Effect of Purging Rate on the Calibration of Dew Point Sensor and the Estimation of Measurement Uncertainty
The purpose of this paper is to study the effect of purging rate on calibration or test of the dew point sensors and estimation of measurement uncertainty. The measurement is carried out to analyze the variation on measured dew point temperatures for the sample dew point sensors (DPS) due to various durations of purge by using calibrated standard chilled mirror hygrometer. To set up measurement condition, the whole measurement system were kept in the state of purging for 3 hours, 15 hours, 65 hours, 140 hours, 200 hours. The dew point temperatures were measured in the range from-50 °C to 10 °C. In order to investigate the effect of purging rate as an uncertainty source on the measurement uncertainty, the contributions to the standard uncertainty for purging rate were also estimated due to reference dew point temperatures. The measurement was conducted according to standard calibration procedure of Korea Testing Laboratory which assures suitability and traceable results. It is also based on international standards.
Bale V. Reddy, Shishir Kumar Sahu, A. Kandasamy and Manuel de La Sen
Y. K. Bae and D. H. Hyun, "Effect of Purging Rate on the Calibration of Dew Point Sensor and the Estimation of Measurement Uncertainty", Applied Mechanics and Materials, Vol. 627, pp. 161-167, 2014