Gravity: Analog TDS Sensor

Q: Hi there, May I know is this sensor compatible for Raspberry Pi 3 microcomputer? One more question Is this sensor can be use for industrial propose thanks.

You need to use an ADC for your RPi to use this sensor. and this is not an industrial sensor, you can't use this for industrial purpose.

Q: Does this sensor have a temperature sensor? How to make the temperature compensation?

This TDS probe has no temperature sensor, but the temperature compensation algorithm is reserved in the sample code. The temperature variable in the sample code will default to 25 °C without a temperature sensor. You can add a waterproof temperature sensor to read the temperature,then update the temperature variable, to make automatic temperature compensation.

1. Example Code for Arduino-Measure TDS Value

This article demonstrates how to measure Total Dissolved Solids (TDS) using Arduino by providing detailed hardware and software preparations, a wiring diagram, cautions, and sample code for accurate readings.

2. Example Code for Arduino-Calibrate and Measure TDS Value

The article offers a detailed guide on how to calibrate and measure TDS values using Arduino with the analog TDS sensor. It includes hardware and software setup, wiring instructions, sample code, and step-by-step calibration procedures, ensuring accurate sensor readings and effective temperature compensation.

Parameter	Specification
Input Voltage	3.3 ~ 5.5V
Output Voltage	0 ~ 2.3V
Working Current	3 ~ 6mA
TDS Measurement Range	0 ~ 1000ppm
TDS Measurement Accuracy	± 10% F.S. (25 ℃)
Module Size	42 * 32mm
Module Interface	PH2.0-3P
Electrode Interface	XH2.54-2P

Parameter	Specification
Number of Needle	2
Total Length	83cm
Connection Interface	XH2.54-2P
Colour	Black
Other	Waterproof Probe

Num	Label	Description
1	-	Power GND(0V)
2	+	Power VCC(3.3 ~ 5.5V)
3	A	Analog Signal Output(0 ~ 2.3V)
4	TDS	TDS Probe Connector
5	LED	Power Indicator

Gravity: Analog TDS Sensor

Specification

Pinout