Pressure Recorders: Low Cost, Robust, Low Battery-Use Field Measurement Techniques for Trending Water Pressure

摘要

Water users across California need robust, low cost water level/pressure sensors with integrated data loggers for a high level of precision and accuracy. The Cal Poly Irrigation Training and Research Center (ITRC) has installed Telog Instruments' devices in California and Nevada over the last 12 years to provide a performance review of the devices. The two devices focused on were Telog Instruments' WLS-31 Level Tracker and LPR-3 li Line Pressure Recorder. Over the period, the ITRC has collected several sets of data in varying situations. After 11 years of use on a reservoir, the two Telog WLS-31 units had a 1% difference in readings. After intensive testing, the LPR-3 li has proved to be an accurate, pipeline pressure surge recorder for pressures up to 2,100 kPa. This paper discusses the capabilities of the Telog Instruments' devices along with the ITRC's research experience and evaluation of the two units.