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मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
PH Sensor Module with BNC Electrode Probe – High-Accuracy Liquid Quality Tester for Arduino, ESP32, and Hydroponics Automation Systems

PH Sensor Module with BNC Electrode Probe – High-Accuracy Liquid Quality Tester for Arduino, ESP32, and Hydroponics Automation Systems

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ParameterDetailed Specification
Measuring Range0.00 to 14.00 pH
Operating Voltage5.0V DC
Output TypeAnalog Voltage (Linear)
Module Accuracy$\pm$ 0.1 pH (at 25°C)
Probe ConnectorStandard BNC Interface
Operating Temperature0°C to 60°C
Price
₹ 1,423.73 ₹ 1,423.73
(Tax included)

बारकोड: 8741257

Product Description The pH Sensor Module with BNC Electrode Probe is a precision analytical tool designed for real-time monitoring of liquid acidity and alkalinity. The kit consists of an industrial-grade pH electrode with a universal BNC connector and a signal conditioning board that converts the electrode's high-impedance millivolt signal into a stable analog voltage. This analog output (AO) can be directly read by the ADC of an Arduino, ESP32, or Raspberry Pi. Optimized for long-term reliability, it is the standard choice for hydroponics automation, aquarium water quality management, and chemical laboratory prototypes. The module features an on-board potentiometer for easy calibration against standard pH 4.0 or 7.0 buffer solutions.

Key Features

  • Universal BNC Interface: Allows for quick connection and easy replacement of the pH electrode probe.

  • On-board Calibration: Features a multi-turn potentiometer to calibrate the output voltage to match specific pH levels precisely.

  • Wide Detection Range: Capable of measuring the full spectrum from pH 0 (Highly Acidic) to pH 14 (Highly Alkaline).

  • Low Power Consumption: Operates efficiently at 5V with a very low current draw, ideal for continuous monitoring systems.

  • Standard Analog Output: Provides a linear voltage signal proportional to the pH value, simplifying code implementation.

Technical Details

  • Operating Principle: The electrode generates a voltage based on the hydrogen ion activity in the liquid, which the module amplifies and filters.

  • Signal Conditioning IC: Utilizes high-precision op-amps to handle the extremely high impedance of the pH probe.

  • Voltage-to-pH Mapping: Typically outputs approximately 2.5V at pH 7.0 (neutral), decreasing or increasing as the acidity/alkalinity changes.

  • Response Speed: Achieves a stable reading within 1 minute, with a high sampling rate for rapid fluctuations.

  • Probe Construction: The glass electrode is protected by a durable plastic housing, suitable for varied liquid types.

  • Reference System: Features a non-refillable Ag/AgCl reference system for maintenance-free operation during its lifecycle.

  • Gain Adjustment: Integrated trimmer allows for the adjustment of the signal gain to maximize resolution for specific microcontrollers.

  • Temperature Compensation: While calibrated for 25°C, the module maintains high stability across a 0-60°C range.

  • Interface Pins: Standard 3-pin interface: VCC (5V), GND (Ground), and AO (Analog Output).

  • Power Stability: Features on-board filter capacitors to minimize noise from the power supply affecting the sensitive analog signal.

  • LED Feedback: A bright on-board power LED provides immediate confirmation of the module's operational state.

  • Mounting Design: The PCB includes four M3 mounting holes for secure attachment to enclosures.

  • Electrode Storage: The probe comes with a protective cap containing KCL storage solution to keep the bulb hydrated.

  • Chemical Resistance: The probe body is resistant to most common household and agricultural chemicals.

  • Logic Compatibility: Output is 0-5V; for 3.3V systems like ESP32, a simple voltage divider or logic level shifting is recommended.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: Do not connect 9V directly to the module. Use a 7805 Voltage Regulator to provide exactly 5V. High voltage will cause signal drift and may damage the op-amp circuitry.

  • 18650 Cell: For portable testing, use two 18650 cells with a Buck Converter to 5V. Stability is key for pH sensing; we recommend adding a 100uF electrolytic capacitor across the power rails to prevent noise.

  • IC & Capacitor Tip: pH probes are extremely sensitive to electromagnetic interference. Use a 0.1uF ceramic capacitor on the AO pin. In your code, implement a Kalman Filter or a simple averaging algorithm to smooth out the analog readings.

  • Related Products: We recommend pairing this with our TDS Sensors, Liquid Level Sensors, and 5V Relay Modules for automated nutrient dosing in hydroponic setups.

Package Includes

  • 1 x pH Sensor Signal Conditioning Module.

  • 1 x pH Electrode Probe with BNC Connector.

  • 1 x PH2.0 3-Pin Connecting Cable.

Disclaimer Image is for illustration purpose only 2-3 lines. The pH probe bulb must stay moist; never store it dry. Calibration using buffer solutions is required before first use and periodically thereafter to ensure accuracy.