Reliable measurements start with reliable testing
An HVAC system can only perform as well as the data it receives. Every decision related to airflow, demand-controlled ventilation and indoor air quality depends on accurate sensor measurements. When sensor data is stable and precise, HVAC systems can operate more efficiently, maintain occupant comfort and support healthier indoor environments.
Temperature, relative humidity, CO₂, VOC and other environmental parameters directly influence how ventilation and climate control systems respond. Even a small measurement deviation can affect the operation of a complete HVAC installation, influencing energy consumption, comfort levels and indoor air quality. In real applications, HVAC sensors are exposed to changing temperatures, humidity fluctuations and environmental stresses that may influence measurement accuracy, product stability and long-term performance.
This raises an important question: How can HVAC professionals be confident that a sensor will continue delivering accurate measurements years after installation? At Sentera, reliability is not simply expected - it is engineered, tested and validated.
As a manufacturer of HVAC control solutions, Sentera develops both hardware and software internally. This integrated approach gives engineers control over the complete product development process, from sensor design and electronics to embedded software, product validation and environmental testing. By combining sensor design, electronics and software development, Sentera can optimize the complete sensor solution rather than evaluating individual components separately. One of the key tools supporting this approach is climate chamber testing.
Why climate chamber testing matters for HVAC sensors
A climate chamber enables engineers to recreate different environmental conditions in a controlled and repeatable way. By adjusting temperature and relative humidity, Sentera can simulate challenges that HVAC sensors may experience during operation, transport and storage. The purpose of this testing is not simply to expose products to extreme conditions. It is to understand how environmental factors influence the complete sensor design and verify that all components continue working together as intended.
During climate chamber testing, Sentera evaluates the accuracy and stability of measured parameters such as temperature, relative humidity, CO₂, VOC and other application-specific measurements. Measurement accuracy is only one part of long-term sensor performance. A professional HVAC sensor must also protect sensitive electronic components, maintain stable operation and withstand environmental stress throughout its service life.
For this reason, Sentera evaluates the complete product performance, including enclosure protection, electronic component performance, moisture resistance, condensation risks and long-term measurement stability. This complete-system approach ensures that sensors are not only performing correctly when leaving production, but continue delivering dependable measurements after years of operation in real HVAC applications.
Testing the complete sensor design The sensing element is the core of every HVAC sensor. It interacts directly with the surrounding environment to measure parameters such as temperature, humidity, pressure or gas concentration. At the same time, this creates an important engineering challenge: the sensing element must remain exposed to the environment, while sensitive electronic components inside the device require protection from external influences.
Finding the right balance between measurement performance and environmental protection is essential for long-term product performance. The enclosure, seals, gaskets and protective membranes all contribute to sensor durability. They must allow accurate measurements while protecting internal components from moisture, contamination and environmental stress.
Some Sentera sensors use specialized membranes that allow air exchange while preventing water ingress. These components require careful validation because they influence both measurement accuracy and product durability. During climate chamber testing, engineers evaluate the complete product - including sensing elements, electronics, enclosure design and software functionality - to verify that all parts operate together as intended. Testing the complete design rather than only individual components helps Sentera identify potential weaknesses before products reach customers.
How temperature and humidity influence sensor reliability
Electronic products are strongly influenced by the environment in which they operate. Understanding these effects is essential when designing sensors that need to deliver consistent performance over many years. High temperatures accelerate ageing processes in electronic components. Over time, this can reduce component lifetime and influence product stability. Low temperatures create different challenges. Some components may respond more slowly, displays can become less responsive and certain plastics or polymers may become more fragile. Repeated temperature changes can be even more demanding.
During thermal cycling, materials continuously expand and contract as temperatures rise and fall. Although these dimensional changes are small, repeated cycles create mechanical stress on solder joints, electrical connections and internal components. Over time, this stress may contribute to failures. Humidity introduces another important challenge.
High humidity can contribute to corrosion, especially when combined with dust or manufacturing residues. If moisture reaches sensitive electronic areas, it may also create electrical leakage or short circuits. By combining different temperature and humidity conditions inside the climate chamber, Sentera can reproduce realistic environmental stress scenarios and evaluate how products behave under demanding conditions. This testing approach helps identify potential weaknesses early in the development process and supports continuous improvement of sensor design, materials and protection methods.
Inside Sentera’s climate chamber testing process
Climate chamber testing is a key part of Sentera’s product validation process, allowing engineers to evaluate sensor performance under a wide range of environmental conditions. Depending on the product type, sensors are tested at temperatures ranging from approximately -10°C to 60°C and relative humidity levels between 10% and 90% RH.
During testing, engineers monitor product behaviour and compare sensor measurements with reference instruments or controlled values. For gas sensors, this includes testing with gas sources containing precisely defined concentrations. These measurements help engineers verify that sensor readings remain accurate and stable under different environmental conditions. Individual test conditions typically last between one and eight hours, while complete environmental validation campaigns may require several days. This detailed approach enables engineers to evaluate both immediate responses and the longer-term effects caused by environmental stress. The goal is not only to confirm that a product functions correctly, but to understand how it performs throughout its expected service life.
From test results to better products
Climate chamber testing is not simply a final quality check. It is an essential engineering tool that supports continuous improvement throughout the product development process. The results provide valuable information about how materials, electronic components, enclosure designs and software algorithms perform under different environmental conditions.
The insights gained during testing help engineers improve key aspects of product development, including:
- product design;
- component selection;
- environmental protection;
- thermal management;
- software compensation algorithms.
Because Sentera develops both hardware and software internally, knowledge gained from testing can be directly translated into product improvements. Every validation process contributes to stronger, more stable and more dependable HVAC solutions.
Why sensor reliability matters for HVAC professionals
For HVAC professionals, sensor performance directly influences the operation of the complete installation. A sensor that provides unstable or inaccurate measurements can affect ventilation strategies, energy efficiency and indoor comfort. For example, a CO₂ sensor in an office building continuously influences ventilation demand. If measurements are inaccurate, the system may provide too much or too little ventilation, affecting both indoor air quality and energy consumption. Reliable sensor data provides HVAC systems with the information needed to operate efficiently and intelligently. By validating products under controlled environmental conditions, Sentera helps customers reduce uncertainty before installation and throughout the lifetime of the system. For HVAC professionals, this means greater confidence during commissioning, fewer unexpected issues in operation and consistent system performance over time.
Engineering reliability before the product reaches the customer
At Sentera, quality is built into every stage of product development. By combining internal engineering expertise, software development, controlled testing environments and continuous improvement, Sentera creates HVAC control solutions designed for dependable operation in real-world conditions. Climate chamber testing is one of the ways Sentera transforms engineering assumptions into verified performance.
For Sentera, testing is not simply about proving that a product works. It is about creating HVAC solutions that professionals can trust throughout the entire lifetime of an installation. Because reliable control starts with reliable data. And reliable data starts with sensors that are designed, tested and validated for the environments where they operate.