Innovative Configuration Design of Two-Wire Tip Mechanisms for a Tipping-Bucket Rain Gauge

  • Manuel Tumanda Tabada Jr. Engineering Graduate Program, School of Engineering, University of San Carlos, Talamban, Cebu, Philippines / Agusan del Sur State College of Agriculture and Technology, Bunawan, Agusan del Sur, Philippines
  • Michael Estela Loretero Engineering Graduate Program, School of Engineering, University of San Carlos, Talamban, Cebu, Philippines / Deparment of Mechanical Engineering, School of Engineering, University of San Carlos, Talamban, Cebu, Philippines
Keywords: rain data acquisition, tipping-bucket rain gauge, tip mechanism, water level detection

Abstract

This paper evaluates the measurement accuracy of the three designs of an innovative Tipping-Bucket Rain Gauge (TBRG) tip mechanism. A water-level detecting circuit is used to replace the conventional reed switch sensor, which addresses the disadvantages of the magnetic sensing method that became a factor in quantification uncertainties. The TBRG configuration designs were the bucket-feed, which detects the presence of water inside the bucket, and the bottom-feed and the center-feed, which use the tip-impact method in measuring rainfall. The constant flow method is used in the experimentation. The bucket-feed shows potential in precision rainfall measurement for having -3.84% and -2.68% accuracy errors at 6 mL/min and 11 mL/min respectively, without correction algorithm applied. The tip-impact application for the bottom-feed and the center-feed resulted in a higher error percentage from the volumetric flow samples. The result indicates that actual detection in the bucket brings more measurement accuracy than the tip-counting technique.

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Published
2020-04-01
How to Cite
[1]
Manuel Tumanda Tabada Jr. and Michael Estela Loretero, “Innovative Configuration Design of Two-Wire Tip Mechanisms for a Tipping-Bucket Rain Gauge”, Int. j. eng. technol. innov., vol. 10, no. 2, pp. 156-164, Apr. 2020.
Section
Articles