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  1. A calibration model for screen-caged Peltier thermocouple psychrometers

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    Author(s): Ray W. Brown; Dale L. Bartos
    Date: 1982
    Source: Res. Pap. INT-293. Ogden, UT: US. Department of Agriculture, Forest Service, Intermountain Forest and Range Experimental Station. 155 p.
    Publication Series: Research Paper (RP)
    Station: Intermountain Forest Experiment Station
    DOI: https://doi.org/10.2737/INT-RP-293
    PDF: View PDF  (6 MB)

    Description

    A calibration model for screen-caged Peltier thermocouple psychrometers was developed that applies to a water potential range of 0 to-80 bars, over a temperature range of 0° to 40° C, and for cooling times of 15 to 60 seconds. In addition, the model corrects for the effects of temperature gradients over zero-offsets from -60 to + 60 microvolts. Complete details of model development are discussed, together with the theory of thermocouple psychrometers, and techniques of calibration and cleaning. Also, information for computer programing and tabular summaries of model characteristics are provided.

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    Citation

    Brown, Ray W.; Bartos, Dale L. 1982. A calibration model for screen-caged Peltier thermocouple psychrometers. Res. Pap. INT-293. Ogden, UT: US. Department of Agriculture, Forest Service, Intermountain Forest and Range Experimental Station. 155 p.

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    Keywords

    thermocouple psychrometers, calibration, modeling, water potential, temperature gradient effects, Peltier cooling, screen-caged psychrometers, psychrometer calibration model

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