Accuracy: ±0, 1 knot or better 

 ±10° 



(7) In Situ, Modular Ion 

 Analyzer 



(a) Oxygen Range: 0- 10 milliliter s/liter 



Accuracy: ±0.1 milliliter /liter 



(b) Salinity (two inter- Rang e: 0-25%o 

 changeable modules) 25-45%o 



Accuracy: ± . 1 %o 

 ±0.01%o 



(c) Nitrate-Nitrogen Range: 0-50 microgram atoms/ 



liter 

 Accuracy: ±0. 1 microgram 

 atoms/liter 



(d) Phosphate-Phosphorus Range: 0-5 microgram atoms/ 



liter 

 Accuracy: ±0.01 microgram 

 atoms /liter 



(e) Silicates Range: 0-ZOO microgram atoms/ 



liter 

 Accuracy: ±0. 1 microgram 

 atoms /liter 



(8) Total Magnetic Intensity Range: 20, 000- 100, 000 gammas 



Accuracy: ±0.1 gamma 



Note: Sensor Time Response: All sensors should have a 95% response 

 to a step function in a period of 1 second. 



f. Recording and Readout: 



The system shall be designed so that the above data will be read 

 directly into the Master Shipboard Data Logging and Processing Sys- 

 tem either continuously (time- series) and/or intermittently. 



g. If multi-conductor electric cable is employed, this cable and 

 the various sensors associated with this system shall be compatible 

 and useable in conjunction with the Multi-Purpose Constant Tension, 

 Heavy Duty Oceanographic Winch, described elsewhere. 



h. Sensors shall be constructed in modular form, with simpli- 

 city so that they can be easily repaired and/or replaced at sea. 



392 



