Clamp-on Ultrasonic Flow Meters Wholesale & OEM
Understand YS-Flux in 3 Lines
Factory-direct flow meter manufacturer and export supplier based in Shenzhen, China. We ship clamp-on ultrasonic flow and energy meters in bulk to overseas distributors and integrators, and run full private-label / OEM programs for brands worldwide.
Portable, compact and fixed clamp-on flow meters plus heat/BTU energy meters with OEM branding, custom packaging, configurable specifications, technical support and responsive export service.
Built for Global B2B
YS-Flux supplies dependable ultrasonic flow and energy meters to international customers: bulk/wholesale orders, competitive factory pricing, and practical pre- and post-sales support. Tell us your pipe size, fluid, temperature, outputs and quantity we recommend the right model and configuration.
Our Product Range
Clamp-on ultrasonic flow meters and heat/BTU energy meters for clean liquids – portable, compact and fixed, from DN6 to DN5000, with full wholesale and OEM/private-label support.
Portable Flow Meters
Handheld, battery-powered clamp-on meters for field surveys and spot checks. DN25-DN2000.
Compact Clamp-on Meters
Magnetic snap-on meters for small pipes OD 9-277 mm, tool-free install, 4-20mA/RS485.
Fixed Clamp-on Meters
Wall-mount transit-time meters for continuous online monitoring, up to DN5000.
Energy (BTU) Meters
Clamp-on heat/cooling energy meters for HVAC billing, flow plus supply/return temperature.
Why Buy From Us
Factory-direct wholesale pricing for export
Full OEM / private label logo, packaging, manuals
Wide range: DN6 DN5000, 0.5% 1% accuracy
4 20 mA / RS485 Modbus / OCT / GPRS options
Responsive English support and fast quotation
Trusted by Distributors, Integrators & OEMs Worldwide
We’ve resold the compact C3 series under our own brand across multiple repeat orders. The units arrive consistently calibrated and the private-label packaging is clean enough that end users assume it comes from our own production line.
The E6 clamp-on energy meters went into a district-cooling billing retrofit with no pipe cutting and no shutdown. Flow and return-temperature readings agreed with our reference meters, which made third-party sign-off straightforward.
Our commissioning team carries YF-P2 meters for pump tests and hydronic balancing. A full day of spot measurements on one battery, and the transducers fit risers where inline meters were never an option.
We specified the YF-C8 for permanent monitoring on large cooling mains. After more than a year of continuous operation the readings have stayed stable in a demanding plant environment.
Before we ordered, their engineers confirmed transducer selection, pipe preparation and straight-run requirements for every line. The meters performed to spec on first installation — that level of pre-sales support is rare at factory-direct pricing.
The magnetic snap-on C3 meters take minutes to mount on small lines with no hot work. Tool-free installation means our general maintenance crew can fit them without a flow specialist on site.
Find Your Meter
Flow Meter Knowledge Hub
Practical, buyer-focused guides on clamp-on ultrasonic and BTU energy meters — how they work, accuracy, pipe and fluid compatibility, installation, outputs and industry applications.
- What Is a Clamp-on Ultrasonic Flow Meter?
- How a Clamp-on Ultrasonic Flow Meter Works
- Clamp-on vs Inline Flow Meter
- How to Choose an Ultrasonic Flow Meter
- Choosing a Flow Meter by Application
- How Accurate Is a Clamp-on Flow Meter?
- 9 Factors That Affect Flow Meter Accuracy
- Transit-Time vs Doppler: Which to Use
- Outputs: 4-20mA, Pulse, Modbus, GPRS
- Which Pipe Materials Can Be Measured
- Which Pipe Sizes (DN15 to DN5000)
- Which Liquids & Temperatures
- Clamp-on Flow Meter Installation Guide
- Install Without Shutting Down the Pipe
- Troubleshooting: No Signal / Unstable Reading
- Portable vs Fixed Flow Meters
- Portable Flow Meter Uses & Applications
- What Is a BTU / Energy Meter?
- Flow Meters for Water & Wastewater
- Flow Meters for HVAC & District Energy
- Flow Meters for Chemical Process Industries
Browse all technical articles in our Flow Meter Knowledge Base, or request a quote with your pipe size, fluid and outputs.