Gravity: 7/24 Industrial Analog pH Meter Kit (Arduino, Raspberry Pi)
📦 Location of the warehouse: China
Free shipping for you
Free Shipping from 30€ in Germany, 50€ in the EU!
Trustpilot rating: 4.4/5.0
Thank you for your support - rate us on Trustpilot!
Gravity: 7/24 Industrial Analog pH Meter Kit (Arduino, Raspberry Pi)
The Gravity: 7/24 Industrial Analog pH Meter Kit V2 is a professional-grade solution designed for continuous, real-time water quality monitoring. Built with an industrial-grade pH probe and a high-precision signal conversion board, this kit delivers exceptional stability, durability, and accuracy, making it ideal for long-term deployment in challenging environments such as aquaculture systems, chemical monitoring, and environmental water testing.
Projects
Unboxing. Analog pH meter pro V2 DFRobot Gravity for Arduino, ESP32, NodeMCU
Industrial-Grade Durability
The industrial pH probe supports 24/7 continuous measurement and offers a lifespan exceeding 4380 hours. Its rugged design ensures reliable performance in harsh or long-term monitoring scenarios.
High Accuracy & Auto Calibration
With a measurement accuracy of ±0.1 pH at 25°C, this kit uses a two-point calibration method. The included software library can automatically identify standard buffer solutions (pH 4.0 and 7.0), simplifying the calibration process while maintaining precision.
Wide Compatibility & Easy Integration
The system operates on a 3.3V to 5.5V input range, making it fully compatible with Arduino, Raspberry Pi, LattePanda, and other popular microcontroller platforms. The Gravity interface and BNC connector allow for a plug-and-play setup—no soldering required.
Key Features
-
Wide voltage input (3.3~5.5V) for broad microcontroller support
-
Hardware-filtered analog output, reducing noise and signal jitter
-
Two-point calibration with automatic buffer recognition
-
Gravity + BNC connectors, plug-and-play design
-
Industrial-grade pH probe for 24/7 monitoring
-
Upgraded transmitter board for enhanced stability and precision
-
Standardized dimensions and connectors for easier hardware integration
Technical Specifications
Signal Conversion Board (Transmitter V2)
-
Supply Voltage: 3.3~5.5V
-
Output Voltage: 0~3.0V
-
Measurement Accuracy: ±0.1 pH @ 25°C
-
Probe Connector: BNC
-
Signal Connector: PH2.0-3P
-
Dimensions: 42mm × 32mm (1.66 × 1.26 in)
pH Probe (Industrial Grade)
-
Detection Range: 0 ~ 14 pH
-
Accuracy: ±0.1 pH @ 25°C
-
Temperature Range: 0 ~ 60°C
-
Response Time: < 1 minute
-
Probe Life: > 4380 hours (continuous 7/24 operation)
-
Cable Length: 500 cm
Package Includes
-
1x Industrial Grade pH Probe
-
1x Signal Conversion Board V2
-
1x Gravity Analog Sensor Cable
-
2x Waterproof Gasket
-
1x Screw Cap for BNC Connector
-
4x M3 × 10 Nylon Pillars
-
8x M3 × 5 Screws
Usage Notes
-
Keep the BNC connector and signal board dry and clean to prevent impedance issues.
-
Avoid placing the board on wet surfaces; use nylon spacers for safe mounting.
-
Do not allow the probe tip's glass bulb to contact hard materials.
-
Disconnect the probe after use if the system is powered off for long durations.
-
White crystals may form around the probe cap due to protective KCL solution; this is normal and does not affect performance.
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
