Analog pH Sensor Electrode with Amplifier Circuit
Analog pH Sensor Electrode with Amplifier Circuit
Analog pH Sensor Electrode with Amplifier Circuit
Accurately measure the acidity or alkalinity of any liquid solution with this Analog pH Sensor Electrode paired with a dedicated amplifier circuit board. Designed for seamless integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers, this module delivers reliable pH readings from 0 to 14 with a simple analog voltage output. Whether you're building a hydroponics controller, water quality monitor, or aquarium management system, this sensor provides the precision and ease of use your project demands. Available now from The Tech Depot, Bengaluru, with fast shipping and full technical support.
Specifications
| Module Type | Analog pH Sensor with Signal Conditioning Board |
| pH Measurement Range | 0 - 14 pH |
| Measurement Accuracy | +/- 0.1 pH (at 25 degreesC) |
| Operating Voltage | 5V DC |
| Output Signal | Analog Voltage (0 - 5V corresponding to pH 0 - 14) |
| Response Time | <= 1 minute |
| Operating Temperature | 0 degreesC to 60 degreesC |
| Probe Connector | BNC Connector |
| Amplifier IC | Op-Amp based signal conditioning circuit |
| Board Dimensions | Approx. 43 mm x 32 mm |
| Probe Length | Approx. 150 mm (electrode body) |
| Cable Length | Approx. 660 mm (BNC cable) |
| Calibration | Manual potentiometer adjustment on amplifier board |
| Microcontroller Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi (with ADC), STM32, PIC |
| Origin | Original/Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Wide pH Range: Measures the full 0-14 pH spectrum, covering highly acidic to highly alkaline solutions
- Onboard Amplifier Circuit: High-impedance op-amp signal conditioning board converts the weak electrode millivolt signal into a clean, readable analog voltage for microcontrollers
- Simple Analog Output: Connect directly to any analog input pin - just read the voltage and convert to pH using a straightforward formula
- BNC Connector Interface: Industry-standard BNC connection between the electrode and amplifier board allows easy probe replacement and secure attachment
- Onboard Calibration Potentiometer: Fine-tune the offset voltage using the trimmer pot to calibrate against standard buffer solutions for maximum accuracy
- LED Power Indicator: Onboard LED confirms the module is powered and operational
- Compact & Breadboard-Friendly: Small amplifier PCB with clearly labeled pins (V+, GND, Po) integrates effortlessly into prototyping setups
- Low Power Consumption: Operates on standard 5V supply, drawing minimal current - ideal for battery-powered and portable applications
- Glass Electrode Probe: Sensitive glass bulb electrode provides accurate electrochemical response across the full pH range
Why Choose This Analog pH Sensor?
- 100% Authentic: Sourced directly from trusted suppliers with verified component quality
- Plug-and-Play Integration: Three-wire connection (VCC, GND, Signal) makes setup effortless with any development board
- Reliable & Repeatable: Consistent readings after proper calibration with pH 4.0 and pH 7.0 buffer solutions
- Extensive Community Support: Widely used module with abundant Arduino libraries, code examples, and tutorials available online
- 1-5 days shipping: Fast delivery from our Bengaluru warehouse to most locations across India
- Expert Technical Support: Our engineering team is available 24/7 via email and WhatsApp to help with wiring, calibration, and code
How It Works
The pH electrode is an electrochemical sensor containing a glass membrane that generates a small voltage (typically +/-414 mV) proportional to the hydrogen ion concentration of the solution it is immersed in. This millivolt-level signal has extremely high source impedance, making it impossible to read directly with a standard microcontroller ADC. The included amplifier circuit board uses a high-input-impedance operational amplifier to buffer, amplify, and offset this signal into a 0-5V range that maps linearly to pH 0-14. You simply connect the board's analog output to an ADC pin, read the voltage, and apply a linear conversion formula (derived during calibration) to obtain the pH value.
Calibration Guide
- Prepare Buffer Solutions: Obtain standard pH 4.0 and pH 7.0 calibration buffer solutions (available separately)
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Analog pH Sensor Electrode with Amplifier Circuit Online in India
Purchase the Analog pH Sensor Electrode with Amplifier Circuit online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Analog pH Sensor Electrode with Amplifier Circuit with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Analog pH Sensor Electrode with Amplifier Circuit at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.