The salt content meter, also known as the salinity meter, is an instrument used to quickly determine the weight percent concentration or refractive index of a solution containing salt (sodium chloride). It is widely used in industrial sectors such as salt making, food, beverages and agricultural production and scientific research.
It usually consists of sensors, measuring circuits and data processing devices. Conductivity sensors have two types: electrode type and induction type
The salinity meter is often used in seawater desalination devices on ships, as a continuous detection instrument for the salinity of fresh water produced, and can emit sound and light alarms when the salt content exceeds the established standard, and at the same time make the substandard fresh water automatically return to the distiller or Drain into the bilge. It usually consists of sensors, measuring circuits and data processing devices.
The sensor of the salt content meter is composed of a pair of electrodes coated with a layer of platinum or rhodium (not easy to corrode) with stable physical and chemical properties. In order to prevent the electrode of the sensor from short-circuiting due to adhesion of foreign matter, the sensor should be cleaned every month or so. Wipe with a soft cloth when cleaning, do not scrape with hard objects, so as not to damage the platinum or rhodium coating.
The salinity meter is easy to operate, and the user can quickly read the salt concentration or the specific gravity of seawater. It can be applied to the concentration management of seawater used in oceans, fisheries and farms, seawater or artificial seawater used in aquariums, and salt water used in fish storage.