YSI^® Professional Series Probes

Temperature (included with all cables – Range: -5°C to 100°C (DO compensation range -5°C to 45°C). Accuracy: ±0.15°C. Resolution: 0.01°C. Dissolved Oxygen – Sensor type: galvanic or polarographic (user-selectable). Range: 0 to 500% air saturation; 0 to 50 mg/L. Accuracy: 0 to 200% (±2% of the reading or ±2% air saturation, whichever is greater)/200% to 500% (±6% of the reading); 0 to 20 mg/L (±2% of the reading or 0.2 mg/L; whichever is greater)/20 mg/L to 50 mg/L (±6% of the reading). Resolution: 1% or 0.1% air saturation (user-selectable); 0.1 mg/L or 0.01 mg/L (user-selectable)/0.1% air saturation. pH – Sensor type: glass combination electrode. Range: 0 to 14 units. Accuracy: ±0.2 units. Resolution: 0.01 units. Conductivity – Sensor type: 4-electrode cell with autoranging. Range: 0 to 200 mS/cm. Accuracy: ±0.5% of reading or ±0.001 mS/cm, whichever is greater (4m cable); ±1.0% of reading or ±0.001 mS/cm, whichever is greater (20m cable). Resolution: 0.001 mS/cm to 0.1 mS/cm (range-dependent). 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. Total Dissolved Solids (TDS) – Sensor type: calculated from conductivity (variable constant, default 0.65). Range: 0 to 100 g/L. Resolution: 4 digits. Barometer – Range: 375 mm Hg to 825 mm Hg. Accuracy: ±1 mm Hg within ±15°C temperature range from calibration point. Resolution: 0.1 mm Hg. Units: mmHg, inHg, KPa. ISE – Sensor type: platinum button. Range: -1,999 mV to +1,999 mV. Accuracy: ±20 mV. Resolution: 0.01 mV. Units: mV or mg/L.