Description
The turbidity of water refers to the degree of turbidity caused by suspended substances such as silt, clay, organic matter, plankton and microorganisms contained in the water. Industrial-grade turbidity sensors or turbidity meters are expensive, and the cost is too high in the design of electronic products. Therefore, we have selected a turbidity sensor that is widely used in household appliances, washing machines, and dishwashers. The sensor uses optical principles to comprehensively judge the turbidity through the light transmittance and scattering rate in the solution. Inside the sensor is an infrared tube. When light passes through a certain amount of water, the amount of light transmission.
The module pin definitions are as follows:
- VCC: Positive supply voltage, 5V cannot be used 3.3V
- AO: analogue signal output, output voltage range 0~5V
- DO: digital signal output is less than the set value and outputs high level; greater than the set value and outputs low level
- GND: negative supply voltage
Specification:
- Working voltage: 5.00V DC
- Working current: 40mA (MAX)
- Response time: <500ms
- Insulation resistance: 100M (Min)
- Analog output: 0~4.5V
- Digital output: high/low level signal (the corresponding threshold can be selected by adjusting the potentiometer)
- Operating temperature: -20~90
- Module size: 38.6mm x 22.1mm
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