How do digital water hardness meters work?

Digital water hardness meters, such as the JINGDA water meter, measure the concentration of dissolved calcium and magnesium ions, which determine water hardness. The JINGDA meter uses a sensor to detect the electrical conductivity of water, which correlates with ion concentration. As water hardness increases, electrical conductivity readings become higher.

The JINGDA water meter provides results in grains per gallon (gpg) or parts per million (ppm), offering a range between 0-425 ppm, suitable for home and industrial use. It features an LCD for easy reading and a battery life that lasts up to 500 hours.

Other brands, such as Hach, offer digital meters with similar functionality, focusing on accurate, easy-to-read results. However, always ensure the water meter offers an appropriate range and resolution for your specific needs.

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