Evaluation of a 6-wire thermocouple psychrometer for determination of in-situ water potentials
- Geological Survey, Denver, CO (United States)
- Foothill Engineering Consultants, Golden, CO (United States)
A 6-wire, Peltier-type thermocouple psychrometer was designed and evaluated by the U.S. Geological Survey for monitoring in-situ water potentials in dry-drilled boreholes in the unsaturated zone at Yucca Mountain, Nye County, Nevada. The psychrometer consists of a wet-bulb, chromel-constantan, sensing junction and a separate dry-bulb, copper-constantan, reference junction. Two additional reference junctions are formed where the chromel and constantan wires of the wet-bulb sensing junction are soldered to separate, paired, copper, lead wires. In contrast, in the standard 3-wire thermocouple psychrometer, both the wet bulb and dry bulb share a common wire. The new design has resulted in a psychrometer that has an expanded range and greater reliability, sensitivity, and accuracy compared to the standard model.
- Research Organization:
- American Society of Civil Engineers (ASCE), New York, NY (United States); American Nuclear Society (ANS), La Grange Park, IL (United States)
- DOE Contract Number:
- AI08-92NV10874
- OSTI ID:
- 60945
- Report Number(s):
- CONF-940553-Vol.4; TRN: 94:010821-0036
- Resource Relation:
- Conference: International high-level radioactive waste management conference, Las Vegas, NV (United States), 22-26 May 1994; Other Information: PBD: 1994; Related Information: Is Part Of High Level Radioactive Waste Management: Proceedings of the fifth annual international conference. Volume 4; PB: 1048 p.
- Country of Publication:
- United States
- Language:
- English
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