Test & measurement


it challenging to measure fast enough, which means that operators risk relying on falsely high humidity readings. In turn, this could lead to over-drying of the air and wasting a lot of energy. Vaisala claims that its dew point sensors have a response speed up to many times faster than competing products. Accurate, fast-response sensors therefore help to optimise the efficiency of DHUs so that they only dry air as much as is necessary. This lowers both energy consumption and operational costs. The ability to measure in real-time over a single rotation enables better control of humidity and costs.


Instrumentation Monthly January 2025


However, a further benefit can be achieved by comparing accurate data from each cycle, to iden- tify small anomalies before they escalate into bigger problems. This supports predictive maintenance and condition-based maintenance, both of which further reduce operating costs – as well as the headaches caused by potential product quality issues. In addition to the accuracy and fast response of a dew point sensor, low drift and long-term reliability are also essential features of sensors in environments like battery manufacturing where sensor failure could compromise production quality


and safety, affecting issues such as charging speed and range in EVs for example.


In summary, an investment in accurate, reliable, fast-response sensors would be negligible in comparison with the cost savings and other benefits that it would deliver. In addition, at Vaisala we firmly believe that a compromise on sensor quality would not be worth the risks associated with the potential effects on battery yield and quality.


Vaisala www.vaisala.com 35


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