Humidity sensors

Humidity sensors in electronic devices usually work with capacitive measurement technology. They measure the change in electrical capacitance between two electrodes, which is influenced by humidity. The core element is a hygroscopic polymer that absorbs water molecules from the environment. This absorption changes the electrical permittivity of the material, which has a direct effect on the capacitance. Integrated electronics convert this change into an electrical signal that precisely reflects the relative humidity.

humidity sensors are characterized by high accuracy, fast response time and long service life. Such sensors can be integrated into printed circuit boards, controllers or sensor modules to save space. Humidity sensors of this type are used in many areas of industrial electronics - from automation and medical technology to air quality control.

As a distributor, Rotima offers customized solutions with Bourns' BPS series sensors for a wide range of applications.

Humidity sensors are used in a wide range of industrial applications - wherever humidity can affect function, quality or safety. Typical applications include the monitoring of control cabinets, data centers or production facilities where constant ambient conditions are required. Humidity sensors are also indispensable in the packaging industry, when processing hygroscopic materials or in clean rooms. They are used for process control, quality assurance and failure prevention. Precise measurements are particularly important in areas with sensitive components or sensitive measuring devices. Humidity sensors with capacitive technology provide stable and reliable values here, even with temperature fluctuations. Thanks to their compact design, they can be easily integrated into existing systems. As a distributor, Rotima supplies industrial partners with high-quality sensor solutions from Bourns that can be adapted to individual requirements - ideal for demanding environments and applications with high measurement dynamics.

Humidity sensors are essential in electronic systems, as excessive humidity can lead to malfunctions, corrosion or total failure. Electronic components such as circuit boards, chips or Connectors react sensitively to humidity. Even condensing air can cause short circuits or oxidation in closed housings. Humidity sensors help to detect such risks at an early stage and take countermeasures.

In modern systems, humidity sensors are not only used for monitoring, but also for actively controlling ventilation, dehumidification or heating cycles. Precise, capacitive measurement technology enables accurate humidity values to be recorded in real time. This is indispensable, especially in areas such as medical technology, automotive engineering or industrial control. Rotima helps customers integrate high-quality humidity sensors from Bourns that feature miniaturization and long-term stability - a critical factor for reliable electronic systems under changing environmental conditions.

Capacitive Humidity sensors offer several advantages over other measuring principles such as resistive or thermal Sensors. They enable continuous, linear and highly accurate measurement of relative humidity over a wide range. Due to their non-reactive measuring method, they are significantly more durable and more robust against environmental stresses. They are also characterized by a fast response time and low drift. The sensors require very little energy, which makes them ideal for use in battery-powered systems or miniature applications. Another advantage is their flexibility: the design can be adapted to specific requirements - whether for flat designs, integrated systems or extreme conditions. Rotima provides its customers with Bourns capacitive humidity sensors that combine these features. They not only provide accurate measurement data, but also a reliable and durable solution for industrial and electronic applications.

In the field of humidity sensors there are various technologies that differ in terms of measuring principle, design and area of application. The most common types are capacitive, resistive and hygrometric sensors. Capacitive humidity sensors dominate the market today, especially in industrial and electronic applications, as they offer high measurement accuracy and stability with low energy consumption. Resistive Sensors work via changes in conductivity, but are more susceptible to ageing and contamination. There are also sensors with integrated temperature components for combined measurements. Miniature sensors in SMD format are ideal for space-critical electronic applications. The BPS series from Bourns, which is distributed by Rotima, offers capacitive sensors in a compact design with individual adaptability. For new developments, products that enable long-term availability, high reliability and easy integration are particularly preferred - the solutions offered by Rotima fulfill exactly these requirements.