak paths and assembly time.
- OEM integration needs a compact, repeatable component.
- Fast response is required for dynamic test cycles.
The solution: YF-C3
The YF-C3 is a compact clamp-on transit-time meter designed for small pipes and OEM fitment. See the YF-C3 specifications →
- OD 9-277 mm across 18 size specifications.
- External mounting – no pipe cutting or wetted parts.
- 500 ms response time for changing flow.
- Compact form factor suited to machinery.
- Available with wholesale and OEM/private-label support.
Configuration used in this application
| Meter | Clamp-on ultrasonic flow meter (YF-C3) |
|---|---|
| Pipe OD range | 9-277 mm (18 specifications) |
| Accuracy | ±2.0% (0.5-5.0 m/s) |
| Flow range | 0.1-5.0 m/s |
| Repeatability | 0.80% |
| Response time | 500 ms |
How it is deployed
- Identify the pipe OD and select the matching size configuration.
- Fit the clamp-on sensors at a straight section inside the machine.
- Wire power and the output signal to the equipment controller.
- Validate reading against the test cycle and secure the sensor for production repeat.
What the operator gets
- Flow measurement added without cutting small tubing.
- Faster, lower-risk machine assembly.
- Consistent integration across production units.
- OEM branding and documentation available.
Frequently asked questions
What is the smallest pipe the YF-C3 can meter?
The YF-C3 covers pipe outer diameters from 9 mm up to 277 mm across 18 size specifications.
Does integrating it require cutting the pipe?
No, the sensors clamp onto the outside of the tube, avoiding extra leak paths and assembly work.
Is private labelling available for machine builders?
Yes, YS-Flux supports OEM/private-label supply with branding, documentation and configurable options.
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.

