EXTENDED FIELD EVALUATION OF MOISTURE SENSING DEVICES. FINAL REPORT

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.

Media Info

  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 94 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00607527
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/CA/TL-90/07, RN 65-637351
  • Contract Numbers: R87TL30
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 30 1991 12:00AM