✦ LIBER ✦

A dewpoint hygrometer for water potential measurement

✍ Scribed by Eric C. Campbell; Gaylon S. Campbell; Wayne K. Barlow

Publisher: Elsevier Science
Year: 1973
Weight: 393 KB
Volume: 12
Category: Article
ISSN: 0002-1571
DOI: 10.1016/0002-1571(73)90012-5

No coin nor oath required. For personal study only.

✦ Synopsis

An improved instrument for determining water potential by measuring dewpoint depression has been developed. Theoretical considerations show the instrument to have a sensitivity of 0.75 uV bar -~ and a change in sensitivity with temperature of 0.45% °C-~. Without compensation for changes in Peltier cooling, sensitivity, and heat dissipation with temperature, errors of +-6% result from changing the temperature of the sensor between 20 and 50°C. Performance of the instrument appears to agree well with the theory developed for the technique.

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