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WHORP-768 Digital ORP Sensor | Industrial-Grade Redox Potential Monitoring

iunie 16, 2025
Produse, Analizor de apă

Precision ORP Measurement Built for Harsh Environments, MODBUS RTU ORP Sensor for Wastewater Treatment & More

Leveraging the Nernst equation principle, the WHORP-768 Digital ORP Sensor delivers reliable real-time oxidation-reduction potential (ORP) monitoring.

With a ±1mV measurement accuracy,

IP68 waterproof rating,

and MODBUS RS485 integration,

this sensor is engineered for demanding applications in wastewater treatment,

aquaculture, chemical processing, and environmental monitoring.

Core Features for Industrial Reliability

  1. Wide Measurement Range
  • Monitors ORP from -1000 to 1000mV, ideal for tracking redox reactions in diverse solutions.
  • Measures temperature from 0–80℃ with ±5℃ accuracy for comprehensive environmental data.
  1. Rugged & Submersible Design
  • IP68/NEMA 6P rating supports continuous submersion (1m depth) in corrosive or high-moisture environments.
  • PP body and 10m PVC cable resist chemical corrosion and mechanical stress.
  1. Plug-and-Play Connectivity
  • MODBUS RTU (RS485) protocol enables seamless integration with PLCs, SCADA systems, and IoT platforms.
  • 9–36VDC wide voltage compatibility reduces installation complexity.

Technical Specifications

ParameterValue
Raza de masurareORP: -1000–1000mV • Temperature 0–80℃
Precizie±1mV (ORP) • ±0.5℃ (Temperature)
Alimentare electrică  9–36VDC
Output ProtocolMODBUS RTU (RS485)
 MaterialBody: PP • Cable: PVC (10m standard)
Dimensiuni Φ30mm x 160mm
Greutate0.6kg (with cable)
Waterproof Rating IP68
Pressure Rating≤0.6MPa (suitable for pipeline installations)
Storage Temperature0–45℃ (dry environment)

Applications

Trusted in industries requiring precise redox potential control:

Wastewater Treatment：Monitor disinfection efficiency (e.g., chlorine dosage) in sewage plants.

In wastewater treatment plants, the WHORP – 768 MODBUS RTU ORP sensor plays a crucial role in monitoring disinfection efficiency. It accurately measures ORP levels, enabling precise control of chlorine dosage, which is essential for maintaining water quality standards.

Aquaculture：Optimize water quality by tracking ORP levels in fish/shrimp tanks to prevent hypoxia.

The WHORP – 768, with its IP68 submersible design, is a game – changer for aquaculture. It withstands harsh aquatic environments, allowing for continuous and reliable monitoring of ORP levels in fish and shrimp tanks. This helps aquaculturists optimize water quality, reducing the incidence of diseases by up to 30%.

Chemical Processing：Ensure reaction consistency in pharmaceutical and food manufacturing.

A pharmaceutical company successfully implemented the WHORP – 768 in their reactors. By precisely controlling the redox potential with this pharmaceutical reactor redox monitoring sensor, they achieved a 25% reduction in batch failures and optimized API yield.

Installation Guide  ：Physical Installation

Installation in Reactors, Storage Tanks, Pipelines, or Flow Systems – Ensure Full Immersion of the Electrode

Note: Before use, remove the acrylic protective cap by unscrewing it to enable measurement.

Calibration Procedure

  1. Pre-Calibration Prep：
  • Clean the sensor bulb with 0.1N HCl and rinse with deionized water.
  • Immerse in a 235mV standard solution (e.g., potassium ferricyanide) until readings stabilize.
  1. MODBUS Calibration：
  • Use function code **06** in your monitoring software.
  • Enter **Address: 5** and **Value: 2350** (235mV × 10 for millivolt precision).
  • Confirm "Response OK" to save settings.
  1. Factory Reset (if needed)：
  • InputAddress: 200 and Value: 1 via MODBUS to restore default parameters.

Maintenance & Care

  • Routine Cleaning
  • Soak the glass bulb in 0.1N HCl for 10–15 minutes to remove mineral deposits.
  • Wipe the metal junction with a soft brush if oxidized (avoid sandpaper on glass).
  • Proper Storage
  • Store in a 3.3M KCl solution or protective cap filled with electrolyte.
  • Never leave in protein-rich liquids (e.g., wastewater sludge).
  • Connection Checks
  • Clean terminal blocks with isopropyl alcohol if contaminated.
  • Ensure cable connections are dry to prevent short circuits.
  • Replacement Signals
  • Replace if calibration fails after cleaning or if the glass membrane becomes opaque.

Why Choose the CS2700 Series? 

  • Industry-Leading Accuracy：±1mV precision for critical redox process control.
  • Durable Construction：IP68 rating and chemical-resistant materials for 24/7 operation in harsh environments.
  • Easy Integration：MODBUS RS485 compatibility with no additional converters required.
  • Low Maintenance：Calibrate monthly (or as needed) to minimize downtime.

 

Request a Custom Quote

→ Get pricing for the WHORP-768 or explore our bundle deals for complete monitoring systems.

 

FAQs  

Q：How often should I calibrate the ORP sensor?

A：Calibrate every 2–4 weeks for industrial use; monthly checks are sufficient in stable environments.

 

Q：Can the sensor cable be extended beyond 10m?

A：Yes, use shielded RS485 cable up to 1000m. Ensure proper grounding to maintain signal integrity.

 

Q：What should I do if the sensor shows unstable readings?

A：First, clean the bulb with 0.1N HCl and re-calibrate. If issues persist, restore factory settings or contact support.

 

Q：Is the sensor compatible with saltwater aquaculture?

A：Yes, the IP68-rated design and chemical-resistant materials make it suitable for marine environments.

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