Analog TDS Meter V1.0 Water Meter Filter Sensor

Analog TDS Meter V1.0 Water Meter Filter Sensor provides an efficient and reliable way to measure the Total Dissolved Solids (TDS) in water, indicating the overall purity of the liquid for various household and industrial projects. This sensor kit includes a waterproof probe and a signal transmitter board that converts the chemical concentration into a linear analog voltage. Consequently, you can easily interface the module with popular microcontrollers like Arduino, Raspberry Pi, or STM32 to monitor water quality in real-time. The device operates on a wide voltage range and features a simple plug-and-play interface. Therefore, hobbyists and engineers can integrate this sensor into automated filtration systems without complex circuitry. Furthermore, the waterproof nature of the probe ensures long-term durability when submerged in water tanks or hydroponic reservoirs.

Key Features:

• Wide Voltage Input: Supports an input range from 3.3 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic controllers.
• Analog Signal Output: Outputs a 0 V to 2.3 V analog signal, which simplifies the data acquisition process through standard ADC pins.
• Waterproof Probe: Features a high-quality, waterproof TDS probe that can remain submerged for extended periods to provide continuous monitoring.
• Simplified Connectivity: Uses a Gravity-standard 3-pin interface to ensure secure and easy wiring without the need for soldering on the transmitter end.
• High Accuracy: Employs an excitation source that prevents probe polarization, however, regular calibration is recommended for maximum precision.

Technical Specifications:

• Input Voltage: 3.3 V to 5.5 V
• Output Voltage: 0 V to 2.3 V
• Working Current: 3 mA to 6 mA
• TDS Measurement Range: 0 to 1000 ppm
• Measurement Accuracy: ±10% F.S. (at 25°C)
• Probe Interface: 2-Pin XH2.54
• Module Interface: PH2.0-3P (Gravity Compatible)
• Number of Probe Needles: 2

Mechanical Specifications:

• Module Material: FR-4 Fiberglass PCB
• Probe Material: Food-grade plastic and stainless steel needles
• Cable Type: Insulated waterproof cable for the probe
• Connector Durability: Rated for high-cycle plug-and-unplug operations

Dimensions:

• Signal Transmitter Board: ≈ 42 mm x 32 mm
• TDS Probe Length: ≈ 83 cm (including cable)
• Probe Diameter: ≈ 15 mm
• Total Weight: ≈ 30 g

Pinout and Wiring:

• Pin 1 (Signal / A): Analog output pin; connect this to an Analog Input pin (e.g., A0) on your microcontroller.
• Pin 2 (VCC / +): Power supply pin; connect to 3.3 V or 5 V.
• Pin 3 (GND / -): Ground pin; connect to the common system ground.
• Probe Connector: Insert the 2-pin waterproof probe connector into the black XH2.54 port on the transmitter board.

Datasheet Reference:

• Download Analog TDS Meter V1.0 Technical Reference

Commonly Used in:

• Smart Home Water Filters: Measuring the effectiveness of RO (Reverse Osmosis) membranes and activated carbon filters.
• Hydroponics: Monitoring nutrient concentration in water to ensure optimal plant growth conditions.
• Aquarium Maintenance: Tracking dissolved solids to maintain a healthy environment for sensitive aquatic life.

Applications:

• Water Purity Testing: Providing a quick assessment of tap water or bottled water quality.
• Environmental Monitoring: Detecting changes in the mineral content of streams and lakes.
• Industrial Liquid Processing: Controlling the concentration of minerals in boiler feed water or cooling systems.

Equivalent Models:

• DFRobot SEN0244: The original Gravity-branded TDS sensor upon which this V1.0 design is based.
• Analog Conductivity Sensor: A similar device that measures electrical conductivity (EC), which is mathematically related to TDS.
• Liquid Level and Quality Combo: Integrated modules that combine TDS measurement with temperature and pH sensing.

Package Includes:

• 1 x TDS Signal Transmitter Board (V1.0)
• 1 x Waterproof TDS Probe
• 1 x 3-Pin Analog Sensor Cable (Gravity Compatible)