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In a liquid, the reciprocal of resistance, the conductivity, is a measure of its ability to conduct electricity. Conductivity is an important parameter of water quality. It can reflect the extent of electrolytes present in water.
The DFRobot Gravity: analogue electrical conductivity meter V2 can be used to measure the electrical conductivity of an aqueous solution, and then to evaluate the water quality, which is often used in water culture, aquaculture, environmental water detection and other fields.
This upgraded version of the electrical conductivity meter V1, greatly improves the user experience and data precision. It supports 3 to 5V wide voltage input, and is compatible with 5V and 3.3V main control boards. The output signal is filtered by hardware has low jitter; The excitation source adopts an AC signal, which effectively reduces the polarization effect, improves the precision and prolongs the life of the probe; The software library uses the two-point calibration method, and can automatically identify a standard buffer solution, making it simple and convenient.
With this sensor, main control board (such as Arduino) and the software library, you can quickly build an electrical conductivity meter, plug and play, with no soldering. Tip: in order to ensure the measurement accuracy, it is strongly recommended to add a temperature sensor to measure the temperature to achieve automatic temperature compensation.