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The product is intended for specialists and requires qualified and authorized personnel. The product does not include assembly/use instructions . Putting the product into operation by unqualified persons leads to the loss of the warranty according to the Terms and Conditions on the site.
The specified technical parameters (current, power, etc.) represent maximum allowable values under ideal operating conditions. For safe use and optimal lifespan, it is recommended to operate the product continuously at no more than 50% of the specified maximum values.
TDS sensor module, water quality, analog probe, 3.3-5V
Water conductivity and TDS estimation module, ideal for monitoring water quality with Arduino and other compatible boards. It offers stable analog output for fast readings, operates at 3.3-5V with low power consumption, includes a durable stainless steel probe and easily integrates into aquariums, hydroponics, filters or educational projects.
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This TDS module is designed to measure water conductivity and estimate the total dissolved solids concentration, offering a practical solution for water quality monitoring in projects with Arduino UNO and other compatible development boards.
It works by measuring electrical conductivity, where a higher amount of salts, minerals, or other dissolved substances causes an increase in conductivity.
The module provides an analog output proportional to this value, allowing the microcontroller to calculate the TDS level in ppm or electrical conductivity in µS/cm.
It can be powered between 3.3 and 5.5 VDC, has a low current consumption of 3 - 6 mA, and an analog interface of 0 - 2.3V, making it easy to integrate into water testing applications, hydroponics, aquaristics, filtration systems, or educational projects.
The stainless steel probe is resistant to repeated use, and the compact dimensions of the module allow easy mounting in various electronic assemblies.
Specifications:
Operating voltage: 3.3 - 5.5 VDC
Operating current: 3 - 6 mA
Interface: Analog 0 - 2.3V
Measurement range: 0 - 1000 ppm
Accuracy: ± 10% F.S. (25 ℃)
Probe material: Stainless steel
Probe length: ~ 60 mm
Probe diameter: 12 mm
Cable length: ~60 cm
Operating temperature: 5 ~ 55°C
Dimensions: 41.7 x 32.2 mm
Pinout:
| Pin Number | Pin Name | Pin Description |
|---|---|---|
| 1 | A | Signal |
| 2 | + | Power Supply (3.3-5V) |
| 3 | - | Ground (GND) |
Usage:
After powering, the module provides at the output an analog voltage proportional to the water conductivity. This value can be read by a microcontroller and converted into TDS ppm using the corresponding formula in software.
For the most accurate results, the probe must be kept fully immersed in water, without air bubbles on the electrode surfaces. Periodic cleaning of the probe is recommended to prevent deposits that can affect measurement accuracy.
The module is suitable for water monitoring in aquariums, hydroponic systems, educational experiments, and general water quality checking applications.
Standard Values:
Package Contents:
1x TDS Meter Module V1.0
1x Probe
1 x 3-wire Connector
Produs destinat utilizarii in proiecte electronice, automatizari, prototipare, educatie si cercetare.
Produsul trebuie utilizat numai conform specificatiilor tehnice mentionate in descriere si/sau in documentatia produsului.
Avertismente generale de siguranta:
Nu utilizati produsul la tensiuni, curenti sau temperaturi peste valorile specificate.
Montajul si conectarea trebuie realizate de persoane cu cunostinte tehnice minime in domeniul electric/electronic.
Evitati scurtcircuitele, inversarea polaritatii si conectarea gresita a alimentarii.
Nu lasati produsul alimentat nesupravegheat in timpul testelor.
Produsul nu este jucarie si nu este destinat copiilor.
Pentru modulele electronice, se recomanda utilizarea in carcase, panouri sau montaje protejate, dupa caz.
Identificare produs:
Denumirea produsului, codul/SKU-ul si caracteristicile tehnice sunt mentionate in pagina produsului si/sau pe eticheta ambalajului.
Producator / Importator / Distribuitor:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Website: www.sigmanortec.ro
Persoana responsabila in UE:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Documentatie si siguranta:
Pentru informatii suplimentare, fise tehnice, declaratii de conformitate sau instructiuni, ne puteti contacta la [email protected].
#define TDS_PIN A0
float Vref = 5.0; // Reference voltage
void setup() {
Serial.begin(9600);
}
void loop() {
int analogValue = analogRead(TDS_PIN);
float voltage = analogValue * Vref / 1024.0;
float tds = (133.42 * voltage * voltage * voltage -
255.86 * voltage * voltage +
857.39 * voltage) * 0.5;
Serial.print("TDS: ");
Serial.print(tds);
Serial.println(" ppm");
delay(1000);
}
