Instruments de mesure de niveau

Capteur de niveau à ultrasons

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.

  Instruments de mesure de niveau Description  

Ultrasonic Level Sensor-Features

  • Non-contact measurement: Accurate monitoring unaffected by medium viscosity, density, or other properties, with strong anti-interference performance.

  • Environmentally friendly materials: Safe for the medium and prevents contamination.

  • Food and pharmaceutical safe: Non-toxic design suitable for sensitive applications.

  • Level alarm capability: Optional relay output allows real-time level alarm functionality.

  • User-friendly configuration: Panel button interface enables fast and convenient parameter setup.

  • Advanced signal processing: Microprocessor-based echo processing ensures reliable measurement in complex conditions.

  • Self-learning and compensation: Automatic echo identification and temperature compensation minimize drift and improve accuracy.

  • Rugged design: IP67 protection allows operation in most outdoor and harsh industrial environments.

Integrated ultrasonic level sensor with display for non-contact liquid level measurement in industrial tanks.
Ultrasonic water level sensor installed in a pit for non-contact continuous water level measurement.

Level Ultrasonic Sensor-Common Applications

  • Water Tanks: Ultrasonic water level sensors provide accurate, real-time monitoring for residential, commercial, and industrial tanks, preventing overflow or shortages.

  • Industrial Processes: Used in chemical, food & beverage, pharmaceutical, and wastewater treatment industries to maintain precise ultrasonic level measurement in tanks and vessels.

  • Pump Control: Can integrate with pump systems for automatic water level management in irrigation, sewage, and drainage systems.

  • Environmental Monitoring: Ideal for rivers, lakes, and reservoirs, enabling ultrasonic water level detection for flood forecasting and water resource management.

  • Hydroelectric Power Plants: Monitors reservoir levels to regulate turbine flow, ensuring safe and efficient power generation.

  • Aquaculture: Maintains optimal water levels in ponds, tanks, and raceways, supporting healthy growth of aquatic species.

  • Swimming Pools and Spas: Ensures water levels remain within safe and comfortable ranges to prevent overfilling or draining.

Ultrasonic Water Level Sensor-Working Principle

Le ultrasonic level sensor measures liquid levels using non-contact ultrasonic technology. It works in four main steps:

  1. Ultrasonic Emission: The sensor emits ultrasonic pulses, typically in the frequency range of 20 kHz to 200 kHz.

  2. Propagation: The pulses travel through air or other media until they encounter the liquid surface. Part of the energy reflects back while the remainder continues downward.

  3. Reflection and Reception: The sensor’s receiver captures the reflected ultrasonic waves. The time delay between emission and reception corresponds to the travel time of the pulses.

  4. Level Calculation: By calculating the propagation time, the sensor determines the distance from the liquid surface to the sensor, which directly indicates the liquid level.

This non-contact ultrasonic measurement ensures accurate and reliable monitoring in tanks, reservoirs, silos, and other industrial applications, making it ideal for ultrasonic water level detection and ultrasonic level measurement.

Ultrasonic level measurement working principle diagram showing non-contact liquid level measurement in an industrial tank.
Ultrasonic liquid level detector showing all-in-one and split type designs with dimensional drawings.

Ultrasonic Tank Level Sensor-Structure

Le ultrasonic level sensor is available in two types: integrated (one-piece) type and separated (two-piece) type, designed for flexible installation and diverse industrial applications.

  1. Integrated Type:

    • The sensor and host are combined into a single unit.

    • Simplifies installation and wiring.

    • Ideal for compact tanks or vessels where space is limited.

  2. Separated Type:

    • The sensor probe is installed separately from the host unit.

    • Suitable for large storage tanks, silos, or bracket-mounted installations.

    • Allows easier maintenance and flexible positioning for optimal signal reception.

Key Components:

  • Sensor Probe: Stainless steel or PVDF, corrosion-resistant.

  • Electronics Housing: IP67 protection, dustproof and waterproof.

  • Display/Control Module: Optional LCD/LED interface for local readings.

  • Connection Interface: Standard cable or M12 connector for signal transmission.

This design ensures accurate ultrasonic level measurement and reliable performance in diverse industrial environments.

