TDS Sensor Module Dissolved Solids Analog Signal Soluble Solid Water Quality Detection DS18B20 Temperature for Arduino

TDS (Total Dissolved Solids) Sensor Module - Analog Signal - Water Quality Detection - DS18B20 - Temperature - Arduino 51/STM32 Compatible

Product Overview:

TDS, also known as Total Dissolved Solids, indicates the amount of dissolved solids (in milligrams) in one liter of water. The higher the TDS value, the more dissolved substances the water contains and the less clean it is. While TDS does not always accurately reflect water quality, its rapid measurement speed makes it a useful reference.

The most common TDS testing device is the TDS pen. Although inexpensive and easy to use, it does not allow data transmission to a control system for online monitoring and long-term water quality analysis. Using a specialized instrument, while enabling data transmission and offering high accuracy, is very expensive. That's why we developed this TDS sensor module. This module is ready to use and easy to operate. The excitation source for measurement uses alternating signals, which effectively prevents probe polarization, extends its lifespan, and improves the stability of the output signal. The TDS probe is waterproof and can be immersed in water for long-term measurements. This product is suitable for domestic water quality testing, hydroponic systems, and other applications. With this sensor, you can easily set up your own TDS detector, monitor water purity, and verify its quality.

Technical Specifications:

Output Signal Range: 0 to 2.3 V

Supply Voltage: 3.3 to 5.0 V

TDS Measurement Range: 0 to 1000 ppm

Operating Current: 3 to 6 mA

TDS Measurement Accuracy: ±5% of full scale (25 °C)

Module Dimensions: 42 mm × 31.2 mm

TDS Probe Interface: XH-2.54 2-pin

Temperature Sensor Interface: XH-2.54 3-pin

Signal Output: 0-2.3 V analog signal, compatible with 5 V and 3.3 V control systems

Excitation Source: AC signal, effectively avoiding probe polarization

Waterproof: The probe is waterproof and can be immersed in water for extended measurements

TDS Probe Parameters: The probe TDS is suitable for two-point measurement on a PE pipe.

Pin description:

The module connects to the TDS probe via the 2-pin XH-2.54 connector. The DS18B20 temperature sensor interface is also available to facilitate software-based temperature compensation design. VCC: Positive supply voltage

GND: Negative supply voltage

T1: DS18B20 temperature sensor signal output (software temperature compensation possible)

AO: Analog signal output (output voltage range: 0-2.3 V)

+: Positive temperature sensor power supply

T: Temperature sensor signal line

-: Negative temperature sensor power supply