Main Title |
Instrumentation and Development of Techniques to Measure and Evaluate Meteorological Parameters Important to Hydrology. |
Author |
Chadwic, Duane G. ;
|
CORP Author |
Utah Water Research Lab., Logan. |
Year Published |
1970 |
Report Number |
PRCWRR12-1; DI-14-0001-1865; OWRR-A-002-UTAH; 03375,; A-002-UTAH(3) |
Stock Number |
PB-196 726 |
Additional Subjects |
( Hydrometeorology ;
Telemetering equipment) ;
( Meteorological instruments ;
Data transmission) ;
Snow surveys ;
Wind(Meteorology) ;
Precipitation(Meteorology) ;
Analog computers ;
Digital computers ;
Remote areas
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-196 726 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
50p |
Abstract |
A hydrologic data telemetering system was designed to have the highest accuracy of any FM/FM telemetering system known. The repeatability of readout approaches 0.05%. This accuracy is not appreciably deteriorated in the presence of high noise levels in radio telemetry transmissions. This high accuracy is obtained by: (a) a frictionless transducer; (b) a specially designed tracking filter; (c) a wide-range frequency deviation of plus or minus 40% permitting greater resolution and accuracy; (d) readout subsequently converted to usable units by aid of a digital computer, and (e) locating the electronics and the transducer in a temperature stable environment, underground. The frictionless transducer technique was used in developing a low-displacement type pressure transducer for measuring the water-content of snow. A method was developed for the automatic plotting of isohyetal lines on an analog computer. (WRSIC abstract) |