Wireless Fuel Level Sensor

Wireless Fuel Level Sensor – DUT-E S7

The DUT-E S7 wireless fuel level sensor provides reliable and accurate fuel volume monitoring in vehicle tanks, machinery, generators, and stationary fuel storage. Using Bluetooth Low Energy (BLE) communication, it enables fast installation where running signal cables is difficult or impractical.

The sensor sends fuel level data wirelessly to nearby telematics gateways, GPS tracking systems, BLE receivers, smartphones, or tablets. This makes it ideal for fleet vehicles, mobile plant equipment, and generator fuel monitoring systems. It also suits systems already connected to tracking infrastructure.

With no external power source required, the DUT-E S7 operates using a built-in battery that provides up to 10 years of maintenance-free operation. It delivers real-time visibility of fuel levels, refuelling events, and potential fuel theft activity when integrated into compatible monitoring platforms.

Metromatics can assist with confirming compatibility with existing telematics platforms commonly used across fleet and industrial monitoring deployments in Australia and New Zealand.

Is This the Right Wireless Fuel Sensor for Your Application?

This sensor is ideal when:

• running cables between tank and monitoring system is difficult
• installing on mobile equipment or fleet vehicles
• retrofitting existing tanks
• integrating with telematics or GPS tracking platforms

A GSM fuel level sensor may be more suitable if:

• monitoring isolated tanks
• no gateway exists nearby
• direct cloud monitoring required

Key Features

• 📡 Wireless Communication
  Transmits data over Bluetooth 5.x (BLE) to telematics units, smartphones, tablets, and BLE-compatible gateways.

• 🔋 Self-Powered Operation
  Built-in battery offers 5–10 years of life depending on transmission intervals and environmental conditions.

• 🛠️ Easy, Cable-Free Installation
  No wiring required — reducing installation time, improving security, and minimising the risk of vandalism or tampering.

• 📏 Flexible Probe Lengths
  Available in standard lengths (700 mm, 1,000 mm) and extendable up to 3,000 mm to suit a wide range of fuel tank sizes.

• 🧠 Smart Data Reporting
  Sends fuel volume, temperature, and refuelling/draining events at customisable intervals (default: every 5 seconds).

• 💥 Explosion-Proof Certified
  Safe for use in fuel tankers, depots, and hazardous environments — certified to international Ex standards.

• 📱 Mobile App Integration
  Compatible with our Supplier’s Fuel Tank Monitor App for real-time viewing, configuration, and notifications.

• 🔧 Cut-to-Length Installation
  Probe can be trimmed on-site to match the exact tank depth for accurate measurement.

Why Choose Our Wireless Fuel Monitoring Solution?

• Real-Time Updates: Provides instant insights into fuel levels.
• Seamless Integration: Bluetooth connectivity ensures compatibility with a range of modern devices.
• Flexible Applications: Suitable for both mobile and stationary fuel storage.
• Durable Build: Engineered to withstand challenging environmental conditions.
• Low Maintenance: Wireless setup minimises wear and tear, ensuring reliable long-term usage.

Fuel Tank Smartphone App

The Fuel Tank Smartphone App for the DUT-E S7 is available from Google Play or the Apple App Store. Firstly, the driver can check volume refills, how much is left in the tank and alarms if any is stolen. Plus, it allows fleet managers to record fuel volume in the tank when transferring the vehicle from a driver to another.

Fuel Tank App Features include

• Information about the sensors including serial number, firmware version and address within S7 network
• Sensor Calibrations on whether tank is full or empty
• Fuel Tank Calibration Table
• Self-Diagnostics information
• Data logging from DUT-E S7 Fuel Level Sensor

Wireless vs GSM Fuel Level Sensors

Wireless BLE fuel level sensors are ideal when:

• installing on fleet vehicles
• monitoring mobile plant
• integrating with telematics platforms
• running cables is difficult

GSM fuel monitoring sensors are better suited when:

• monitoring remote stationary tanks
• no gateway exists nearby
• standalone cloud monitoring required

Contact Metromatics if unsure which architecture suits your installation.

