YSI 556MPS Handheld Multiparameter Meter with Soft Sided Carrying Case, 0 to 200 mS/cm, 0.001 mS/cm Resolution, +/-0.5 Percent Accuracy

Featuring a waterproof IP-67, impact-resistant case, the YSI 556MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP. The YSI 556MPS conforms to GLP standards. Battery Options: The unit is powered by alkaline batteries or an optional rechargeable battery pack with fast charge feature. Quickly check pH, ORP, and conductivity values to guarantee probe accuracy during important field studies. Communications: RS-232 Serial. Connector: MS (military spec) waterproof with bayonet lock. Logging: 49,000 data sets, date and time stamp, manual or logging, with user-selectable intervals. Power: 4 alkaline C-cells. Dissolved Oxygen (percent): Polarographic sensor, 0 to 500 percent air saturation range, 0 to 200 percent air saturation, +/- 2 percent of the reading or +/- 2 percent air saturation, whichever is greater; 200 to 500 percent air saturation, +/- 6 percent of the reading accuracy, 0.1 percent air saturation resolution. Dissolved Oxygen (mg/L): Polarographic sensor, 0 to 50 mg/L range, 0 to 20 mg/L, +/- 0.2 mg/L or +/- 2 percent of reading, whichever is greater; 20 to 50 mg/L, +/- 6 percent of the reading accuracy, 0.01 mg/L resolution. Temperature: Thermistor sensor, -5 to 45 degree C range, +/-0.15 degree C accuracy, 0.1 degree C resolution. Conductivity: Four electrode cell sensor, 0 to 200 mS/cm (auto range) range, +/-0.5 percent of reading or 0.001 mS/cm, whichever is greater (4-m cable) +/-1 percent of reading or 0.001 mS/cm, whichever is greater (20-m cable) accuracy, 0.001 mS/cm to 0.1 mS/cm (range dependent) resolution. Salinity: Calculated from conductivity and temperature sensor, 0 to 70 ppt range, +/-1.0 percent of reading or 0.1 ppt, whichever is greater accuracy, 0.01 ppt resolution. Total Dissolved Solids (TDS): Calculated from conductivity and temperature sensor, 0 too 100 g/L range, 4 digits resolution. Measures 9" length by 4-11/16" width.