Korpinen Leena H, Kuisti Harri A, Tarao Hiroo, Elovaara Jarmo A
Environmental Health, Tampere University of Technology, Tampere, Finland.
Bioelectromagnetics. 2013 Jul;34(5):414-8. doi: 10.1002/bem.21776. Epub 2013 Jan 11.
The objective of the study was to investigate the influence of humidity on analyzing electric field exposure using extremely low frequency (ELF) electric field measurements. The study included 322 measurements in a climate room. We used two commercial three-axis meters, EFA-3 and EFA-300, and employed two measurement techniques in the climate room where we varied the temperature from 15 to 25 °C, the relative humidity from 55% to 95%, and the electric field from 1 to 25 kV/m. We calculated Pearson correlations between humidity and percentage errors for all data and for data at different levels of humidity. When the relative humidity was below 70%, the results obtained by the different measurement methods in terms of percentage errors were of the same order of magnitude for the considered temperatures and field strength, but the results were less reliable when the relative humidity was higher than 80%. In the future, it is important to take humidity into account when electric field measurement results will be compared to the values given in different exposure guidelines.
该研究的目的是通过极低频（ELF）电场测量来调查湿度对电场暴露分析的影响。该研究在气候室中进行了322次测量。我们使用了两台商用三轴测量仪，EFA - 3和EFA - 300，并在气候室中采用了两种测量技术，在该气候室中，我们将温度从15℃变化到25℃，相对湿度从55%变化到95%，电场从1 kV/m变化到25 kV/m。我们计算了所有数据以及不同湿度水平数据的湿度与百分比误差之间的皮尔逊相关性。当相对湿度低于70%时，对于所考虑的温度和场强，不同测量方法在百分比误差方面获得的结果具有相同的数量级，但当相对湿度高于80%时，结果的可靠性较低。未来，当将电场测量结果与不同暴露指南中给出的值进行比较时，考虑湿度是很重要的。
