Same as most digital meters, this meter apply a work theory which is measuring the liquid conductance to determine its TDS/TEMP/Salinity value. Compared with regular digital meters, this one measure the frequency of input probe rather than measure voltage or current of probe to measure the conductance, and the probe use copper with platinum plating, by this way, minimize the polarization and platinum plating probe is pretty stable and fit for food salinity test as well, which means this is harmless. Features: 1.Large Color LCD Display Screen 2.High Resolution Measurement Reading 3.Precision Measurement Value 4.Automatic Temperature Compensation 5.Water Temperature and TDS Reading 6.Manually Calibration Setting & Include Calibration Solution 7.Vibration Alarm for Test Start and Completion 8.Low Battery Reminding Function 9.Life Water Resistance 10.Contains Calibration Solution and Battery Work Theory: Electronic Conductivity Measurement Measure Range Temperature 0 ~ 50℃ Salinity 0 ~ 50ppt Specific Gravity 1.000 ~ 1.043 TDS 1 ~ 300 ppm Resolution Temperature : 0.1℃ Salinity : 0.1ppt Specific Gravity : 0.001 TDS:1PPM Measure Tolerance temperature :±1℃ salinity :±1.5ppt specific gravity :±0.001 TDS: ±10PPM Dimensions 7.75x1.25x1.25 inches; 1lb approx
