A calibration model for screen-caged Peltier thermocouple psychrometers
Abstract
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.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1982
- Bibcode:
- 1982STIN...8316735B
- Keywords:
-
- Calibrating;
- Psychrometers;
- Thermocouples;
- Cleaning;
- Computer Programs;
- Mathematical Models;
- Moisture Content;
- Peltier Effects;
- Temperature Gradients;
- Instrumentation and Photography