SUL650 Wireless Ultrasonic Level Sensor LoRaWAN, 4G, NB IoT
SUL650 Wireless Ultrasonic Level Sensor LoRaWAN, 4G, NB IoT

Wireless Ultrasonic Level Sensor | LoRaWAN, 4G, NB-IoT | SUL650

The SUL650 is an industrial-grade, battery-powered wireless ultrasonic level sensor engineered for reliable remote monitoring where power supply or signal cabling is unavailable. Supporting LoRaWAN, 4G Cat-1, and NB-IoT protocols, the SUL650 delivers high-precision non-contact level measurement up to 15m directly to your cloud platform or SCADA system.

Key Advantages:

  • Multi-Protocol IoT: Integrated LoRaWAN, 4G Cat-1, or NB-IoT connectivity for seamless telemetry.

  • Cable-Free Deployment: Powered by a high-capacity 3.6V replaceable lithium battery.

  • Industrial Ruggedness: IP65 weatherproof enclosure with integrated SFTN LCD display.

  • Flexible Measuring Ranges: Standard 0.2m to 4m range (customizable up to 15m).

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Description

Non-Contact Remote Level Telemetry for Off-Grid Applications

Monitoring liquid levels in scattered storage tanks, agricultural reservoirs, remote sumps, or flood-prone rivers often fails due to the high cost of running power lines and communications cables. The SUL650 Intelligent Wireless Ultrasonic Level Sensor solves this by combining accurate acoustic level sensing with low-power wireless telemetry into a single, self-contained IP65 housing.

Seamless Cloud & SCADA Integration

Whether you are building a smart city water management network or tracking chemical inventories across multiple sites, the SUL650 offers versatile cellular and LPWAN options:

  • LoRaWAN: Ideal for local private networks, plant-wide deployments, and low operational cost data transmission.

  • 4G Cat-1 / NB-IoT: Perfect for standalone remote monitoring using public cellular infrastructure with wide coverage.

Engineered for Operational Efficiency

Featuring a integrated 5-digit SFTN LCD display with backlighting, field technicians can visually check local level readings and diagnostic parameters during setup without external handheld tools. Its low power draw ensures long-term battery life, drastically reducing site visit requirements and maintenance costs.

Typical Applications

  • Remote Storage Tanks: Water, fuel, diesel, and liquid chemical tank inventory monitoring.

  • Smart Water & Environmental: River level tracking, flood early-warning systems, and storm drainage pits.

  • Smart Agriculture: Remote irrigation tanks, slurry pits, and water troughs.

  • Wastewater Infrastructure: Manholes, lift stations, and overflow retention basins.

 

Features

  • Wireless IoT Connectivity: Options for LoRaWAN, 4G Cat-1, and NB-IoT for low-latency, remote data transfer.

  • Self-Powered Operation: Operating on a 3.6V DC replaceable lithium battery for complete grid independence.

  • High Precision Performance: Accuracy of up to ±0.15% FS with continuous non-contact acoustic measurement.

  • Local LCD Interface: High-contrast 5-digit SFTN LCD backlit display for local status checking.

  • Rugged Protection: IP65 weatherproof housing designed for harsh outdoor ambient environments (-25°C to +85°C).

  • Configurable Reporting Interval: Customizable measurement frequency to balance real-time reporting with battery longevity.

 

Specification

Parameter Technical Specification
Measurement Range Standard: 0.2 m to 4.0 m (Customizable up to 15 m)
Blind Zone 15 cm to 30 cm (range dependent)
Measurement Accuracy ±0.15% Full Scale
Wireless Protocol

LoRaWAN / 4G Cat-1 / NB-IoT (Selectable upon order)
Local Display 5-Digit SFTN LCD with Backlight
Power Supply 3.6V DC Replaceable Lithium Battery
Operating Temperature -25°C to +85°C
Protection Rating

IP65
Installation Thread Standard Threaded / Flange Mount Options
Output Data Level, Distance, Battery Voltage, Signal Strength (RSSI)

 

FAQ

Q: What is the main advantage of the SUL650 over standard ultrasonic level transmitters like the SUL804? A: Standard industrial transmitters (like the SUL804) require external power wiring (24V DC) and direct cable connections (4-20mA or RS485 Modbus) to a controller or PLC. The SUL650 is fully autonomous and wireless—it runs on an internal battery and transmits data via wireless protocols (LoRaWAN, 4G, or NB-IoT) directly to the cloud or server, making it ideal for remote or hard-to-wire locations.

Q: How do I choose between LoRaWAN, 4G, and NB-IoT versions?

A: Choose LoRaWAN if you already operate a local LoRa gateway or private LPWAN network with zero recurring SIM data fees. Choose 4G Cat-1 or NB-IoT if the sensor is installed in an isolated location that relies on standard cellular networks (requires a local SIM card).

Q: Can I connect the SUL650 directly to an INVT Frequency Inverter (VFD)? A: Because the SUL650 communicates via wireless IoT networks (LoRaWAN/4G/NB-IoT) to cloud endpoints, it does not output a direct 4-20mA analog signal. If you require real-time hardware feedback to an INVT VFD PID control loop via physical wiring, we recommend using our wired industrial sensors such as the SUL804 or SUL801.

Q: How long does the internal lithium battery last?

A: Battery lifespan depends on the configured reporting interval and selected wireless protocol (e.g., reporting once per hour yields significantly longer operational life than reporting every 5 minutes). The 3.6V lithium battery is standard and easily replaceable during routine maintenance.

Downloads

SUL650 Wireless Ultrasonic Level Sensor | LoRaWAN, 4G, NB-IoT –  Datasheet

 

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