Industrial pH Sensor Module for Arduino, ESP32, Raspberry Pi
Industrial Grade Liquid pH Sensor Module for Arduino, ESP32, Raspberry Pi
This industrial liquid pH sensor module accurately measures pH from 0 to 14 with ±0.1 pH resolution. Designed for Arduino, ESP32, Raspberry Pi, and other microcontrollers with analog input, it outputs a voltage proportional to pH for real-time monitoring. Ideal for hydroponics, aquaponics, water quality testing, and lab experiments.
Key Specifications
| Specification | Value |
|---|---|
| Measurement Range | 0-14 pH |
| Accuracy | ±0.1 pH (at 25°C) |
| Operating Voltage | 5V DC |
| Output Signal | 0-5V analog (calibrated for pH) |
| Electrode Connector | BNC |
| Operating Temperature | 0-60°C |
What You Can Build With This
- Hydroponic nutrient monitoring system
- Aquarium pH controller
- Drinking water quality tester
- Industrial effluent pH logger
Compatibility
Compatible with any microcontroller having analog input pins: Arduino Uno/Mega/Nano, ESP32, ESP8266, Raspberry Pi (with external ADC), STM32, and others. Works at 5V logic level; for 3.3V boards, use a voltage divider or ensure ADC tolerance.
Wiring Notes
Connect the BNC probe interface to the module, then wire VCC to 5V, GND to GND, and analog out (Po) to an ADC pin. For accurate readings, calibrate with buffer solutions (pH 4.01 and 6.86) before first use. The output voltage is typically mV per pH unit, requiring software conversion.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, connect the sensor's analog output to any analog pin (A0-A5) and power with 5V. Use the Arduino's ADC to read pH values after calibration.
How often does the electrode need replacement?
The glass electrode typically lasts 1-2 years with proper care. Store in storage solution (3M KCl) when not in use to extend life.
Can I use this for continuous water monitoring?
Yes, it is designed for continuous immersion. Ensure the probe tip stays wet and avoid drying; intermittent cleaning with pH calibration solutions maintains accuracy.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items