  Instruments de mesure de niveau Paramètre  

Measuring Mediumliquid or material that is generally or corroded
Plage de mesure5m, 10m, 15m, 30m, 50m, 60m
Probe MaterialPTFE
Précision±3mm (pas de vague, surface de l'eau calme)
Résolution3~5mm or 0.1% (take large value>
Mode d'affichageLCD, les paramètres peuvent être réglés à l'aide des boutons du panneau.
Sortie du signal4~20mADC
Résistance à la charge250Ω (when two-wire 24V power supply);500Ω (when four-wire 220VAC power supply)
Sortie relais2 groupes sont optionnels, et l'état du relais est programmable
Relay Contact Capacity250VAC 8A. 30VDC 5A
Température de fonctionnement-25~80 °C
Rated Pressure-0.1 ~ 1.0MPa
Interface de communicationRS232, RS485/Modbus
Alimentation électriqueStandard 24 V DC; Optional 220VAC; Battery type 3.8V 25600mAh
Interface électriqueM20*1.5, 1/2″NPT
Grade antidéflagrantExia II C T6 Ga/Exd IIC T6 Gb
Protection levelIP67

Non contact liquid level indicator, LCD display, with rs485 signal output

  Instruments de mesure de niveau OEM/ODM

Ultrasonic Level Measurement-OEM ODM

We offer full OEM/ODM services for ultrasonic level sensors, providing flexible solutions tailored to your industrial needs. Our customization options include:

  • Measurement Range & Accuracy: Adjust the detection range and precision to match your specific application.

  • Output Signals: 4–20 mA, HART, or Modbus interfaces for seamless integration.

  • Material & Housing: Stainless steel, PVDF, and IP67-rated protection for harsh environments.

  • Installation Options: Integrated (one-piece) or separated (two-piece) types, with flange, bracket, or threaded mounting.

  • Display & Control Modules: Optional LCD/LED indicators for local monitoring.

Our experienced factory ensures high-quality production, fast prototyping, and reliable delivery, enabling you to implement customized ultrasonic level measurement solutions efficiently.

Atelier de production d'un fabricant d'instruments industriels montrant la fabrication à grande échelle de jauges de niveau et d'instruments de procédé

  Recommandations de produits connexes  

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:

  • No physical contact, reducing corrosion and contamination

  • Suitable for open tanks, silos, and reservoirs

  • Fournit continuous, real-time level monitoring

Ultrasonic level sensors are ideal for non-corrosive, moderate-temperature applications:

  • Oil & Gas: Monitoring storage tanks for fuel, diesel, and light crude oil

  • Chemical: Measuring water-based or non-corrosive chemicals

  • Pharmaceutical: Tank and hopper level measurement for hygienic solutions

Manufacturer perspective: Proper sensor selection ensures accurate measurement without risking chemical contamination or sensor degradation.

eatureCapteur de niveau à ultrasonsJauge de niveau radarIndicateur de niveau magnétique
Précision±5–10 mm±1–3 mm±1–5 mm
ContactNon-contactNon-contactFloat inside chamber
Pressure toleranceLowHighHigh
Temperature toleranceModerateHighHigh
MaintenanceMoyenLowVery 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.

Yes. Ultrasonic sensors are commonly used in:

  • Water & Wastewater: Reservoirs, clarifiers, and sludge tanks

  • HVAC Systems: Chilled water and hot water storage tanks

  • Environmental Monitoring: Rainwater and stormwater level measurement

Manufacturer tip: Ensure proper tank geometry and echo-free mounting for accurate measurement.

  • Energy & Power: Cooling water tanks, fuel level monitoring

  • Automotive: Fluid level measurement in manufacturing tanks

  • Marine & Shipping: Ballast water, fresh water, and bilge monitoring

  • Mining & Environmental: Tailings, slurry, and sediment measurement

Manufacturer insight: Ultrasonic sensors provide cost-effective, non-contact measurement for applications with moderate process conditions.

  • Medium characteristics: Density, foam, vapor, turbulence

  • Tank geometry: Shape, size, and internal obstructions

  • Temperature & pressure: Typically <80°C and <1 MPa for standard models

  • Output: 4–20 mA, HART, Modbus

  • Installation: Avoid obstructions in the beam path; consider mounting height

Proper selection ensures stable, reliable, and maintenance-efficient level measurement.

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En choisissant Instrava, vous bénéficiez d'un partenaire ayant une connaissance approfondie des applications industrielles et l'expertise nécessaire pour relever les défis opérationnels d'aujourd'hui.
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Nous offrons une personnalisation au niveau de l'ingénierie pour répondre aux conditions spécifiques du processus. De la plage de mesure et des matériaux aux signaux de sortie et aux options d'installation, nos solutions sont configurées pour s'adapter aux applications réelles.

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