Our Products
Ultrasonic Flow Meters
Energy & OEM
All YS-Flux Ultrasonic Flow Meters at a Glance
In one sentence: a clamp-on ultrasonic flow meter measures liquid flow from the outside of a pipe with ultrasound — transducers strap onto the pipe wall and time ultrasonic signals passing through the liquid (the transit-time principle), so there is no pipe cutting, no pressure drop, no wetted parts and no process shutdown. YS-Flux makes portable, compact magnetic-snap, fixed wall-mount and BTU/energy versions for water, HVAC, district energy and industrial liquids, from 9 mm (DN6) up to DN5000.
| Model | Form factor | Pipe range | Accuracy | Key outputs | Best for |
|---|---|---|---|---|---|
| YF-P1 | Portable, handheld | DN25–DN2000 | ±1.0% | 4–20 mA, pulse/OCT | Field surveys, spot checks, pump testing; 16 h battery |
| YF-P2 | Portable premium kit | DN25–DN5000 | ±0.5% | 4–20 mA, RS485 Modbus, OCT, relay, SD logging | High-accuracy field measurement & balancing, up to 12 m/s |
| YF-W200H | Portable, handheld | DN15–DN6000 | ±1.0% | RS232, built-in data logger (PC export) | Anywhere field surveys & spot checks; 12+ h battery, wide range |
| YF-C3 | Compact, magnetic snap-on | OD 9–277 mm | ±2.0% | 4–20 mA, RS485 Modbus, OCT | Small pipes, tight spaces, OEM; tool-free mount |
| YF-C3M (upgraded) | Compact, magnetic snap-on | OD 9–115 mm (DN6–DN100) | See product specs | 4–20 mA, RS485 Modbus, OCT | Enhanced small-pipe monitoring; integrated or split |
| YF-C3M clamp type | Compact, universal clamp | DN6–DN100 (OD 9.53–110 mm) | ±2.0% | 4–20 mA, RS485, OCT | Small/medium metal pipes, fluids to 120 °C |
| YF-C3 DN125–DN250 | Compact clamp-on | DN125–DN250 | ±1.0% | 4–20 mA, RS485, optional OCT | Medium-large pipes, PTFE-coated body to 120 °C |
| YF-E5 | Compact high-spec, colour display | OD 9–277 mm | See product specs | Energy-ready temperature input | HVAC/building services; quick mount, colour display |
| YF-C6 | Fixed wall-mount | DN25–DN2000 | ±1.0% | 4–20 mA, RS485 Modbus, OCT, relay | Continuous online monitoring; PLC/BMS/SCADA |
| YF-C8 | Fixed premium wall-mount | DN25–DN5000 | ±0.5% | 4–20 mA, RS485 Modbus, OCT, relay, optional GPRS | Largest lines & mission-critical; remote & high-temp options |
| YF-W200D | Fixed wall-mount, Ex explosion-proof | DN15–DN6000 | ±1.0% | 4–20 mA, RS485 Modbus, pulse/OCT, relay | Hazardous oil, gas & chemical areas; clamp-on or insertion |
| YF-E6 | Clamp-on energy / BTU meter | DN25–DN2000 | Flow ±1.0% / energy ±2.0% | 4–20 mA, RS485 Modbus, OCT, relay | HVAC & district heating/cooling energy & BTU billing |
| YF-E3M | Compact energy meter | DN6–DN100 | ±2.0% | 4–20 mA, RS485 Modbus, OCT | Small-pipe HVAC, chilled water, energy billing; OLED display, PT1000 temp sensors |
How to choose the right clamp-on flow meter
- Temporary / field work — spot checks, pump testing, commissioning and balancing: choose a portable meter, YF-P1 for everyday surveys or YF-P2 for ±0.5% high accuracy and the widest range, or the handheld YF-W200H with its 12+ hour battery and DN15–DN6000 range.
- Small pipes, tight spaces or OEM integration, with quick tool-free permanent mounting: choose a compact magnetic-snap meter — YF-C3, YF-C3M or the colour-display, energy-ready YF-E5.
