The Gravity: Analog Industrial-Grade pH Sensor / Meter Pro Kit V2 is a high-precision, durable, and user-friendly solution for continuous water quality monitoring. Designed for 24/7 operation, it offers long-term stability with a probe life of over 4380 hours and an accuracy of ±0.1 pH at 25°C. Using a two-point calibration method with standard buffer solutions (pH 4.0 and 7.0), users can easily maintain precise measurements in critical applications. The kit features a wide 3.3–5.5V operating voltage, making it compatible with Arduino, LattePanda, and other low-voltage controllers. Its industrial-grade probe ensures durability in harsh water environments, while the BNC connector and Gravity 3-pin interface simplify integration and reduce setup time. Safety precautions ensure optimal performance, including keeping the signal board dry, protecting the sensitive glass probe, and maintaining the protective KCL liquid in the probe cap. With its robust design, upgraded transmitter, and stable hardware-filtered signal output, this kit is an excellent choice for applications such as aquaculture, hydroponics, lab research, wastewater treatment, and environmental monitoring. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Features:
Industrial-Grade Probe – Supports 24/7 continuous operation with long service life.
High Accuracy – ±0.1 pH at 25°C with quick response time (<1 min).
Wide Compatibility – Works with Arduino, LattePanda, and 3.3–5.5V MCUs.
Easy Calibration – Two-point calibration with standard buffer solutions.
Plug-and-Play Design – Gravity connector and BNC interface, no soldering needed.
Durable & Reliable – Stable hardware-filtered signal with low jitter.
Versatile Applications – Ideal for hydroponics, aquaculture, and water analysis.
Upgraded Transmitter – Ensures accuracy and stability for long-term monitoring.
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Applications:
Aquaculture – Monitor pH levels in fish tanks and ponds for healthy ecosystems.
Hydroponics & Agriculture – Maintain optimal nutrient solution pH for plant growth.
Laboratory Use – Reliable pH measurements in scientific and educational experiments.
Industrial Monitoring – pH control in wastewater treatment and chemical processing.
Environmental Studies – Field measurement of natural water sources.
Smart IoT Systems – Integrate with microcontrollers for automated water quality monitoring.
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| General Specifications |
| Model | Gravity: Analog pH Sensor / Meter Pro Kit V2 |
| Operating Voltage | 3.3–5.5V |
| Output Voltage | 0–3.0V |
| Measurement Accuracy | ±0.1 pH @ 25°C |
| Detection Range | 0–14 pH |
| Probe Type | Industrial-grade |
| Response Time | <1 min |
| Operating Temperature | 0–60°C |
| Probe Life | >4380 hours (24/7 operation) |
| Probe Connector | BNC |
| Signal Connector | PH2.0-3P (Gravity 3-pin) |
| Signal Board Dimensions | 42 × 32 mm (1.66 × 1.26 in) |
| Cable Length | 500 cm |
| Service Life | >0.5 years (depending on water quality) |
| Application | Water quality monitoring, lab, aquaculture, hydroponics |
| Shipment Weight | 0.120 kg |
| Shipment Dimensions | 15 × 10 × 4 cm |
Please allow 5% measuring deviation due to manual measurement.
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Documentation:
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.
Package Includes:
1 x Gravity: Analog Industrial-Grade pH Sensor / Meter Pro Kit V2
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