YSI 6 series User Manual page 374

Specifications
pH
Sensor Type...........Glass combination electrode
Range.....................0 to 14 units
Accuracy................+/- 0.2 units
Resolution..............0.01 units
Temperature Range -5 to 50 C
Depth...............200 meters
ORP
Sensor type............ Platinum button
Range.....................-999 to +999 mV
Accuracy................+/-20 mV in redox standard solutions
Resolution...............0.1 mV
Temperature Range -5 to 60 C
Depth...............200 meters
Turbidity
Sensor type............ Optical, 90  scatter, with mechanical cleaning
Range..................... 0 to 1000 NTU
Accuracy................+/- 2% of the reading or 0.3 NTU (whichever is greater), in YSI AMCO-AEPA standards
Resolution...............0.1 NTU
Temperature Range -5 to 50 C
Depth............... 61 meters
Chlorophyll
Sensor type............ Optical, fluorescence, with mechanical cleaning
Range..................... Approximately 0 to 400 µg/L Chl; 0-100 Relative Fluorescence Units (RFU)
Accuracy................ No specification provided
Linearity................ R2 > 0.9999 for serial dilution of Rhodamine WT solution from 0 to 500 ug/L
Detection Limit.....Approximately 0.1 ug/L Chl (determined using cultures of Isochrysis sp. and chlorophyll a
concentration determined through extractions).
Resolution...............0.1 µg/L Chl; 0.1 RFU
Temperature Range -5 to 50 C
Depth............... 61 meters
Phycocyanin-Blue-green Algae (BGA-PC)
Sensor type............ Optical, fluorescence, with mechanical cleaning
Range..................... Approximately 0 to 280,000 cells/mL of BGA (See Principles of Operation section for
explanation of estimate); 0-100 Relative Fluorescence Units (RFU)
Accuracy................ No specification provided.
Linearity................ R2 > 0.9999 for serial dilution of Rhodamine WT solution from 0 to 400 ug/L
Detection Limit...... Approximately 220 cells/mL. Estimated from cultures of Microcystis aeruginosa
Resolution...............1 cell/mL; 0.1 RFU
Temperature Range -5 to 50 C
Depth............... 61 meters
Phycoerythrin-Blue-green Algae (BGA-PE)
Sensor type............ Optical, fluorescence, with mechanical cleaning
Range..................... Approximately 0 to 200,000 cells/mL of BGA (See Principles of Operation section for
explanation of estimate); 0-100 Relative Fluorescence Units (RFU)
Accuracy................ No specification provided.
Linearity................ R2 > 0.9999 for serial dilution of Rhodamine WT solution from 0 to 8 ug/L
Detection Limit...... Approximately 450 cells/mL. Estimated from cultures of a Synechococcus species.
Resolution...............1 cell/mL; 0.1 RFU
Temperature Range -5 to 50 C
Depth............... 61 meters
YSI Incorporated Environmental Monitoring Systems Operations Manual
Appendix O
O-11