Instrumentation for Automated Irrigation Systemsby Ronald J. Grosch, Salt River Project, Phoenix, AZ, USA,
Abstract: Remote site instrumentation sensors are vital components in automated irrigation systems, enabling measurement of water levels, flows and gate positions. It is desirable to select sensors which offer the best performance in comparison to their purchase price and maintenance costs. Attributes of the different sensor types available for each of the measurement tasks are presented. Both favourable and unfavorable characteristics are included. Means for converting the physical parameters (level, flow, and gate position) into electronic signals are also presented. Methods for interfacing the sensor with the telemetry system and the computer are given. Some aspects of data logging system data displays and reports are also discussed.
Subject Headings: Irrigation systems | Probe instruments | Data processing | Data collection | Instrumentation | Automation | Flow measurement | Gates (hydraulic)
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