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Specifications Appendix O
YSI Incorporated Environmental Monitoring Systems Operations Manual O-12
Rhodamine WT
Sensor type............ Optical, fluorescence, with mechanical cleaning
Range..................... 0 to 200 µg/L Rhodamine WT
Accuracy................ +/- 5 % of the reading or 1 ug/L, whichever is greater
Resolution...............0.1 µg/L Rhodamine WT
Temperature Range -5 to 50C
Depth…………… 61 meters
Conductivity
*
Sensor Type...........4 electrode cell with autoranging
Range.....................0 to 100 mS/cm
Accuracy................+/- 0.5% of r 0.001 mS/cm
Resolution..............0.001 mS/cm to 0.1 mS/cm (range dependent)
Temperature Range -5 to 60 C
Depth……………200 meters
Salinity
Sensor Type............Calculated from conductivity and temperature
Range......................0 to 70 ppt
Accuracy.................+/- 1.0% of reading or 0.1 ppt, whichever is greater
Resolution...............0.01 ppt
Temperature Range -5 to 50 C
Depth……………...200 meters
Nitrate-Nitrogen
Sensor Type...........Ion-selective electrode
Range.....................0-200 mg/L-N
Accuracy................+/- 10% of reading or 2 mg/L (whichever is greater)
Resolution..............0.001 mg/L-N to 1 mg/L-N (range dependent)
Temperature Range -5 to 50 C
Depth……………15 meters
Ammonium-Nitrogen
Sensor Type...........Ion-selective electrode
Range.....................0-200 mg/L-N
Accuracy................+/- 10% of reading or 2 mg/L (whichever is greater)
Resolution..............0.001 mg/L-N to 1 mg/L-N (range dependent)
Temperature Range -5 to 50 C
Depth……………15 meters
* Report outputs of specific conductance (conductivity corrected to 25 C), resistivity, and total dissolved solids are also
provided. These values are automatically calculated from conductivity according to algorithms found in
Standard
Methods for the Examination of Water and Wastewater
(Ed 1989).