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High Precision RS485 EC Water Quality Transmitter | 4–20mA Optional

This product is suitable for drinking water, various water supply systems and recirculating aquaculture water. It adopts RS-485 (Modbus RTU protocol) signal output, which can be easily connected with PLC, DCS, industrial control computers, general controllers, paperless recorders, touch screens and other third-party equipment. It adopts 3/4 NPT thread design for submerged installation, which is convenient for installation in pipelines, water tanks and other occasions, with IP68 protection level, and can output conductivity and TDS at the same time.

  • Model No.:

    LW100D-EC(RS485)
  • Use:

    Measure EC of water
  • Power Supply:

    Battery or External DC
  • LoRaWAN Mode:

    OTAA Class A/C
  • Certificates:

    CE,ROHS,FCC,ISO and 11 patents certifications
  • Customized Support:

    OEM, ODM
  • Warranty:

    1 Year
  • Product Detail

High Precision RS485 EC Water Quality Transmitter | 4–20mA Optional



Introducing the ZONEWU Electrical Conductivity (EC) Sensor

Engineered to deliver highly accurate, real-time water quality readings, our sensor safeguards the safety and purity of your water like no ordinary tester can. While basic devices compromise on consistency and precision, our advanced sensing technology ensures unmatched reliability and measurement accuracy, making it ideal for both industrial applications and professional water treatment systems.


Equipped with real-time monitoring and stable RS485 (Modbus RTU) communication, this sensor enables seamless data transmission and easy integration with PLC, DCS, industrial controllers, and other monitoring systems. Whether for drinking water treatment, recirculating aquaculture, water supply systems or other water quality–critical applications, the ZONEWU EC sensor streamlines online monitoring, reduces manual operation, and provides dependable insights for efficient, automated water quality management.



Performance & Quality Assurance

Stable and reliable sensing element ensures long-term stable operation in various water environments.

High accuracy and good repeatability, minimizing measurement drift for consistent data output.

IP68 waterproof and dustproof design, suitable for long-term submerged or outdoor installation.

Industrial-grade RS485 (Modbus RTU) communication, strong anti-interference, stable data transmission.

Strict factory calibration and quality inspection before shipment, ensuring each sensor performs to standard.


Water EC Sensor Specification:


Model

ZW-EC-PR

Shell material

ABS/PC alloy

Principle

electrode method

Range and Resolution

0~5000 μS/cm

(TDS 0-3000 mg/L)

1

Accuracy

± 1.5% of the reading,±0.3℃

Response Time (T90)

<30s

Limit of Detection (LOD)

2uS/cm(depending on the range of vision)

Calibration method

two-point calibration

Cleaning method

/

Temperature compensation

automatic temperature compensation(Pt1000)

Output method

RS-485(Modbus RTU)

Storage temperature

-5~65℃

Working Conditions

0~50℃,≤0.2MPa

Installation method

immersion installation,3/4 NPT

power consumption

0.25W@12V

power supply

12~24V DC

Protection level

IP68

Cable length

5 meters, other lengths available


Packaging:


Single gross weight: 1.200 KG

Single package size: 37x26x5 cm

 


Product Description: 





Application: 


This electrical conductivity sensor is widely applied across numerous waterrelated scenarios to guarantee water safety, stability, and quality. It delivers stable and reliable monitoring for aquaculture systems, marine environmental monitoring, drinking water treatment plants, swimming pool management, river and stream monitoring, wastewater treatment facilities, chemical industrial parks, and farmland irrigation systems. With its high precision and stable performance, it effectively supports realtime water quality control, process optimization, and operational safety in both industrial and civil water management applications.


applications of versatile Residual Chlorine Sensor



Certifications:


  • With over 10 years of professional experience, we are a leading manufacturer and exporter of water quality EC sensors in China.
  • All our EC sensor products are fully certified with CE and RoHS, meeting strict international quality and safety standards.
  • We provide stable, reliable, and high-performance water quality monitoring solutions for global customers.


Production Process:



factory of water ec sensor manufacturer



Why choose us:


1. Strong R & D: 30+ Senior experts and highly educated personnel formed a R & D team, heavy investment, master a number of core technologies and patents.
2. Professional and effective solutions: for smart environmental protection, agriculture and other fields, to provide customized compound networking solutions.
3. Full range of products: covering the whole industry chain products from data collection to platform services to meet diverse needs.
4. Excellent quality: we have perfect quality control system, strictly quality control each production link, low defective rate. 
5. Good service: 7×24 hours fast response, Professional pre-sale, sale, after-sales team support.

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