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WHEC-768 Digital Conductivity Sensor | Industrial-Grade Water Quality Monitoring

június 16, 2025
Vízelemző

Precision Conductivity Measurement for Industrial Water Systems

Engineered for reliable monitoring of aqueous solutions,

the WHEC-768 Digital Conductivity Sensor delivers real-time measurements of conductivity, TDS,

and temperature. With a ±1%FS accuracy,

IP68 waterproof rating, and MODBUS RS485 integration,

this sensor is ideal for power plants, chemical processing,

water treatment, and industrial applications requiring precise water quality control.

Core Features

  1. Wide Measurement Range
  • Conductivity: 0–30,000µS/cm & 0–500,000µS/cm (dual-range capability)
  • Temperature: 0–50℃ with ±0.5℃ accuracy for comprehensive environmental data
  1. Rugged Submersible Design
  • IP68/NEMA 6P rating supports continuous submersion (1m depth) in harsh environments
  • PP body and 10m PVC cable resist chemical corrosion and mechanical stress
  1. Smart Connectivity  
  • MODBUS RTU (RS485) protocol for seamless integration with PLCs, SCADA, and IoT platforms
  • 9–36VDC wide voltage compatibility for flexible installation

Technical Specifications

ParameterValue
Mérési tartományConductivity: 0–30,000µS/cm • 0–500,000µS/cm • Temperature: 0–50℃
Pontosság±1%FS (conductivity) • ±0.5℃ (temperature)
Tápegység  9–36VDC
Output ProtocolMODBUS RTU (RS485)
 MaterialBody: PP • Cable: PVC (10m standard)
Méretek Φ30mm x 165mm
Súly0.55kg (10m cable incl.)
Waterproof Rating IP68/NEMA 6P
Pressure Rating≤0.3MPa
Storage Temperature0–45℃ (dry environment)
Kalibráció 2-point standard solution calibration (e.g., 84µS/cm, 1413µS/cm)

Applications

1.Marine Desalination  

The WHEC-768 plays a critical role in seawater desalination plants by monitoring conductivity in reverse osmosis (RO) systems. By measuring feedwater conductivity (typically 30,000–50,000µS/cm) and permeate conductivity (<100µS/cm), it ensures optimal RO membrane performance and salt rejection efficiency. Its IP68-rated, chemical-resistant design withstands constant exposure to saline environments, reducing maintenance intervals by 20%.

2.Electronics & Semiconductor Manufacturing

In semiconductor fabrication, ultra-pure water (UPW) with conductivity <0.1µS/cm is essential for cleaning wafers and manufacturing microchips. The WHEC-768 integrates with electrodeionization (EDI) systems to continuously monitor ion exchange processes, ensuring UPW purity and preventing contaminants that could cause chip defects. Its MODBUS RTU compatibility enables real-time data integration with factory automation systems.

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3.Hospital Water Systems

The WHCOND-768 monitors hospital water systems in real time, detecting conductivity changes to ensure water quality and prevent contamination risks.

Installation Guide：

Mounting Requirements：

  • Install vertically with at least 5cm clearance from the tank/bowl bottom to avoid sediment interference
  • Use a bypass line for high-flow systems to ensure stable flow rate (250–500 mL/min)
  • Cable Management：Separate RS485 cables from power lines; extend up to 1000m with shielded cable

 

Calibration Procedure：On-Site Calibration

  1. Prepare Standard Solutions：Use 84µS/cm (low range) or 1413µS/cm (high range) calibration fluids
  2. MODBUS Calibration Steps：  

- Immerse sensor in solution until readings stabilize

- Use function code **06** to input address **12** with calibration value (e.g., 1413 for 1413µS/cm)

- Confirm "Response OK" to save settings

  1. Two-Point Calibration(for high accuracy):

- 1st point: Address 24 for low-range calibration (e.g., 84µS/cm → input 8)

- 2nd point: Address 25 for high-range calibration (e.g., 12.88mS/cm → input 1288)

 

Maintenance & Care

  • Routine Cleaning：

- Wash with 50% warm detergent and nylon brush to remove organic deposits

- For stubborn scales, soak in 2% HCl solution (avoid platinum electrodes)

Platinum Electrode Care：  

- Gently rinse with DI water; never scrub with brushes

Storage：

- Keep in dry environment or store in 3.3M KCl solution (for long-term storage)

Connection Checks：

- Ensure terminals are dry; clean with isopropyl alcohol if contaminated

 

Why Choose WHCOND-768?

  • Dual-Range Versatility：Switch between low/high conductivity ranges for diverse applications
  • Industrial-Grade Durability：IP68 rating and chemical-resistant materials for 24/7 operation
  • Plug-and-Play Integration：MODBUS RS485 for quick setup with existing monitoring systems
  • Cost-Effective Maintenance：Annual calibration and minimal cleaning reduce operational costs

 

  • Optimize Your Water Quality Monitoring

→ Get a tailored solution for your conductivity monitoring needs – contact our team today!

 

  • FAQs

Q：What is the recommended calibration frequency?

A：Calibrate monthly for industrial use; quarterly checks are sufficient in stable environments.

 

Q：Can the sensor measure TDS?

A：Yes, TDS can be derived from conductivity readings using a conversion factor (configurable via MODBUS).

 

Q：Is the sensor compatible with high-salinity water?

A：Yes, the 0–500,000µS/cm range supports high-conductivity solutions like seawater and brine.

 

Q：How to troubleshoot unstable readings?

A：Clean the electrodes with detergent, re-calibrate, and check for cable interference or improper grounding.

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