Full control over your heat management
Large-scale monitoring and smart temperature measurement of your heat storage with our sensor foils
In Germany, the heating sector accounts for more than 50% of total energy consumption. In private households, heating applications account for almost 90% of energy demand (source: Umweltbundesamt).
Against the backdrop of rising energy costs, increasing sustainability requirements, and growing digitalization, the energy efficiency of heating systems is becoming increasingly important. Accurate temperature measurement in heat storage tanks plays a crucial role in this. Only by knowing the exact temperature stratification in heat and buffer storage tanks can charging and discharging processes be controlled efficiently and energy losses minimised.
One of the biggest challenges in heat management: the exact state of charge is unknown – in other words, how much energy is currently stored in the thermal storage?
Traditional sensors only measure at a few points and do not provide a complete picture of the temperature distribution within the buffer tank.
However, precise and comprehensive knowledge of the temperature profile is crucial for demand-driven, resource-efficient and grid-optimised control of charging and discharging processes.
Solution: Flexible, self-adhesive temperature sensors for heat storage tanks from Flexora
Our sensor solution enables large-area, comprehensive, and non-invasive temperature monitoring within the heat storage tank using adhesive films and provides complete transparency regarding the thermal conditions in the system.
The temperature stratification can be captured precisely and evaluated in real time, allowing the load status of the thermal storage unit to be determined with exact accuracy. Charging and discharging processes can thus be optimally adjusted to actual demand. For intelligent, resource-efficient load management and maximum energy efficiency.
“Installed in just 20 minutes with no hassle and connected to a tablet PC, the Flexora One kit now provides me with various visualizations of the temperature in my buffer storage tank.”
Take advantage of our sensor foils for your heat storage
Benefits for energy and heat analysts:
✅ More data for heat planning or ISO 50001
✅ Temporary or permanent monitoring without interrupting operations
✅ Easy installation via adhesive or magnetic mounting
✅ Direct data transmission via Wi-Fi or LTE
Benefits for energy suppliers and network operators:
✅ Remote monitoring of transfer stations in local and district heating networks
✅ Load shifting via digital buffer storage (power-to-heat)
✅ Easy retrofitting with direct integration into the control system
✅ Increased system predictability
Benefits for building and property managers:
✅ Greater transparency across all systems
✅ Centralized monitoring of hot water temperatures
✅ Early detection of faults before tenants report them
✅ Data-driven optimization of operating costs
Benefits for plant engineers and component manufacturers:
✅ Competitive advantage through smarter, more advanced products
✅ Easy integration of sensor technology via standard interfaces
✅ OEM and white-label solutions
✅ Added value that impress your customers
Benefits for specialist energy and heating engineers:
✅ Higher energy efficiency through optimized control strategies
✅ Digital building planning and BIM models
✅ Reduced project effort
✅ Remote maintenance and future planning data available from the outset
Benefits for installers and integrators:
✅ Install 7 or 24 sensors in just 2 minutes
✅ Easy integration without any wiring effort
✅ Faster project execution
✅ Strong competitive advantage in tenders
The accuracy of temperature measurement determines the efficiency of your thermal storage. A look at our simulation shows how this technology can significantly boost the performance and flexibility of thermal storage systems. In our blog article, you can find out why precise, large-area measurement data is essential for intelligent load management, power-to-heat applications, and smart building automation.
How you can maximize energy efficiency in heating systems with our sensor solution
Simple and non-invasive application of the sensor foil
The 0.5 mm thin, self-adhesive sensor film is applied between the insulation and the storage tank wall. Installation is completely non-invasive – without drilling, without interrupting ongoing operations, and without any additional wiring effort. The installation for the temperate measurement is completed within just a few minutes.
Large-area temperature measurement
Temperature sensors integrated into the foil continuously capture large-area temperature profiles across the entire height of the storage tank. This provides a detailed, spatially resolved view of the thermal stratification within the tank.
Wireless data transmission via IoT device
At the end of the film, an IoT device aggregates all data and transmits it wirelessly (BLE, WiFi, MQTT) or via cable (MODBUS RTU/TCP) – for seamless integration into any building management system.
Visualization and determination of the charge status
The collected data can be visualized in a dashboard, providing a transparent view of the current charge status and the thermal stratification of the storage tank on site.
Intelligent optimization
Based on high-resolution real-time data, control algorithms can manage the charging and discharging processes according to demand. This enables automated optimization of energy flows and sustainably reduces energy consumption, costs, and CO₂ emissions.
Digitize your heat storage tank with us
Our sensor foil transforms thermal storage units into digitalized systems that enable intelligent heating control. The recorded data on the charge status can be accessed and visualized at any time.
Charging statuses can be controlled remotely at any time, malfunctions can be detected early, and maintenance measures can be planned proactively before efficiency losses or system failures occur. Furthermore, the intelligent networking of various energy generators and the automated optimization of your energy flows can be achieved.
This way, your thermal storage becomes part of a digital, connected energy management system.
Advantages of digitalization with our sensor foil:
✅ Integration with smart home or smart grid systems
✅ Remote monitoring
✅ Predictive maintenance

