SHIPBOARD DYE DETECTOR PROBE FOR OCEANOGRAPHIC INVESTIGATIONS 
Sketch: 
(To be provided) 
Primary Uses 
To be utilized on oceanographic survey ships for the direct detec- 
tion and evaluation (quantitative) of certain dyes which are used in 
tagging water masses for the purposes of studying diffusion, turbulence, 
and ocean circulation. 
Requirements and Specifications: 
ae To be utilized by oceanographic survey ships when stopped 
SUGYIe 
("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 fluorescence. 
d. To be utilized in coastal and oceanic areas and in water depths 
of 0-6,500 fathoms. 
e. Sensors, range and accuracy: 
Sensor Range Accuracy 
(1) Depth 0-6,500 fathoms #2% full scale of each 
module 
NOTE: Depth modules: 0-600 feet, O-1,000 feet, O0-6,000 feet, 0-39,000 feet 
(2) Rhodamine 500 parts/million to +.01 part/billion 
-Ol parts/billion 
(3) Time responses (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. 
f. Recording and Readout: 
(1) To provide for visual analog. 
(2) The data sensed by this instrument is to be an in-put into 
the "Master" Shipboard Data Logging and Processing System. 
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