The full name of this salinity meter is “Handheld Temperature-Compensated Salinity Refractometer.” It operates on the principle that liquids have different refractive indices at different temperatures, and uses optical refraction to measure liquid concentration.
Product Features
This product features a built-in temperature compensation mechanism with an automatic compensation range of 0–30°C, eliminating the need to consult a temperature-compensation table for corrections.
The temperature-compensation design eliminates data discrepancies caused by temperature fluctuations.
The eyepiece is extra-large (1 mm larger in diameter than other brands), facilitating easy observation for the user.
Natural water is typically classified into the following four categories:
Water with a salinity of less than 1.0 g/kg (abbreviated as %) is freshwater;
Water with a salinity between 1.0% and 25% is classified as brackish water;
Water with a salinity between 25.0% and 50.0% is classified as seawater or water with seawater salinity;
Water with a salinity greater than 50% is classified as brine.
Calibration Method
1. Open the cover and carefully wipe the testing prism with a soft cloth.
2. Place approximately 3 drops of the prepared calibration solution (distilled water) onto the detection prism. Gently close the cover plate to prevent air bubbles and ensure the calibration solution is evenly distributed across the prism surface.
3. Align the instrument’s light-receiving plate with a light source or a bright area, and observe the field of view through the eyepiece.
4. Check whether the scale reading of the demarcation line is at 1.000 on the left and 0 on the right.
5. If the reading is not at 1.000 on the left and 0 on the right, remove the small screw to adjust. Turning clockwise increases the reading; turning counterclockwise decreases it. 5. After testing, open the cover plate, remove the seawater, wipe it clean with a cloth, close the cover plate, and store it properly.
Instructions for Use
1. Open the cover and carefully wipe the detection prism clean with a soft cloth.
2. Place a few drops of the solution to be tested onto the detection prism. Gently close the cover to prevent air bubbles from forming, ensuring the seawater is evenly distributed across the prism surface.
3. Align the instrument’s light-receiving plate with a light source or a bright area, and observe the field of view through the eyepiece.
4. Read the scale value at the demarcation line; this indicates the solution’s concentration.
5. After testing, open the cover plate, remove the seawater, wipe the prism clean with a cloth, close the cover plate, and store the instrument properly.
