Ultrasonic Level Sensor
The ultrasonic level gauge is a non-contact, high-reliability, and cost-effective device for accurate ultrasonic level measurement of liquids, slurries, and solids in industrial environments. Designed for easy installation and low maintenance, it offers a reliable solution for water treatment, municipal, chemical, metallurgical, and machinery manufacturing applications.
Ultrasonic level sensors are available in two types: integrated and separated. The integrated type combines the sensor and host into a single unit, providing simple and convenient installation. The separated type allows the sensor and host to be installed independently, making it ideal for storage tanks, silos, and bracket-mounted setups.
Level Measuring Instruments Description
Ultrasonic Level Sensor-Features
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Non-contact measurement: Accurate monitoring unaffected by medium viscosity, density, or other properties, with strong anti-interference performance.
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Environmentally friendly materials: Safe for the medium and prevents contamination.
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Food and pharmaceutical safe: Non-toxic design suitable for sensitive applications.
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Level alarm capability: Optional relay output allows real-time level alarm functionality.
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User-friendly configuration: Panel button interface enables fast and convenient parameter setup.
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Advanced signal processing: Microprocessor-based echo processing ensures reliable measurement in complex conditions.
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Self-learning and compensation: Automatic echo identification and temperature compensation minimize drift and improve accuracy.
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Rugged design: IP67 protection allows operation in most outdoor and harsh industrial environments.
Level Ultrasonic Sensor-Common Applications
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Water Tanks: Ultrasonic water level sensors provide accurate, real-time monitoring for residential, commercial, and industrial tanks, preventing overflow or shortages.
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Industrial Processes: Used in chemical, food & beverage, pharmaceutical, and wastewater treatment industries to maintain precise ultrasonic level measurement in tanks and vessels.
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Pump Control: Can integrate with pump systems for automatic water level management in irrigation, sewage, and drainage systems.
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Environmental Monitoring: Ideal for rivers, lakes, and reservoirs, enabling ultrasonic water level detection for flood forecasting and water resource management.
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Hydroelectric Power Plants: Monitors reservoir levels to regulate turbine flow, ensuring safe and efficient power generation.
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Aquaculture: Maintains optimal water levels in ponds, tanks, and raceways, supporting healthy growth of aquatic species.
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Swimming Pools and Spas: Ensures water levels remain within safe and comfortable ranges to prevent overfilling or draining.
Level Measuring Instruments Parameter
| Measuring Medium | liquid or material that is generally or corroded |
| Measuring Range | 5m, 10m, 15m, 30m, 50m, 60m |
| Probe Material | PTFE |
| Accuracy | ±3mm (no wave calm water surface) |
| Resolution | 3~5mm or 0.1% (take large value> |
| Display Mode | LCD, parameters can be set through the panel buttons |
| Signal Output | 4~20mADC |
| Load Resistance | 250Ω (when two-wire 24V power supply);500Ω (when four-wire 220VAC power supply) |
| Relay Output | 2 groups are optional, and the relay status is programmable |
| Relay Contact Capacity | 250VAC 8A. 30VDC 5A |
| Working Temperature | -25~80 °C |
| Rated Pressure | -0.1 ~ 1.0MPa |
| Communication Interface | RS232, RS485/Modbus |
| Power Supply | Standard 24 V DC; Optional 220VAC; Battery type 3.8V 25600mAh |
| Electrical Interface | M20*1.5, 1/2″NPT |
| Explosion-proof Grade | Exia II C T6 Ga/Exd IIC T6 Gb |
| Protection level | IP67 |
Non contact liquid level indicator, LCD display, with rs485 signal output
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Related Product Recommendations
What is an ultrasonic level sensor and how does it work?
An ultrasonic level sensor is a non-contact device that measures the distance to the surface of liquids or solids using high-frequency sound waves. The sensor emits ultrasonic pulses, which reflect off the material surface; the time-of-flight determines the level.
Manufacturer advantages:
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No physical contact, reducing corrosion and contamination
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Suitable for open tanks, silos, and reservoirs
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Provides continuous, real-time level monitoring
Why are ultrasonic level sensors used in oil, chemical, and pharmaceutical industries?
Ultrasonic level sensors are ideal for non-corrosive, moderate-temperature applications:
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Oil & Gas: Monitoring storage tanks for fuel, diesel, and light crude oil
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Chemical: Measuring water-based or non-corrosive chemicals
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Pharmaceutical: Tank and hopper level measurement for hygienic solutions
Manufacturer perspective: Proper sensor selection ensures accurate measurement without risking chemical contamination or sensor degradation.
How accurate are ultrasonic level sensors compared to radar and magnetic gauges?
| eature | Ultrasonic Level Sensor | Radar Level Gauge | Magnetic Level Gauge |
|---|---|---|---|
| Accuracy | ±5–10 mm | ±1–3 mm | ±1–5 mm |
| Contact | Non-contact | Non-contact | Float inside chamber |
| Pressure tolerance | Low | High | High |
| Temperature tolerance | Moderate | High | High |
| Maintenance | Medium | Low | Very low |
Manufacturer note: Ultrasonic sensors are best for open-air or low-pressure tanks, while radar and magnetic gauges are preferred for high-pressure, high-temperature, or corrosive fluids.
Can ultrasonic level sensors be used in water, wastewater, and HVAC systems?
Yes. Ultrasonic sensors are commonly used in:
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Water & Wastewater: Reservoirs, clarifiers, and sludge tanks
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HVAC Systems: Chilled water and hot water storage tanks
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Environmental Monitoring: Rainwater and stormwater level measurement
Manufacturer tip: Ensure proper tank geometry and echo-free mounting for accurate measurement.
How are ultrasonic sensors applied in energy, automotive, marine, and mining industries?
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Energy & Power: Cooling water tanks, fuel level monitoring
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Automotive: Fluid level measurement in manufacturing tanks
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Marine & Shipping: Ballast water, fresh water, and bilge monitoring
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Mining & Environmental: Tailings, slurry, and sediment measurement
Manufacturer insight: Ultrasonic sensors provide cost-effective, non-contact measurement for applications with moderate process conditions.
What factors should manufacturers consider when selecting an ultrasonic level sensor?
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Medium characteristics: Density, foam, vapor, turbulence
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Tank geometry: Shape, size, and internal obstructions
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Temperature & pressure: Typically <80°C and <1 MPa for standard models
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Output: 4–20 mA, HART, Modbus
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Installation: Avoid obstructions in the beam path; consider mounting height
Proper selection ensures stable, reliable, and maintenance-efficient level measurement.
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