Real-Time Liquid Level Monitoring with IoT Ultrasonic Sensors

Across industries — from fuel distribution and fleet operations to agriculture, manufacturing, and facilities management — liquid tanks are everywhere. Diesel, oil, DEF/AdBlue, coolants, lubricants, water, waste oil, and chemical storage tanks are critical to daily operations.

Yet most organizations still have no idea what's inside their tanks until someone physically checks — or until they run out.

Operations teams needed a way to:

• Monitor liquid levels across all tank types in real time
• Prevent run-dry events that cause equipment downtime or service disruption
• Detect unexpected consumption, leaks, or theft
• Optimise delivery and collection schedules based on actual usage
• Eliminate manual tank checks at remote or hard-to-access sites

Without installing expensive wired infrastructure or adding recurring cellular costs to every tank.

The Challenge

Liquid tanks are often located at remote sites, spread across large properties, or installed in locations that are difficult and time-consuming to inspect manually. Level checks were infrequent — sometimes weekly or monthly — leaving long gaps in visibility.

This created:

• Emergency refills and deliveries at premium cost
• Equipment and generator downtime from empty fuel tanks
• Undetected slow leaks or unexplained consumption
• Overfilled tanks causing spills and environmental risk
• Inaccurate inventory records and unreliable forecasting
• Wasted truck rolls for deliveries to tanks that weren't ready

Management had no centralised view of tank levels across their sites, making proactive planning impossible.

The Deployment

Each tank was fitted with a battery-operated, industrial-grade LoRaWAN ultrasonic level sensor.

The sensor uses ultrasonic technology to accurately measure the liquid level inside each tank and wirelessly transmits readings to the EdgeKinect Vision cloud platform via LoRaWAN.

The sensors continuously monitor:

• Liquid level (volume and percentage)
• Rate of consumption over time
• Sudden level changes indicating leaks, theft, or abnormal usage
• Low and high level thresholds for automated alerting

Sensors were deployed across a range of liquid types including:

• Diesel, oil, and kerosene fuel tanks
• DEF / AdBlue storage for fleet operations
• Coolant and lubricant reservoirs
• Water and wastewater holding tanks
• Waste oil collection tanks

Installation was fast and non-invasive — sensors mount directly to the tank with no wiring, no plumbing modifications, and no specialist tools required.

The Result

After deployment across the fleet of tanks:

• Run-dry events were virtually eliminated
• Delivery schedules were optimised based on real consumption data, not estimates
• Suspected theft and unexplained losses were identified at specific sites
• Overfill incidents and spill risks dropped significantly
• Manual tank checks were eliminated entirely at monitored sites

Operations teams shifted from reactive emergency response to proactive, data-driven tank management.

Why This Worked

The success came from combining accurate, maintenance-free sensing with long-range wireless connectivity and a centralised dashboard.

The organisation gained:

• Real-time tank visibility across every site from a single platform
• Automated alerts before tanks reached critical levels
• Verified consumption data to support billing, compliance, and planning
• Optimised logistics — fewer truck rolls, better route planning, reduced fuel spend
• Scalable deployment with no recurring SIM or cellular costs per sensor

Instead of guessing what was inside a tank, teams had continuous, verified data.

The Technology Behind the Success

The solution worked because it combined proven ultrasonic sensing with long-range IoT connectivity:

LoRaWAN Ultrasonic Level Sensors:

• Accurate ultrasonic level measurement for a wide range of liquids
• Integrated LoRaWAN radio — no external antennas or gateways per tank
• Battery operated with multi-year battery life
• Compact, weatherproof, and easy to install
• Remote configurability — adjust settings without site visits
• Compatible with diesel, oil, kerosene, DEF/AdBlue, coolants, lubricants, water, waste oil, wastewater, and select chemicals

LoRaWAN Network:

• Long-range communication up to 15 km
• Low-power operation for extended battery life
• Reliable coverage across remote, outdoor, and industrial environments
• Cost-effective for large-scale, multi-site deployments

EdgeKinect Vision Dashboard:

• Real-time tank level views across all sites on a single platform
• Interactive maps showing tank locations and current levels
• Low and high level alarms via email, SMS, and dashboard notifications
• Historical usage trends and consumption analytics
• Exportable reports for inventory management, billing, and compliance

Impact

This deployment delivered measurable improvements in:

• Operational uptime — no more downtime from empty fuel or fluid tanks
• Delivery and logistics efficiency — routes planned on real data, not schedules
• Loss prevention — theft, leaks, and unexplained consumption identified early
• Inventory accuracy — real-time levels replacing manual spreadsheets and estimates
• Environmental compliance — overfill and spill risks reduced significantly

Most importantly, it turned every liquid tank into a connected, managed asset — giving operations teams the visibility and control needed to run efficiently, reduce waste, and protect their bottom line.

Ready to Monitor Your Tanks in Real Time?

Our IoT Liquid Level Monitoring solution provides real-time visibility, automated alerts, and actionable intelligence for any liquid, any tank, any site.

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