MODE 1-2-1 



<*-, ,DB/KYD 



g/8 4/8 6/8 



Figure 13. Calibration tests for mode 

 1-2-1, showing attenuation coefficient vs. 

 D , using pure water at 19°C (no correc- 

 tion for attenuation by the water). 



O^DB/KYD MODE 1-2-1 



TEMP. I9T 



Figure 14. Calibration tests for mode 

 1-2-1 showing attenuation coefficients 

 of figure 13 vs. resonant frequency. 



69 



