PH Sensor – PH Composite Electrode E201-C Acid Base Detection

This pH sensor module consists of a glass pH probe and a signal conditioning board, which gives an output signal proportional to the acidic intensity of liquid solutions and can be interfaced directly to any 5 V micro-controller.

This sensor returns a voltage proportional to the tendency of the solution to gain or lose electrons from other substances, which is linked directly to the pH a substance. And it’s normally used in applications such as aquariums, hydroponics, laboratories, etc,  where it is normally used for measuring acidity on a scale from 0 to 14, with 0 being the most acidic and 14 being the most basic (see the image below).

A pH scale on white background illustration

With this module, you can add a second temperature sensor(not included) in order to measure the solution temperature and compensate the data as part of the measurement process, as it’s shown below:

Specifications:

• Working voltage: 5 Vdc
• Working Current: 5-10 mA
• Detection concentration range: pH 0-14
• Detection range of temperature: 0-80℃
• Response Time: ≤ 5 s
• Stability Time: ≤ 60 s
• Working Temperature: -10 to +50℃

Calibration table:

pH values of known substances