HH SCIENCE HH5200i Conductivity Electrode| Two-Electrode Graphite Digital Conductivity Sensor
US$180.00
The HH SCIENCE HH5200i is a digital two-electrode conductivity sensor with an integrated microprocessor and graphite sensing element, offering direct RS485 output, high chemical resistance, and reliable measurement across a broad conductivity range.
Key Features:
- Wide-range conductivity measurement
- Built-in microprocessor with RS485 Modbus output
- Graphite electrode for acid/alkali corrosion resistance
- No need for multiple cell constants
- IP68 waterproof and submersible
- G3/4 threaded body for inline or immersion use
- Size Guide
Technique Guide
Temperature Compensation Options NTC 2.252K, NTC 5K, NTC 10K, NTC 22K, NTC 30K, PT100, PT1000 (optional) Cable Connection Integrated direct-connection cable, S8, S8M, S7, K8S, VP4, VP, K2, K9, 4 PIN - Delivery & Return
Shipping
At HH SCIENCE, we serve both B2C and B2B customers with global shipping options tailored to your needs.
B2C Orders
We offer free international shipping to the EU and USA on all retail items via EMS/EUB. Customers are responsible for any applicable customs duties and local taxes in their country. The standard delivery time is 15–20 business days.B2B Orders
For wholesale and business orders, we ship via air freight, sea freight, or other available international logistics methods. Shipping methods, costs, and lead times vary based on order volume and destination, and are discussed on a case-by-case basis.As most of our products are customizable, the production lead time may vary and will be confirmed upon order placement.
Refund Policy
We offer 100% refunds only in cases of confirmed factory defects.
Refunds are processed after the returned item is received and inspected. Our quality control team will issue a written inspection report within 3–5 business days. Approved refunds will be issued through the original payment method.
Return Policy
Customers are responsible for return shipping costs unless the return is due to a confirmed factory defect.
In cases where a full refund is approved, we will cover the return shipping cost and include it in the refund process. All other returns are handled at the customer’s expense, and products must be returned in their original condition and packaging.
- Ask a Question
The HH SCIENCE HH5200i conductivity electrode is a compact and intelligent two-electrode digital sensor that integrates a microprocessor directly into the electrode body, allowing it to output RS485 Modbus signals without requiring an external transmitter. This simplifies system wiring, reduces installation footprint, and enables seamless integration into digital process control systems and PLC/SCADA platforms.
The sensing interface utilizes a graphite electrode, offering excellent acid and alkali corrosion resistance, as well as long-term stability in challenging environments. The sensor supports a wide conductivity measurement range—greatly exceeding that of typical stainless steel two-electrode designs—and eliminates the need to select or configure multiple cell constants, making it a true plug-and-play solution.
Built with an IP68-rated enclosure and G3/4 process thread, the HH5200i is designed for easy inline or submersible mounting, suitable for field applications such as surface water, aquaculture systems, wastewater treatment, and industrial process control.
Key Features
- Extended Conductivity Measurement Range: Covers a broader range than traditional stainless steel two-electrode sensors, suitable for diverse water types and chemical media.
- Integrated RS485 Output: Built-in digital transmitter enables direct Modbus communication for real-time monitoring and process automation.
- Graphite Electrode Design: Offers outstanding corrosion resistance to acids, alkalis, and brine environments, with long-term stability and durability.
- Universal Measurement—No Cell Constant Selection: One sensor fits all conductivity scenarios without the complexity of K-value management.
- IP68 Waterproof Enclosure: Suitable for continuous submersion in tanks, wells, or open channel installations.
- G3/4 Process Thread: Standardized connection allows for easy inline installation or pipe-mounting.
- High Accuracy & Fast Response: Rapid, reliable conductivity feedback suitable for dynamic flow or high-frequency monitoring environments.
Optional Upgrades
- Low-Power Version Available: Ideal for solar-powered or battery-operated systems.
- Flexible Installation Configurations: Compatible with both inline pipeline and submersible mounting options.
- Extended Cable Options: Cable length can be extended up to 100 meters to support large-scale or remote systems.
Typical Applications
- Surface Water Quality Monitoring
- Municipal and Industrial Wastewater Treatment
- Seawater Conductivity Tracking
- Agricultural Irrigation and Aquaculture Systems
- General Industrial Process Monitoring and Control
| Measurement Range | 0~70 ms/cm |
| Measurement Accuracy | ±2% |
| Temperature Range | -20~60℃ |
| Pressure Range | 0~6Bar |
| Temperature Compensation Type | NTC22K |
| Data Compensation | Default 25℃ compensation, 2%/℃ |
| Response Time | <10S |
| Sensor Lifetime | 2–3 years |
| Mounting Thread | G3/4 |
| Housing Material | POM |
| Length | 189mm |
| Cable Connection | Integrated direct connection |
| Power Supply | 6–30VDC |
| Communication Protocol | MODBUS RTU via RS485 |

| Weight | 0.3 kg |
|---|---|
| Dimensions | 20 × 6 × 6 cm |
| Measurement | Conductivity |
| Temperature Compensation Options | NTC 2.252K, NTC 5K, NTC 10K, NTC 22K, NTC 30K, PT100, PT1000 |
| Parameters | Conductivity |
| Cable Connection | 4 PIN, Integrated direct-connection cable, K2, K8S, K9, S7, S8, S8M, VP, VP4 |
Related Products
The HH SCIENCE HH1000P is a cost-effective pH electrode optimized for low-conductivity clean water applications, offering fast response, high accuracy, and long-term signal stability.
Key Features:
- Ideal for 20–300 μS/cm conductivity range
- IP68 waterproof for submersible use
- Long-path reference system ensures signal reliability
- Low-impedance pH membrane for fast, accurate readings
- Dual 3/4″ NPT threads for easy inline or submersible installation
The HH SCIENCE HH2800 is a high-temperature pH electrode built for chemical, biopharmaceutical, and industrial processes up to 150°C, featuring a specialized HT membrane and synthetic gel system designed for sterilization, pressure, and chemical resistance.
Key Features:
- Withstands temperatures up to 150°C
- Dual-junction design resists contamination
- Reinforced HT membrane for thermal and mechanical shock
- IP68-rated for immersion and pressurized systems
- Compatible with CIP/SIP and autoclave sterilization
The HH SCIENCE HH2500P is a precision-engineered pH electrode optimized for clean and pure water applications, featuring a low-impedance cylindrical membrane and dual-junction design for high measurement accuracy, rapid response, and mechanical durability.
Key Features:
- Designed for 20–300 μS/cm conductivity range
- Dual-junction reference system for extended lifespan
- IP68-rated for continuous submersion
- Low-impedance membrane for fast and accurate readings
- Durable cylindrical membrane resists mechanical stress
The HH SCIENCE HH6000 is a maintenance-free dissolved oxygen electrode with solidified gel electrolyte and full stainless steel housing, designed for long-term operation in wastewater, aquaculture, and municipal systems without the need for membrane or electrolyte replacement.
Key Features:
- Maintenance-free solidified gel electrolyte
- Mesh membrane design resists air bubble impact
- Fully stainless steel construction for durability
- IP68 waterproof rating for continuous submersion
- Acid and alkali corrosion resistance
- PG13.5 threaded for easy process installation


