Industrial Grade Analog PH Sensor Kit for Arduino

Industrial Grade Analog PH Sensor Kit for Arduino

The Industrial Grade Analog pH Sensor Kit for Arduino is engineered for easy integration with Arduino controllers, providing a simple and efficient setup. The kit includes a Power Indicator LED, a BNC connector, and a PH2.0 sensor interface, all designed to enhance functionality. To use, simply connect the pH sensor to the BNC connector and plug the PH2.0 interface into any Arduino analog input port. With pre-programmed code, you can quickly and easily obtain accurate pH readings. The kit is packaged in a compact plastic box with foam inserts, ensuring safe and secure storage and transport.

Applications

Water quality testing

Aquaculture

Note: This is a laboratory probe, it can’t be immersed in the liquid for a too long time.

Step to Use the pH Meter:

Cautions:

• Please use an external switching power supply, and the voltage as close as possible to the +5.00V. More accurate the voltage, the higher the accuracy!
• Before the electrode in continuous use every time, you need to calibrate it by the standard solution, in order to obtain more accurate results. The best environment temperature is about 25 ℃, and the pH value is known and reliable, close to the measured value. If you measure the acidic sample, the pH value of the standard solution should be 4.00. If you measure the alkaline sample, the pH value of the standard solution should be 9.18.Subsection calibration, just in order to get better accuracy.
• Before the pH electrode measured different solutions, we need to use water to wash it. We recommend using deionized water.

1. Connect equipment according to the graphic, that is, the pH electrode is connected to the BNC connector on the pH meter board and then use the connection lines, the pH meter board is connected to the analog port 0 of the Arduino controller. When the Arduino controller gets power, you will see the blue LED on board is on.
2. Upload the sample code to the Arduino controller.
3. Put the pH electrode into the standard solution whose pH value is 7.00，or directly shorted the input of the BNC connector. Open the serial monitor of the Arduino IDE, you can see the pH value printed on it, and the error does not exceed 0.3. Record the pH value printed, then compared with 7.00, and the difference should be changed into the “Offset” in the sample code. For example, the pH value printed is 6.88, so the difference is 0.12. You should change the “# define Offset 0.00” into “# define Offset 0.12” in your program.
4. Put the pH electrode into the pH standard solution whose value is 4.00. Then wait about one minute, adjust the gain potential device, let the value stabilize at around 4.00. At this time, the acidic calibration has been completed and you can measure the pH value of an acidic solution.
   

Note: If you want to measure the pH value of other solutions, you must wash the pH electrode first!

• According to the linear characteristics of the pH electrode itself, after the above calibration, you can directly measure the pH value of the alkaline solution, but if you want to get better accuracy, you can recalibrate it. The alkaline calibration uses the standard solution whose pH value is 9.18. Also, adjust the gain potential device, let the value stabilize at around 9.18. After this calibration, you can measure the pH value of the alkaline solution.

Specification:

Package Includes

• 1 x pH probe with cable and BNC connector.
• 1 x pH sensor circuit board.

Documentation

Sample Code

Video

Industrial Grade Analog PH Sensor Kit for Arduino Overview

The Industrial Grade Analog PH Sensor Kit for Arduino is a laboratory-grade module designed to measure pH levels in various aqueous environments. It features a BNC-based pH probe interface and onboard electronics for 5 VDC operation, making it ideal for rapid integration with Arduino boards for accurate pH monitoring.

Key Features of Industrial Grade Analog PH Sensor Kit for Arduino

• 5 VDC power supply for direct Arduino compatibility
• Industrial-grade pH probe with BNC connector and PH2.0 interface
• Onboard gain adjustment potentiometer for fine calibration
• Built-in power indicator LED for quick status checks
• Fast response time ≤ 1 minute across 0–50 ℃ measurement range
• Genuine product and fast shipping from Zbotic

Applications and Use Cases

• Water quality testing in laboratories and field studies
• Aquaculture systems to monitor pond or tank pH
• Hydroponic farming for nutrient solution control
• Swimming pool and spa pH level monitoring
• Environmental monitoring of rivers and lakes
• Educational projects and DIY chemistry experiments

How to Use Industrial Grade Analog PH Sensor Kit for Arduino

Connect the pH probe to the module’s BNC connector and plug the PH2.0 interface into any Arduino analog input pin. Power the module with 5 V from the Arduino, adjust the onboard potentiometer while dipping the probe in standard buffer solutions, and upload the provided example sketch. Read calibrated pH values directly in your Arduino IDE or send them to a display or data logger.

Why Buy from Zbotic?

• Genuine Products: All items sourced from authorized distributors
• Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
• Free Shipping: Free delivery on qualifying orders
• COD Available: Cash on Delivery, UPI, cards, net banking
• Technical Support: Expert help for setup and troubleshooting
• Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

Can I leave the pH probe immersed continuously?

No. This is a laboratory-grade probe and is not intended for permanent immersion. After each session, rinse the probe with distilled water and store it according to manufacturer guidelines to maintain accuracy and longevity.

Which Arduino boards work with this sensor kit?

Any Arduino board with a 5 V output and analog input pins is compatible, including Arduino Uno, Nano, Mega, and Leonardo. Simply connect the module’s VCC to 5 V, GND to ground, and the signal pin to an analog input.

How do I calibrate the pH sensor for accurate readings?

Dip the probe in a pH 7.00 buffer, adjust the gain potentiometer until the Arduino reads 7.00, then repeat with a pH 4.00 buffer for two-point calibration. Upload and run the example code provided to verify linear response across the range.

Related Articles:

INA3221 Triple-Channel Power Monitor for Multi-Rail Systems

Managing power across multiple voltage rails simultaneously is a daily challenge in embedded systems, single-board computers, robotics, and...

Read More →

HCSR501 PIR Sensor: Sensitivity and Time Delay Tuning

Table of Contents Introduction to HC-SR501 PIR Sensor How PIR Sensors Detect Motion Hardware Overview and Pinout Sensitivity...

Read More →

Best Sensors for Arduino Projects: Complete Buying Guide India 2026

Choosing the best sensors for Arduino projects can be overwhelming when you're staring at dozens of options online....

Read More →