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INT-RP-293: A calibration model for screen-caged Peltier thermocouple psychrometers


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.

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.

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


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Title: INT-RP-293: A calibration model for screen-caged Peltier thermocouple psychrometers
Publish Date: November 5, 2008
Last Update:
November 5, 2008

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