- X - 



LIST OF FIGURES AND TABLES (Continued) 



V-1 Schematic representation of differential 



pressure transducer and isolation sensors. . 78 



V-2 Cross-section of Isolation diaphragm 



with an object load applied 85 



V-3 The DPG bench calibration system 8? 



V-4 Strip chart recording illustrating 

 possible existence of air in arm 

 side of dP4 89 



V-5 DPG transducer calibration curves 9I 



V-6 Orientation of the DPG during CERG 



wave tank tests 95 



V-7 Sample strip chart recording; CERC test. 

 Configuration I . DP3 arm end-cap left 

 accidentally on 98 



V-8 Sample strip chart recording; CERG test. 



Configuration I 100 



V-9 Sample strip chart recording; CERC test. 



Configuration II 101 



V-10 Comparison of DPG absolute pressure gauge 



and CERG resistance wave probe 102 



VI -1 Site of the DPG field evaluation 108 



VI-2 Nearshore bathymetry of installation site. . IO9 



VI -3 Preparing for field installation: 



the DPG suspended underneath the operator's 



platform of the CRAB 110 



6-1 Orientation Headings of the DPG Arms 



(Table) . . . ' 114 



