YUNYI High Protection Ultrasonic Level Meter
Non‑contact. Rugged. Intrinsically safe.
The XY‑GA series is a next‑generation ultrasonic level meter developed for demanding industrial environments. The cast aluminum enclosure is both waterproof and dust‑tight, featuring a transparent observation window for easy on‑site reading. Fully digital and user‑friendly, it integrates level measurement, data transmission, and human‑machine interaction into one robust device.
Unlike traditional contact‑based methods (pressure, capacitance, float switches), the XY‑GA never touches the medium. This eliminates common problems such as fouling, clogging, leaks, corrosion, and high maintenance.
Key Features
All‑in‑one intelligent design – Equipped with an industrial‑grade imported microcontroller, the device provides on‑site display, programmable high/low setpoints, and adjustable outputs — all field configurable.
Exceptional protection – The cast aluminum housing offers outstanding dust and water resistance, making it suitable for harsh weather and extreme temperatures.
Advanced compensation – Built‑in digital temperature compensation ensures stable, accurate readings even under fluctuating environmental conditions.
Anti‑interference – Robust circuit design and dedicated integrated circuits deliver reliable performance in electrically noisy industrial settings.
Intrinsically safe (Ex ia) – Certified in accordance with national explosion‑proof standards and featuring an Ex ia IIB T4 Gb intrinsic safety rating.
Multiple output options – Choose from analog output (4‑20mA), switch output (relay), or RS485 (Modbus) for easy integration with existing control systems.
Simple Technical Highlights (No Table)
| Feature | Detail |
|---|---|
| Measurement mode | Non‑contact continuous level measurement |
| Housing | Cast aluminum, waterproof, with transparent window |
| Main processor | Industrial‑grade imported microcontroller |
| Temperature compensation | Digital, fully automatic |
| Output types | Analog (4‑20mA) / Switch (relay) / RS485 |
| Setpoint control | User‑adjustable high/low limit nodes |
| Field display | Built‑in, easy to read |
| Protection rating | High dust/water resistance (suitable for extreme environments) |
| Hazardous area rating | Ex ia IIB T4 Gb (intrinsically safe) |
Where It Excels
The XY‑GA series is widely used across industries where level measurement is critical:
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Water & wastewater treatment – tank level monitoring, pump control, open channel flow
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Chemical processing – corrosive or toxic liquids without contact risk
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Petrochemical & fuel storage – explosion‑rated areas requiring intrinsic safety
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Food & beverage – hygienic, contamination‑free level sensing
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Mining & bulk solids – dusty, harsh environments
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General industrial – any tank, silo, or vessel where non‑contact measurement is preferred
Non‑contact operation also makes it ideal for sticky, viscous, or slurry‑type materials that would quickly foul traditional sensors.
Why Choose XY‑GA
Rugged by design – Cast aluminum construction stands up to outdoor installations, high humidity, dust, and temperature swings.
Maintenance‑free – No moving parts, no contact with media, no periodic cleaning or replacement of wetted parts.
Explosion‑safe – Certified for use in hazardous areas where flammable gases or vapors may be present.
Easy to install – International standard electrical interface and wiring terminals simplify field wiring and integration.
Field‑friendly – The transparent window allows instant visual confirmation of level readings without opening the enclosure.
Future‑ready – Digital outputs (RS485 Modbus) enable remote monitoring, data logging, and integration with SCADA or IIoT platforms.
Ordering Information
To specify the correct model for your application, please provide:
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Measurement range – distance from sensor to minimum/maximum level
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Medium type – liquid, slurry, powder, or solid
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Tank/vessel geometry – size, shape, and any internal obstructions
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Environmental conditions – temperature range, humidity, presence of dust or vapors
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Output requirement – 4‑20mA only, relay only, RS485, or combination
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Hazardous area classification – if applicable (Ex ia rating available)
The XY‑GA series is available in multiple range options and configurations to match your specific process needs.





