Accession Number : AD0223864

Title :   WAVE RECORDER INSTALLED AT CAMP JOSEPH H. PENDLETON, OCEANSIDE, CALIFORNIA.

Descriptive Note : Final rept., Series 58, Issue 1,

Corporate Author : CALIFORNIA UNIV BERKELEY WAVE RESEARCH LAB

Personal Author(s) : Hall, M.

Report Date : MAY 1953

Pagination or Media Count : 9

Abstract : The Mk IX, Models 3 and 4 is made up of a differential pressure transducer, a pressure averaging system and a protective housing. The heart of the gage, the Bournes differential pressure transducer, consists of a pressure sensitive bellows linked to the moving wiper arm of an accurately wound 750 ohm potentiometer. The wiper at zero differential pressure rests at the middle of the resistance winding. When a differential pressure is applied to the bellows, the wiper departs from this position a distance proportional to the applied pressure difference. This change in wiper position is converted to the applied pressure difference. This change in wiper position is converted to a proportional current in an electronically stabilized bridge circuit and is recorded on a recording miliameter. To insure long life of the potentiometer, the resistance winding is submerged in oil for cooling. A flexible diaphragm is provided to hold the oil in place but allow the transmission of pressure through the oil to one side of the transducer bellows. (Author)

Descriptors :   (*OCEAN WAVES, RECORDING SYSTEMS), (*PRESSURE GAGES, OCEANOGRAPHIC EQUIPMENT), POTENTIOMETERS, TRANSDUCERS, UNDERWATER EQUIPMENT.

Distribution Statement : APPROVED FOR PUBLIC RELEASE