TDS Sensor Meter V1.0 Board Module ( Measuring Water Quality)


TDS (Total Dissolved Solids) measures how many milligrams of soluble solids dissolved in one liter of water. The measure is expressed in PPM (part per million). In general, the higher the TDS value, the more soluble solids dissolved in water, and the less clean the water is. Therefore, the TDS value can be used as one of the references for reflecting the cleanliness of water.

Thanks to this product, it becomes possible to create your own measurement, collection and data transmission system. It is even possible to use this information to automate water treatment cycles. The TDS probe is waterproof; it can be immersed in water for long time measurement. However, the signal transmitter board is not waterproof.

Wide Voltage Input: 3.3~5V
Good Compatibility Output: 0~2.3V analog signal output, compatible with 5V or 3.3V controller
AC Excitation Source: effectively prevent probe from polarization
Waterproof Probe
Easy to Use: Arduino compatible, simple connection, plug and play without soldering

Features and Specifications

This tutorial refers to the TDS Meter V1.0 from keystudio. Here are the sensor parameters:

TDS Meter:

  • Input Voltage: DC 3.3 ~ 5V
  • Output Voltage: 0 ~ 2.3V
  • Working Current: 3 ~ 6mA
  • TDS Measurement Range: 0 ~ 1000ppm
  • TDS Measurement Accuracy: ± 10% F.S. (25 ℃)
  • Module Interface: XH2.54-3P
  • Electrode Interface: XH2.54-2P

TDS Probe:

  • Number of Needle: 2
  • Total Length: 60cm
  • Connection Interface: XH2.54-2P
  • Color: White
  • Waterproof Probe
Package included:
 Analog TDS Sensor/Meter for Arduino x1
Waterproof TDS Probe x1
3Pin Analog Sensor Cable x1