Dew condensation is ubiquitous but its consequences are mostly catastrophic for building, crops, electrical devices, aviation industry, air conditioning and pharmaceuticals, therefore detection and it’s monitoring at early or initial stage are critically required for its prevention which cannot be realized by current technologies. Moisture Sensor can detect a small water droplet and distinguish its size with high accuracy and quick response by the galvanic action upon water getting attached and bridging adjacent arrays composed of different metals. In this study, it was applied to detect dew condensation. The experimental results showed that Moisture Sensor could detect occurrence of dew condensation in initial and early stage with high accuracy in terms of dew point. Moreover, a stage prior to dew condensation, presumably adsorption of water molecules, was detected and distinguished quantitatively and accurately depending on the relative humidity below 100 % around the arrays. Moisture Sensor also takes advantage of modifying its surface status such as wettability and temperature. It suggests that this sensing method can be an alternative to conventional hygrometer, especially in a high relative humidity region and expect prediction or premonition of dew condensation, which occurs on the actual target.

结露无处不在，但其后果对于建筑，农作物，电气设备，航空业，空调和制药业来说，都是灾难性的，因此，对于预防和早期检测或早期监测至关重要，这是当前技术无法实现的。水分传感器可以检测微小的水滴，并通过在附着水并桥接不同金属组成的相邻阵列时的电流作用，以高准确度和快速响应来区分水滴的大小。在这项研究中，它被用于检测结露。实验结果表明，水分传感器能够以露点的高准确度检测出初期和早期的结露现象。而且，在结露之前的一个阶段，根据阵列周围低于100％的相对湿度，可以检测到并定量和准确地识别出大概是水分子的吸附。湿度传感器还利用修改其表面状态（如润湿性和温度）的优势。这表明，这种感测方法可以替代传统的湿度计，尤其是在相对湿度较高的区域，并且可以预期或预示在实际目标上发生的结露。