SKU: SENS-3018
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DFRobot Gravity Lab Grade Analog pH Sensor/Meter Kit V2 - BNC Probe, PH2.0-3P Connector

₹4,659.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity Lab Grade Analog pH Sensor/Meter Kit V2 is a precision instrument for measuring solution acidity/alkalinity (0-14 pH) with a 0-3V analog output. It features a wide 3.3-5.5V supply range for direct compatibility with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V microcontrollers via its plug-and-play Gravity PH2.0-3P connector.

Features

  • Laboratory-grade pH probe with BNC connector for accurate 0-14 pH measurement (±0.1 accuracy at 25°C).
  • Wide 3.3-5.5V operating voltage compatible with 5V & 3.3V logic systems (Arduino, Raspberry Pi, ESP32).
  • Hardware-filtered 0-3.0V analog output signal for stable, low-jitter readings.
  • Plug-and-play design with Gravity PH2.0-3P signal connector and BNC probe, requiring no soldering.
  • Software library supports two-point calibration with automatic identification of 4.0 and 7.0 pH standard buffer solutions.

Out of stock

Description

The DFRobot Gravity Analog pH Meter V2 is an upgraded sensor module designed for precise measurement of solution pH, reflecting its acidity or alkalinity. It employs a laboratory-grade glass electrode probe connected via a standard BNC interface, providing a stable analog voltage signal proportional to the pH value. The onboard voltage regulator and signal conditioning circuitry ensure a clean, low-jitter output suitable for direct ADC input on microcontrollers.

This version features improved precision and a user-friendly software library that simplifies the critical two-point calibration process. The module operates reliably across a broad temperature range of 0°C to 60°C, making it suitable for applications in aquaponics, hydroponics, aquaculture, and environmental water quality monitoring where robust and accurate pH data is essential.

Key Features

  • Laboratory-grade pH probe ensures high measurement accuracy and long-term stability.
  • Onboard voltage regulator supports a wide 3.3V to 5.5V input range for flexible system integration.
  • Hardware filtering on the analog output path minimizes signal noise and jitter.
  • Gravity-series PH2.0-3P connector enables plug-and-play connectivity with DFRobot and compatible shields.
  • Standard BNC connector allows for easy probe replacement or use with alternative electrodes.
  • Optimized software library facilitates straightforward two-point calibration for enhanced measurement accuracy.
  • Compact and standardized form factor (42mm x 32mm) simplifies mechanical integration into enclosures or systems.

Applications

  • Precision pH monitoring in hydroponic and aquaponic nutrient solution systems.
  • Water quality analysis for aquaculture tanks and environmental sampling.
  • Laboratory-grade pH measurement for educational and research experiments.
  • Industrial process control and effluent monitoring in wastewater treatment.
  • Automated nutrient dosing systems in precision agriculture and greenhouse management.

Technical Specifications

Operating Voltage3.3 to 5.5 VDC
Output Signal0 to 3.0V Analog
Probe ConnectorBNC
Signal ConnectorPH2.0-3P
Measurement Range0 to 14 pH
Accuracy (@25°C)±0.1 pH
Probe TypeLaboratory Grade
Operating Temperature0°C to +60°C
Zero Point (pH7)7 ± 0.5 pH
Response Time< 2 minutes
Internal Resistance< 250 MΩ
Dimensions (L x W)42 mm x 32 mm

Frequently Asked Questions

What is the output signal type and range of this pH sensor?

The sensor provides a 0 to 3.0V analog output voltage that is linearly proportional to the measured pH value within the 0-14 pH range. This signal can be directly connected to an analog-to-digital converter (ADC) pin on a microcontroller like an Arduino for reading.

How do I calibrate the DFRobot Gravity pH Sensor V2?

Calibration is performed using a two-point method with standard buffer solutions (typically pH 4.0 and 7.0 or 7.0 and 10.0). The provided software library simplifies this process by automatically identifying these standard buffers, guiding the user through the immersion and reading steps to calculate accurate calibration coefficients.

Is this sensor compatible with 3.3V systems like the Raspberry Pi or ESP32?

Yes. The module has an onboard voltage regulator that accepts a wide input range of 3.3V to 5.5V. Its analog output is referenced to its supply voltage, making it safe for 3.3V logic microcontrollers. Ensure your microcontroller's ADC reference voltage matches the sensor's output range for accurate readings.

Can I replace the pH probe if it gets damaged or wears out?

Yes. The sensor module uses a standard BNC connector, allowing you to disconnect and replace the included laboratory-grade glass electrode with any compatible BNC-type pH probe. This ensures the longevity and maintainability of your measurement setup.

Package Includes

  • 1 x DFRobot Gravity Lab Grade Analog pH Sensor/Meter Kit V2 (Module)

Additional Information

Weight 0.34 kg
Dimensions 4.2 × 3.2 cm