Gravity: Analog Industrial-Grade pH Sensor / Meter Pro Kit V2

The Gravity: Analog pH Sensor / Meter Pro Kit V2 stands out for its industrial-grade durability, exceptional accuracy, and user-friendly design. It is an essential tool for anyone involved in precise water quality monitoring and management.

Industrial-Grade Performance

Designed for continuous operation, this sensor supports 7/24-hour monitoring with a lifespan exceeding 4380 hours, ensuring consistent performance in demanding environments.

Exceptional Accuracy

Achieving a measurement accuracy of ±0.1 pH at 25°C, the device employs a two-point calibration method, enabling users to effortlessly calibrate using standard buffer solutions (4.0 and 7.0). This precision is vital for applications where accurate pH levels are critical.

Robust Design and Compatibility

The sensor operates within a wide voltage range of 3.3 to 5.5V, making it compatible with various main control boards like Arduino and LattePanda. The plug-and-play design, featuring a BNC connector, simplifies setup and reduces installation time.

Arduino Connection Diagram

Attention：

1. The BNC connector and the signal conversion board must be kept dry and clean, otherwise, it will affect the input impedance, resulting in an inaccurate measurement. If it is damp, it needs to be dried.

2. The signal conversion board cannot be directly placed on a wet or semiconductor surface, otherwise, it will affect the input impedance, resulting in an inaccurate measurement. It is recommended to use the nylon pillar to fix the signal conversion board, and allow a certain distance between the signal conversion board and the surface.

3. The sensitive glass bubble in the head of the pH probe should avoid touching the hard material. Any damage or scratches will cause the electrode to fail.

4. After completing the measurement, disconnect the pH probe from the signal conversion board. The pH probe should not be connected to the signal conversion board without the power supply for a long time.

5. The bottle cap of the probe contains protective liquid (3.3mol/L KCL). Even if the bottle cap is screwed tightly, some protective liquid may still leak around the bottle cap, forming white crystals. But as long as there is still protective liquid in the bottle cap, it will not affect the life and accuracy of the probe. So please use it with confidence. It is recommended that the white crystals be poured back into the protective liquid in the bottle cap.

• 3.3~5.5V wide voltage input
• Hardware filtered output signal, low jitter
• Gravity connector and BNC connector, plug-and-play, no soldering required
• The software library supports two-point calibration and automatically identifies standard buffer solution
• Uniform size and connector, convenient for the design of mechanical structures
• Industrial Probe - Support 7*24 Measurement
• Upgraded Transmitter - More Accurate and Stable

Signal Conversion Board (Transmitter) V2

• Supply Voltage: 3.3~5.5V
• Output Voltage: 0~3.0V
• Probe Connector: BNC
• Signal Connector: PH2.0-3P
• Measurement Accuracy: ±0.1@25℃
• Dimension: 42mm*32mm/1.66*1.26in

pH Probe

• Probe Type: Industrial Grade
• Detection Range: 0~14
• Temperature Range: 0~60°C
• Accuracy : ± 0.1pH (25 ℃) 
• Response Time: <1min
• Probe Life: 7*24hours >0.5 years (depending on the water quality)
• Cable Length: 500cm

Unboxing. Analog pH meter pro V2 DFRobot Gravity for Arduino, ESP32, NodeMCU

• pH Probe (Industrial Grade) x1
• pH Signal Conversion Board V2 x1
• Gravity Analog Sensor Cable x1
• Waterproof Gasket x2
• Screw Cap for BNC Connector x1
• M3 * 10 nylon pillar x4
• M3 * 5 screws x8