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<br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />~ <br />;.: <br /> <br />Residential Secondary Water ,\Ielers - Research Proiect <br /> <br />the State's efforts include development of a deflection type meter at Utah State University and <br />their on-going efforts to meter secondary water. <br /> <br />2.3 Secondary water meter Thesis - USU <br /> <br />In 1995, Utah State University staff under direction of the Utah Division of Water Resources <br />conducted a study to dEvelop a new meter fl.at was specifically designed for metering dirty <br />water4. The purpose of the study was to develop and test a meter that could be used to meter <br />unfiltered water supplied to residential customers. Specific tasks of this research study included <br />1. Conducting a survey of some existing technologies that can measure flow of unfiltered water <br />in I-inch diameter pipes, 2. Developing a suitable deflection type meter using a strain gauge, <br />test the meter in the Utah Water Research Laboratory and in the field, summarize the results <br />and make recommendations for the future. <br /> <br />During the development stages of this study, much effort was spent in calibration and <br />programming to overcome effects of temperature on the strain gauge. It was estimated that a <br />manufacturer could sell this new meter for $200. A market analysis was completed by a meter <br />manufacturing company in Logan, Utah to determine if this newly developed meter was <br />marketable. They found that it was not marketable based on a survey sent to many water <br />suppliers at that time. <br /> <br />2.4 Division of Water Resources Internal Report - Metering Secondary Water <br /> <br />In May 2001, the Division of Water Resources prepared a draft report that included the <br />following: some potential options for metering secondary water, a list of criteria for secondary <br />water meter selection, a preliminary investigation of available meters, a brief cost study of <br />metering with and without filtration, and possible field test station schemes for testing single-jet <br />meters with dirty water. It was concluded that system-wide filtration of irrigation water is likely <br />cost effective and has many benefits. Recommendations include studying the effectiveness of <br />the single-jet meter in dirty waterS. <br /> <br />2.5 State Testing - Meter performance in the Field <br /> <br />The Utah Division of Water Recourses has been installing meters in different areas throughout <br />the state. Many of these meters are conventional drinking water type meters that have been <br />experiencing problems due to particulate buildup and abrasion, chemical buildup, and pressure <br />surge. Refer to Section 8.0 for more details of current testing by Utah Division of Water <br />Resources. <br /> <br />2.6 What We Have Learned <br /> <br />Based on the reports and discussions with Utah Division of Water Resources, some conclusions <br />have been made that help us understand what we need to do to further our quest towards <br />finding an economical meter for secondary water. To date the following knowledge has been <br />gained from this initial search of reports and work stated above: <br /> <br />1. General understanding of the cause of problems that face residential irrigation water <br />metering <br /> <br />2. Lists of some available meters, brands, and costs <br /> <br />6 <br />