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Author : Mong Nguyen
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (318 download)
Download or read book Field Evaluation of Moisture Sensing Devices written by Mong Nguyen and published by . This book was released on 1990 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Evaluation of Moisture Sensing Devices written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mong Nguyen
Publisher :
ISBN 13 :
Total Pages : 73 pages
Book Rating : 4.:/5 (953 download)
Download or read book Extended Field Evaluation of Moisture Sensing Devices written by Mong Nguyen and published by . This book was released on 1990 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Caltrans Division of New Technology, Materials and Research conducted a research project to determine the feasibility of using moisture sensing devices to regulate automatic irrigation systems. Four of them (Watermatic, Watermark, Hydrovisor, and Hydrodyne) proved satisfactory. This study was limited to the use of one sensor per valve. One of the recommendations of this study was to conduct further studies into the possibility of using one sensor per irrigation controller. Thus, the purpose of the research project entitled "Field Evaluation of Moisture Sensing Devices" was to investigate the possibility of overriding the entire automatic irrigation controller with one sensor. The sensors tested (Hydromanager-Interrogator, Hydrovisor, Moisture Stat, and Watermatic) provided acceptable installation and reliability results in their usage of one sensor per irrigation controller. They could be used with shrubs and ground cover. No special equipment was needed for the installation of the units. No maintenance was required once calibration of the units was completed. All sensors showed savings over allotted irrigation times varying from 22 to 64%. A five-minute video presentation was produced to show the advantages and usage of the moisture sensors.
Author : Mong X. Nguyen
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.3/5 (121 download)
Download or read book Field Evaluation of Moisture Sensing Devices written by Mong X. Nguyen and published by . This book was released on 1990 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council (U.S.). Transportation Research Board
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (618 download)
Download or read book Development and Field Evaluation of Prototype Soil Moisture Sensors written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Walter M. Schlesser
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (89 download)
Download or read book Field Calibration and Evaluation of Mass-flow-rate and Moisture Sensors on Forage Harvesting Equipment written by Walter M. Schlesser and published by . This book was released on 2001 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kendrick W. Lentz (Jr.)
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (123 download)
Download or read book Final Report written by Kendrick W. Lentz (Jr.) and published by . This book was released on 1980 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel E. Storm
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (129 download)
Download or read book Evaluation of Soil-moisture Sensors for Use in Data-acquisition Systems written by Daniel E. Storm and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several commercially available soil-moisture sensors and computer hardware are evaluated for use in an integrated computer controlled data acquisiton system. The watermark resistance sensor, the heat dissipation sensor, and the tensiometer measure water potential in the range of approximately -0.1 to -1.0 bars. The fiberglass resistance cell, gypsum block, and tahermocouple psychrometer cover water potential below -1.0 bar. To cover the entire range of water potentials encountered in the field, two types of moisture sensors can be used simultaneously. The least expensive system uses the tensiometer with the resistance type moisture sensors, and the most expensive system uses the heat dissipation sensors.
Author :
Publisher :
ISBN 13 :
Total Pages : 1572 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. A. Matzkanin
Publisher :
ISBN 13 :
Total Pages : 205 pages
Book Rating : 4.:/5 (692 download)
Download or read book Instrumentation for Moisture Measurement-bases, Subgrades, and Earth Materials (sensor Evaluation) written by G. A. Matzkanin and published by . This book was released on 1979 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two types of moisture sensors for long term in situ monitoring of moisture in highway subgrade soils have been developed and field tested. One sensor is based on the relationship between the soil moisture and the dielectric constant of the soil which affects the capacitance as sensed by a pair of embedded electrodes. The other sensor is based on the nuclear magnetic resonance of hydrogen of the water molecules in the soil. Results of the evaluation program show that the tested sensors are capable of determining soil moisture content in the range of 20% to 30% with an accuracy in the field of ±2% oven dry moisture content and a precision of ±2% oven dry moisture content. The sensors were evaluated in the field for over a year under in-service highways in Arizona and Pennsylvania, and under a test road at the U.S. Army Cold Regions Research Laboratory in New Hampshire. Periodic comparisons were made among the sensor readings and results of other moisture measurements including nuclear probe and gravimetric analysis of borings. Although some discrepancies were observed among the field results, and the field tests were not conclusive, the data obtained with the newly developed sensors appear to be consistent with the indicated moisture conditions.
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (3 download)
Download or read book Public Roads written by and published by . This book was released on 1988 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 2180 pages
Book Rating : 4.0/5 ( download)
Download or read book U.S. Government Research Reports written by and published by . This book was released on 1964 with total page 2180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (3 download)
Download or read book NBS Special Publication written by and published by . This book was released on 1971 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (3 download)
Download or read book Estimating Soil Moisture by Feel and Appearance written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ibrahiem M. M. El Emary
Publisher : CRC Press
ISBN 13 : 1466518111
Total Pages : 776 pages
Book Rating : 4.4/5 (665 download)
Download or read book Wireless Sensor Networks written by Ibrahiem M. M. El Emary and published by CRC Press. This book was released on 2013-08-28 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supplying comprehensive coverage of WSNs, this book covers the latest advances in WSN technologies. It considers some of theoretical problems in WSN, including issues with monitoring, routing, and power control, and details methodologies that can provide solutions to these problems. It examines applications of WSN across a range of fields, including health, defense military, transportation, and mining. Addressing the main challenges in applying WSNs across all phases of our life, it explains how WSNs can assist in community development.
Author : United States. National Bureau of Standards
Publisher :
ISBN 13 :
Total Pages : 696 pages
Book Rating : 4.:/5 (31 download)
Download or read book Report written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 972 pages
Book Rating : 4.3/5 (91 download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
