I.k.. SHIPBOARD DYE DETECTOR PROBE FOR 

 OCEANOGRAPHIC INVESTIGATIONS 



Primary Use: 



To be utilized on oceanographic survey ships for the direct 

 detection and evaluation (quantitative) of certain dyes which are 

 used in tagging water masses for the purposes of studying dif- 

 fusion, turbulence, and ocean circulation. 



Requirennents and Specifications: 



a. To be utilized by oceanographic survey ships when stopped 

 ("lying-to") and when underway. 



b. Instrument design should stress simplicity, ruggedness, and 

 light weight in construction. 



c. The sensor (dye) should have its wave length sensitivity 

 peaked to correspond to the wave length of rhodamine-type dyes. 

 This will reduce the effect of spurious, natural background fluor- 

 escence. 



d. To be utilized in coastal and oceanic areas and in water 

 depths of 0-6, 500 fathoms. 



e. Sensors, range, and accuracy: 

 Sensor 



(1) Depth Range: 0-6, 500 fathoms 



Accuracy: 1/4% full scale of each 

 module 

 NOTE: Depth modules: 0-600 feet, 0-1, 000 feet, 0-6, 000 feet, 

 0-39, 000 feet. 



(2) Rhodamin2 Range: 500 parts/million fo 



0. 01 parts/billion 

 Accuracy: 0.01 part/billion 



(3) Time response: (a) Depth : 95% response to a step function of 

 1 fathom (6 feet) in 1 second at mid-range. 



(b) Rhodamine dye concentration : 95% response 

 to a step function of 0. 1 part per billion in 1 second. 



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