
There are several apps available that use fuel tank sensors to monitor fuel levels and provide alerts when fuel is low or when there is unusual activity. For example, the Levno app monitors fuel levels and sends alerts when fuel leaves or enters the tank. Similarly, the Crystal Flash Tank Monitoring System uses cellular signals to provide precise data on fuel levels and can be accessed through a smartphone app. The Fuel Tanks Monitor app is another example of an app that displays information about fuel levels and sends notifications when the tank is being filled or discharged. These apps provide convenience and peace of mind by allowing users to monitor their fuel levels and receive alerts from anywhere with an internet connection.
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What You'll Learn

Fuel level sensors
Levno for Fuel is one such product, which uses a fuel sensor/probe installed on top of the tank to monitor changes. This data is transmitted back to the cloud and can be accessed via the Levno app, allowing users to view live data and set alerts for refills, low levels, and unusual activity. Levno is also used by fuel distribution companies to work out their logistics, delivery schedules, and usage trends.
Another example is the DUT-E S7 wireless fuel level sensor, which can be used with the "Fuel Tank Monitor" app for iOS devices. This sensor has the advantage of wireless connectivity, allowing data to be transferred simultaneously to multiple devices via BLE (Bluetooth Low Energy).
Technoton also offers fuel level sensors for sea and river vessel telematics, diesel generator monitoring, fuel storage tanks, and various other industrial applications.
Reventec provides another option, offering both standard and bespoke fuel level sensors designed according to the customer's requirements.
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Fuel tank monitoring systems
One such system is Levno, which uses a fuel sensor with a probe attached that sits inside the tank. This sensor communicates with a transceiver located at a minimum of 5m distance from the tank. The transceiver then transmits data to the cloud, which can be viewed on the Levno dashboard. Alerts can be set up to notify users of refills, low levels, and unusual activity, such as fuel theft. Levno is also used by fuel distribution companies to optimise their logistics and delivery schedules.
Another example is the Xact Remote Fuel Tank Monitoring System, which uses satellite or cellular telemetry to provide fill level readings accessible on any internet-connected device. Xact offers gauge readers, submersible systems, and ultrasonic tank level sensors to provide accurate and reliable readings.
There are also other options available, such as the Veeder-Root TLS-450PLUS Automatic Tank Gauge, which provides comprehensive site data for fuel asset management, and the Fuel Tank Monitor app for iOS devices, which displays data from wireless fuel level sensors. These systems offer remote monitoring, notifications, and data insights to improve efficiency and security.
Overall, fuel tank monitoring systems provide valuable insights into fuel levels, helping to optimise operations, improve security, and reduce costs associated with inconsistent records or emergency fuel trips.
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Wireless fuel level sensors
The DUT-E S7 sensor has multiple operation modes, including "Safekeeping," where the sensor is preserved with a deactivated BLE module, and "Working," where the sensor operates with full functionality. The "Working" mode can be enabled by using a small screwdriver and a permanent magnet, allowing users to adjust configurations and monitor sensor values.
Another popular option for wireless fuel level monitoring is the OEM 7000 Wireless Fuel Level Monitor, available on Amazon. This product has received positive reviews for its ease of setup and functionality, particularly for tanks located in hidden or hard-to-reach spots. It offers a visual and audible warning when fuel levels are low, and multiple receivers can be set up to receive data from a single transmitter.
In addition to these options, Westell Technologies offers a remote monitoring wireless fuel level sensor suitable for diesel and propane tanks. This sensor boasts an impressive wireless range of 1,200 feet and an exceptionally long battery life of approximately 23 years.
One such application is the Levno Fuel Monitoring solution, which uses a fuel sensor installed on a valve at the top of the tank. This sensor communicates fuel level data to the Levno app, allowing users to track refills, withdrawals, and unusual activity. Levno also helps deter fuel theft by providing alerts for out-of-hours withdrawals and significant volume changes.
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Fuel tank calibration
Fuel level sensors are very popular tools for fuel consumption monitoring in the GPS tracking industry. The installation process is crucial, with sensor calibration and tank calibration being very important stages. All existing fuel level sensors measure level, not volume. However, most customers want to see fuel volume in reports. To calculate fuel volume, the shape of the tank must be known. In fact, fuel tank calibration is the calculation of the shape and formula to convert fuel level into fuel volume. This is done by filling the tank with small portions of fuel and recording the sensor output.
Tank calibration is a time-consuming procedure. The tank is filled from empty to full, with the sensor output recorded at various stages. The number of times this must be done depends on the shape of the tank. For tanks with a constant cross-sectional width, two points are sufficient – full and empty. For other shapes, more data points are required. The tank calibration results can be plotted on a graph.
