TDS Sensor Module (Total Dissolved Solids Sensor)
The TDS Sensor Module is a water quality monitoring device used to measure the concentration of dissolved solids in water. It provides an indication of water purity by detecting substances such as salts, minerals, and impurities, making it ideal for IoT, environmental, and filtration systems.
Key Features
- TDS Measurement: Detects total dissolved solids in water (ppm)
- Analog Output: Provides voltage proportional to TDS level
- Waterproof Probe: Suitable for direct immersion in liquids
- Wide Voltage Support: Compatible with 3.3V and 5V systems
- Easy Calibration: Adjustable for improved accuracy
- Microcontroller Friendly: Works with Arduino, ESP32, and more
Applications
- Water Quality Monitoring: Check purity of drinking water
- RO & Filtration Systems: Monitor filter performance
- Aquariums & Hydroponics: Maintain optimal water conditions
- IoT Projects: Real-time water analysis
- Environmental Monitoring: Test natural water sources
Technical Specifications
- Measurement Parameter: Total Dissolved Solids (TDS)
- Measurement Range: ~0–1000 ppm
- Output Type: Analog voltage (typically 0–2.3V or up to 5V)
- Operating Voltage: 3.3V–5V
- Operating Current: ~3–6 mA
- Probe Type: Waterproof conductivity probe
- Operating Temperature: ~0°C to 60°C
Product Example
Analog TDS Sensor Module with Probe
Reliable water quality sensor for measuring dissolved solids in embedded and IoT applications.
Why Choose This Sensor?
The TDS sensor is a simple and effective way to evaluate water quality in real time. It is widely used because it is easy to interface, affordable, and provides useful insights into water purity for both DIY and industrial applications.
⚠️ Important Notes
- Higher TDS value ≠ always unsafe (it only indicates dissolved content, not type)
- Requires calibration for accurate readings
- Avoid electrical interference from other sensors in the same water
If you want, I can also:
- Provide Arduino code for ppm calculation
- Show calibration process
- Compare TDS vs pH vs turbidity sensors
TDS Sensor Module
