Water Monitoring
ND-MBX Ultrasonic Distance / Level Sensor
What is the ND-MBX? The ND-MBX is a non-contact ultrasonic distance and level sensor based on time-of-flight measurement. Available in 0.5–10 m and 0.3–5 m variants with 1 mm resolution and 1 % accuracy, the contact-free design eliminates fouling, biofilm and sediment problems that plague pressure transducers — ideal for water level, open water surfaces, flood monitoring, wastewater management and tank level applications connected to the yDoc ML-525 datalogger.
The ND-MBX is a non-contact ultrasonic distance and level sensor based on time-of-flight measurement. Available in 0.5–10 m and 0.3–5 m variants with 1 mm resolution and 1 % accuracy, the contact-free design eliminates fouling, biofilm and sediment problems that plague pressure transducers — ideal for water level, open water surfaces, flood monitoring, wastewater management and tank level applications connected to the yDoc ML-525 datalogger.
Key parameters
What the ND-MBX measures
Distance / level
Ultrasonic time-of-flight, 0.5–10 m or 0.3–5 m variants
Non-contact
No fouling, no biofilm, no sediment problems
Resolution
1 mm resolution, 1 % accuracy or better (factory calibrated)
Direct integration
Connects to yDoc ML-525 over SDI-12 / Modbus
Specifications
Technical specifications
Applications
Where the ND-MBX is used
Water level
Long-term water-level monitoring of streams, channels and reservoirs without contact with the water.
Open water surface
Reservoirs, lakes, rivers and harbours where pressure sensors would foul.
Flood monitoring
Real-time level data for flood early-warning and stormwater systems.
Wastewater management
Level monitoring in pumping stations, manholes and treatment plant tanks.
Tank level
Industrial liquid storage tanks, silos and IBCs without piercing the vessel.
Integration
Powered by the yDoc ML-525 datalogger
The ND-MBX connects directly to the yDoc ML-525 datalogger. The yDoc powers the sensor, schedules measurements, stores readings locally and transmits them to the Sensor-Online platform via 4G/LTE-M, NB-IoT, LoRaWAN, satellite or Ethernet — with up to 10 years of battery life.
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FAQ
Frequently asked questions about the ND-MBX
What does the ND-MBX measure?+
When to choose ultrasonic over pressure?+
How does it integrate with the yDoc ML-525?+
Ready to deploy the ND-MBX?
Get a quote, technical advice, or a complete bundle with the yDoc ML-525 datalogger and Sensor-Online platform subscription.