- Permanent, continuous online monitoring feeding PLC / BMS / SCADA: choose a fixed wall-mount meter — YF-C6 at ±1.0%, or the premium YF-C8 at ±0.5% up to DN5000 with optional GPRS remote monitoring. In hazardous oil, gas or chemical areas choose the explosion-proof YF-W200D.
- Heating/cooling energy or BTU billing: choose the clamp-on energy meter YF-E6, which combines flow with supply/return temperature to calculate thermal energy.
Portable Ultrasonic Flow Meters
Handheld, battery-powered clamp-on meters for field surveys, temporary monitoring and spot checks.
YF-P1 Portable
Handheld Clamp-on Meter
Battery-powered handheld ultrasonic flow meter for field surveys, spot checks and pump testing. +/-0.5-1.0% accuracy, DN25-DN2000, 16-hour battery.
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YF-P2 Portable
High-Accuracy Handheld Meter
Lightweight portable clamp-on meter with +/-0.5% accuracy and flow velocity up to 12 m/s, DN25-DN2000 for demanding field measurement.
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YF-W200H Handheld
Portable Clamp-on Meter
Portable handheld clamp-on ultrasonic flow meter. +/-1% accuracy, DN15-DN6000, -30 to 160 C, 12-hour Ni-MH battery and built-in data logger. Wholesale & OEM.
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YF-W200D
Explosion-Proof Fixed Meter
Ex explosion-proof fixed wall-mount transit-time ultrasonic flow meter for hazardous-area liquids. +/-1% accuracy, DN15-DN6000, clamp-on or insertion transducers, RS485 Modbus, 4-20mA, pulse and relay. Wholesale & OEM.
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Compact Clamp-on Flow Meters
Magnetic snap-on meters for small pipes – tool-free installation for permanent or temporary use.
YF-C3 Compact
Magnetic Snap-on Series
Ultra-compact clamp-on meter for small pipes (OD 9-115 mm). Magnetic tool-free mounting, 4-20mA/RS485/OCT outputs, ideal for tight spaces and OEM integration.
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YF-C3 Compact (Upgraded)
Enhanced Snap-on Series
Upgraded compact magnetic-snap clamp-on meter with an enhanced configuration for more demanding small-pipe flow monitoring.
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YF-C3M Compact
Compact Energy Meter
Compact clamp-on meter with built-in heat/energy measurement for HVAC billing and energy auditing, DN25-DN1200.
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YF-E5 Compact
Color-Display Series
High-spec compact clamp-on meter with color display, magnetic tool-free mounting and an extended pipe/fluid range.
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YF-C3 DN125-DN250
Compact for Medium-Large Pipes
Compact clamp-on meter configured for medium-large pipes DN125-DN250, +/-1% accuracy, aluminum-alloy body with Teflon outer, RS485/4-20mA.
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Fixed Clamp-on Flow Meters
Wall-mount transit-time meters for continuous, permanent online flow monitoring.
YF-C6 Fixed
Wall-Mount Clamp-on Meter
Fixed wall-mount transit-time meter for continuous online monitoring, +/-0.5% accuracy, DN25-DN2000, 4-20mA/RS485 Modbus/OCT/relay outputs.
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YF-C8 Fixed (Premium)
High-Accuracy Fixed Meter
Premium fixed clamp-on meter with +/-0.5% accuracy, DN25-DN5000, GPRS and high-temperature options.
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Clamp-on Energy (Heat/BTU) Meters
Compact clamp-on ultrasonic energy meter for small-pipe HVAC, chilled water and energy billing. DN6-DN100, PT1000 temperature sensors, OLED display.
YF-E3M Energy Meter
Clamp-on Heat / BTU Meter
Clamp-on ultrasonic heat/cooling (BTU) energy meter: flow plus paired temperature sensors for HVAC billing and energy management.
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Clamp-on Energy (Heat/BTU) Meters
Measure thermal energy for HVAC billing and energy management – no pipe cutting.
YF-E6 Energy Meter
Clamp-on Heat / BTU Meter
Clamp-on ultrasonic heat/cooling (BTU) energy meter: flow plus paired temperature sensors for HVAC billing and energy management.
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