POSEIDON Salinity Pen Plus+, Руководство пользователя

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4.
Press the CAL/HOLD button to lock the measured value
on the display.
5.
After measurement rinse the sensor with fresh water,
ensure to fully dry the sensor using a clean, dry cloth or
sponge. Always keep the sensor dry when not in use.
**WARNING!**
Air b ubbles stuck to the sensor after it is
immersed into the water will lead to
measurement errors.
Always shake the sensor back and fourth fi ve times to
remove these bubbles.