18 - 



The response of an instrument of this configuration in 

 varying depths of seawater is illustrated in Figure II-6. The 

 contours represent lines of equal transducer response per ^ feet of 

 wave height normalized by the rated capacity of the transducer. The 

 fields of highest value indicate the environmental conditions 

 conducive to greatest instrument performance. 



The absolute transducer was selected with a rated capacity of 

 50 psia (because of cost and availability) which provides the DPG the 

 capability to measure a pressure head of over 15 feet. 



