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calibration system, which is located at our Sierra Court Facility, consists of a
personal computer, a programmable pump, a digital scale, a water tank and
some wires and elastic pipes. The computer controls all the equipment
through its serial port.
The pump (middle) can be programmed to deliver water from 0.06 to 220 mL/min. The data from pump and digital scale are collected automatically. The range of the digital scale is 0-2 kg.
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The
pump is calibrated first, by pumping nominal quantities of distilled water
in a fixed time interval into beaker, situated on the digital scale. The
computer then reads the digital scale and infers the actual flow rate from
the pump.
With a pump calibration curve in place, the tipping-bucket is calibrated by pumping accurately-known amounts of water into the tipping-bucket in different intervals, simulating different rainfall rates. The number of tips for every simulated rain rate is counted and fed into the computer. More Information For more information about the IIHR tipping-bucket rain gauge calibrator contact Dr. Anton Kruger or Prof. Witold Krajewski. See Also |
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Please send comments
to: webmaster@iihr.uiowa.edu Contact us at: iihr@uiowa.edu or call 319-335-5237 Copyright © The University of Iowa 2005. All rights reserved. Iowa City, IA 52242 This page was last updated on August 5th, 2008 |
