DFrobot Gravity Analog pH Sensor Meter Pro Kit V2

The V2 PRO analog pH meter was specially developed to measure the pH value of solutions and water and reflect the degree of acidity or alkalinity. It is frequently used in various applications such as aquariums, aquaponics, aquaculture, pool, swimming pool, and environmental water studies. As an improved version of the V1 pH meter, this product greatly enhances precision and user-friendliness. The built-in voltage regulator chip supports an operating voltage of 3.3 to 5.5V, which is compatible with the 5V and 3.3V microcontroller. The output signal filtered by the hardware has a low jitter. The software library uses the two-point calibration method and can automatically identify two standard buffer solutions (4.0 and 7.0). With this product and an Arduino with the corresponding software library, you can quickly build a pH meter and, for example, measure the pH value of your aquarium. It uses an industrial electrode and has a built-in simple connection and a long service life, making it very suitable for online monitoring.

Important operating information:

The BNC connector and the signal conversion board must be kept dry and clean, otherwise the input impedance will be affected, leading to inaccurate measurement. If it is wet, it must be dried.
The signal conversion board should not be placed directly on a wet or semi-conductive surface, otherwise the input impedance will be affected which will lead to inaccurate measurement. It is recommended to secure the signal conversion board with nylon standoffs, maintaining some distance between the signal conversion board and the surface.
The sensitive glass bubble in the head of the pH probe should not come into contact with hard material. Any damage or scratches will render the electrode useless.
Disconnect the pH probe from the signal conversion board after completing the measurement. The pH probe should not be connected to the signal conversion board without power for a prolonged period.