Specifications on the DUT-E S7 Fuel Level Sensor

Applications

🚛 Fleet & Transport

• Fuel level monitoring in long-haul trucks, delivery vehicles, and buses

• Ideal for fleets requiring quick, cable-free sensor installations

• Prevents fuel theft and supports route-based consumption analysis

🏗️ Construction & Heavy Equipment

• Tracks fuel usage in generators, excavators, and mobile equipment

• Enables rapid sensor deployment without complex cabling

🚜 Agricultural Machinery

• Manages diesel and biodiesel use in tractors, harvesters, and irrigation pumps

• Helps monitor consumption during seasonal operations

🛢️ Stationary Fuel Storage

• Wireless monitoring for tanks connected to nearby telematics gateways or BLE receivers

• Ideal for refuelling stations, depots, and industrial fuel tanks

🛳️ Fuel Tankers & Marine

• Provides safe, wireless fuel tracking for onboard tanks

• Explosion-proof design ensures safety compliance

How Wireless Fuel Level Monitoring Works

The DUT-E S7 transmits fuel level data using Bluetooth Low Energy communication to a nearby receiver such as:

• GPS tracking devices
• BLE gateways
• smartphones or tablets
• fleet monitoring controllers

Typical system architecture:

Sensor → BLE receiver → monitoring platform → alerts and reporting dashboard

Installation & Integration

The DUT-E S7 mounts using a standard 5-bolt flange.  Therefore, allowing straightforward replacement of existing fuel level sensors or installation at new tank access points. The probe can be trimmed on site to match the exact tank depth.  Or extended up to 3,000 mm using optional extension sections to suit a wide range of fuel tank sizes.

Configuration and calibration are completed wirelessly via Bluetooth Low Energy (BLE) using a smartphone or tablet.  Therefore, reducing installation time and eliminating the need for specialised service tools or wired connections. During operation, the sensor transmits fuel level data to a nearby telematics gateway, GPS tracking unit, or BLE receiver.  Therefore, enabling remote fuel monitoring through compatible fleet or asset management platforms.

Compatible Accessories

• Mounting Kit (MK DUT-E) – For secure sensor installation and sealing

• Probe Extension Sections – Extend probe length up to 3,000 mm

• Fuel Tank Monitor Mobile App – For sensor data viewing and configuration

• BLE Gateways – For cloud-based fleet integration (optional)

Enhance your fuel tracking and management with our Wireless Fuel Monitoring Device. Contact Metromatics to confirm compatibility with your telematics system or fuel tank installation.

Other Fuel Monitoring Sensor Options

FAQs

Q: How does the wireless fuel monitoring device operate?
A: The device uses Bluetooth technology to transmit real-time fuel level data to connected devices such as smartphones or PCs. It can also integrate with GPS trackers for comprehensive tracking.

Q: Is the device suitable for all tank types?
Yes. The DUT-E S7 operates in metal and plastic tanks. However, underground installations require a nearby BLE receiver or gateway.

Q: What are the power options for the device?
A: It can be powered either by an internal battery or an external power source, depending on installation needs.

Q: Can this device help prevent unauthorised fuel use?
A: Absolutely. It provides real-time alerts for unusual fuel level changes, aiding in fuel theft detection and prevention.

🔧 BLE Module Activation and Operating Modes – DUT-E S7

The DUT-E S7 sensor operates in three different modes, depending on the state of its built-in Bluetooth Low Energy (BLE) module:

1. Safekeeping Mode (Factory Default)

• This is the default mode after manufacturing.

• The BLE module is deactivated, and the sensor does not transmit any data.

• Used for storage and shipping.

2. Technological Mode (Temporary Setup Mode)

• Allows limited access to check the sensor’s serial number and firmware version via the S7 app.

• To activate:

  • Touch a permanent magnet to the sensor head cap.

  • The sensor will remain in this mode for 4 hours or until the magnet is applied again.

  • After that, it automatically returns to Safekeeping Mode.

3. Working Mode (Full Operation Mode)

• This is the main mode for sensor installation and operation.

• BLE becomes fully active and stays on for the entire lifetime of the sensor.

• In this mode, you can configure the sensor and monitor fuel data via the DUT-E S7 Service App.

To activate Working Mode:

1. Use a small screwdriver to touch both metal tubes on the measuring probe (creating a short circuit).

2. At the same time, touch a permanent magnet to the sensor head cap.

Once in Working Mode, the sensor cannot revert to any other mode.