If you are using a digital FLS, you can take the values for the X column from the configurator (a special application for fuel level sensors). The table should contain as many rows as you conditionally divide the tank into parts, as well as an additional row corresponding to a volume of 0 litres. Write down the start time of the calibration. Divide the entire volume of the tank into 10-20 parts. Pour a part of the fuel and enter the resulting fuel volume in litres in the Y column. Wait 2-3 minutes until the fuel level in the tank becomes even and the tracker records a few messages. Repeat the previous step until you fill the entire tank.
There are also apps available that can be used to monitor fuel tank levels. For example, the "Fuel Tank Monitor" application is used for configuring and displaying data from DUT-E S7 wireless fuel level sensors and is available for iOS devices. Levno is another app that constantly monitors the level of fuel in your tank and provides alerts for refills, withdrawals, low levels, and unusual activity.
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Fuel theft prevention
Fuel theft is a widespread problem that affects many industries, including farming, construction, transportation, and homeowners. The rise in fuel prices has only exacerbated the issue, with the average fuel tank holding over $4000 worth of fuel. To prevent fuel theft, a multi-pronged approach is necessary, combining anti-theft measures, technology, and proactive strategies. Here are some detailed methods to prevent fuel theft:
Secure Fuel Tanks
The first line of defence is to secure fuel tanks. This includes using locking gas caps, which are designed to prevent unauthorised access to the tank. While locking caps can vary in sturdiness, they are not foolproof and should be combined with other measures. Fuel tank anti-siphons are another effective addition, as they prevent siphoning by blocking hoses from reaching the fuel. Additionally, consider investing in a modern, high-quality tank with enhanced security features. Double-walled tanks provide an extra layer of protection by keeping fuel behind two walls, making it harder to access. Ensure that all equipment related to the fuel tank is fully contained in a secure, lockable cabinet.
Implement Fuel Management Technology
Fuel management technology allows you to closely monitor fuel usage, track fuel consumption, and predict future needs. By restricting fuel dispensing to authorised users, you can prevent theft and gain better control over your fuel inventory. Fuel management systems also help identify unusual activity and ensure efficient fuel distribution.
Install Surveillance and Alarm Systems
Surveillance cameras and motion sensors provide an effective deterrent to fuel theft. Security cameras can detect suspicious activity and alert you to potential threats. Combine this with adequate lighting across your site, especially in areas like entrances, exits, and delivery zones. Additionally, consider installing a fuel tank alarm system that notifies you of any attempts to tamper with the fuel tank.
Reduce Access Points and Implement Secure Perimeter Fencing
Limit the number of access points to fuel depots and keep gates locked at all times. Implement perimeter fencing that meets Secured by Design (SBD) approved standards to enhance security. Ensure that any locking mechanisms, such as padlocks or keys, also comply with SBD standards to prevent unauthorised access.
Educate Drivers and Enforce Company Policies
Educating drivers and employees about the risks of fuel theft is essential. Implement company policies that prohibit stops in high-crime areas and encourage safe and secure practices. Additionally, defensive parking strategies, such as parking close to walls or other vehicles, can make it more difficult for thieves to access fuel tanks.
Use Fuel Monitoring Apps
Fuel monitoring apps, such as Levno, provide real-time visibility over your fuel tanks. These apps alert you to refills, withdrawals, low levels, and unusual activity. By setting customised alerts, you can be notified immediately when larger-than-normal volumes of fuel are withdrawn or when out-of-hours withdrawals occur. This helps you stay proactive and responsive to potential theft.
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Frequently asked questions
The Levno app provides fuel tank level monitoring. It is constantly monitoring the level of fuel in your tank and you can set up refill alerts. It is a proven deterrent for thieves as you can set alerts to notify you when fuel leaves the tank.
The Levno app works by using a fuel sensor/probe that is installed on a valve on top of the tank. The probe sits inside the tank and monitors changes in the tank, communicating these to the transceiver, which is located at a minimum of 5m distance from the tank.
The Fuel Tank Monitor app is used for configuring and displaying data from DUT-E S7 wireless fuel level sensors. It is available for iOS devices.
The Crystal Flash Tank Monitoring System uses cellular signals to provide precise data on the level of fuel in tanks. It connects to the Crystal Flash app, available on Google and iOS app stores, and allows you to check your tank level anytime, from anywhere.
There are other fuel tank monitoring apps available on Google Play, such as the Fuel Tanks Monitor app, which displays accurate fuel level, volume, temperature and notifications on fuel tank fill-up or fuel draining.











































