PS-2195 salinity sensor
The PS-2195 salinity sensor measures salinity, conductivity, and temperature with the included salinity-sensor probe. The PASPORT salinity sensor can use a 10-times salinity-sensor probe (source wording) to measure salinity, conductivity, and temperature in water sources ranging from fresh to brackish water. It determines salinity from conductivity and includes a calculation based on the Practical Salinity Scale (PSS) to compensate for conductivity fluctuations caused by temperature changes. The salinity sensor measures current through a solution using two platinum electrodes in the probe. Because current in the solution results from ion movement, higher ion concentrations produce higher conductivity. An alternating voltage is applied between the two electrodes at the probe tip, and the measured current is proportional to the solution's conductivity.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Conductivity range | 1000 to 100000 microsiemens/centimeter |
| Temperature Range | 0 to 50℃ |
| Salinity range | 1 to 55‰ |
| Salinity range - Error [After calibration] | ±1% (after calibration) |
| Maximum Sampling Rate | 50 hertz |
| Temperature Compensation [At a salinity of 33‰ and a temperature of 0 to 45℃] | Compensation error ±0.5‰ at salinity 33‰ and temperature 0 to 45℃ |
| Electrode constant | 10 times |
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