An Investiagtion of Thermocouple Psychrometer, I

Abstract

Properties and use of thermocouple psychrometers consisted of fine wires of constantan and manganin have been studied. In Part I various effects on psychrometric measurements have been examined experimentally such as transference of heat through wires and also through air between dry- and wet-junctions, ventilation, lag of indication, and conditions have been shown to avoid misleading causes. The thermocouple psychrometer is of rapid response owing to its small thermal capacity, and its wet-junction is cooled sufficiently by slight ventilation mostly due to its small size which makes effect of radiation on wet-junction small.