TDS (Total Dissolved Solids), Chinese name Total Dissolved Solids, also known as Total Dissolved Solids, indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. Generally speaking, the higher the TDS value, the more dissolved substances contained in the water and the less clean the water. Although TDS cannot effectively reflect water quality under certain circumstances, as a parameter that can be quickly detected, TDS can still be used as an effective water quality reflection parameter as a reference.
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The commonly used TDS testing equipment is a TDS pen. Although it is cheap and easy to use, it cannot transmit data to the control system for long-term online monitoring and water quality analysis. Using a special instrument, although it can transmit data and has high accuracy, it is very expensive. To this end, we specially introduced this TDS sensor module. The module is plug and play, easy to use. The excitation source for measurement uses AC signals, which can effectively prevent probe polarization, extend the life of the probe, and increase the stability of the output signal. The TDS probe is a waterproof probe that can be immersed in water for long-term measurement. This product can be applied to water quality testing in domestic water, hydroponics and other fields. With this sensor, you can easily DIY-set the TDS detector, easily detect the cleanliness of the water, and check your water quality.
 
Product Parameters:
Output signal range: 0~2.3V
Power supply voltage: 3.3~ 5.0V
TDS measurement range: 0~1000ppm
Working current: 3~6mA
TDS measurement accuracy: ±5%F.S. (25C)
Module size: 42mmX 31.2mm
TDS probe interface: 2Pin XH-2.54
Temperature sensor interface: 3Pin XH-2.54
Signal output: 0-2.3V analog signal output, compatible with 5V and 3.3V control systems
Excitation source is AC signal, effectively preventing probe polarization
Waterproof: Waterproof probe can be immersed in water for long-term measurement
TDS probe parameters: TDS probe is suitable for 2 points of PE pipe
 
Pin description:
The module is connected to the TDS probe through the 2PinXH-2.54 connector, and the DS18B20 temperature sensor interface is extended to facilitate software temperature compensation design.
VCC: supply voltage+
GND: supply voltage-
T1: Temperature sensor DS18B20 signal output port (temperature compensation can be performed through software)
AO: Analog signal output (output voltage range 0-2.3V)
+:Temperature sensor power supply+
T: Temperature sensor signal line
-: Temperature sensor power supply-
1: TDS probe lead 1
2: TDS probe lead 2

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