Continuous technological innovation creates success

This year marks the 50th anniversary of HUMICAP technology, an important milestone in Vaisala’s history to celebrate. Dr. HUMICAP Technology was developed in 1973 and is widely used in the field of humidity measurement.

The solution was first applied to weather stations and then to radiosondes and industrial measurement equipment. Vaisala is currently producing the sixth generation HUMICAP. Although the appearance is largely unchanged, all materials and manufacturing processes have been improved several times.

HUMICAP – Little giant

HUMICAP is an important tool in industrial measurement due to its reliability and accuracy. It has helped Vaisala make progress in its research and development and achieve the success it has today. This demonstrates Vaisala’s strength in technological innovation.

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Since then, Vaisala has gradually become a equipment producer in the relative humidity measurement market, and thin film capacitive humidity sensors have evolved from a company innovation to a standard. HUMICAP – The little giant is famous all over the world.

“HUMICAP itself is an important technology for us. We are proud of Vaisala’s commitment to developing and improving HUMICAP over the years. DRYCAP® and PEROXCAP® are based on the same underlying technology developed by HUMICAP and are already widely used in various industries from manufacturing to healthcare. These typical examples can provide lessons for the development of new technologies.” Lars Stormbom, Senior Product Manager, Vaisala Industrial Measurement.

“Humidity can affect many processes and situations. As a result, HUMICAP has a wide range of applications, especially where humidity conditions require a high degree of precision management. In addition to radiosondes and weather stations, HUMICAP sensors are used in temperature and process measurements, life sciences, the semiconductor industry and more, “Lars continued.

History of HUMICAP

The work was initiated in 1971 by Yrjo Toivola, then Vaisala’s general manager. The aim is to work on techniques for measuring the relative humidity of the atmosphere, with the aim of integrating humidity sensors into Vaisala’s ground-based weather stations and hopefully eventually adding them to radiosondes. Toivola entrusted the work to the Finnish Technical Research Center (VTT), where Suntola was completing his doctoral thesis at the time.