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WQA-164

UV254 Online COD Sensor

Reagent-free UV254 sensor that measures COD and turbidity in about a second, with dual-beam compensation for colour and turbidity.

CODUV254Reagent-freeTurbidity compensationRS485Modbus RTUIP68316L
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WQA-164 UV254 Online COD Sensor
Water Quality Monitoring
Family
WQA Series
Category
Water Quality Monitoring
COD range
0 to 1000 mg/L
Principle
UV254 absorption, dual beam

01Overview

Engineered for the field

A reagent-free COD sensor that uses UV254 absorption to track organic load continuously, with no sample pre-treatment and each measurement completed in about one second. A dual-beam optical design compensates for colour and turbidity so COD readings stay accurate in real wastewater, and the sensor reports turbidity alongside COD. It covers 0 to 1000 mg/L COD with ±2% or ±2.5 mg/L accuracy, and 0 to 500 NTU turbidity. A long-life, low-power light source, an external cleaning system and built-in self-diagnostics keep maintenance to a minimum, while the 316L stainless steel, IP68 body installs at depths up to 10 m and communicates over RS485 Modbus RTU.

02Key Features

What makes the WQA-164 different

01

No reagents

UV254 absorption measures organic load without chemicals or sample pre-treatment.

02

One-second measurement

Each reading completes in about a second for real-time process tracking.

03

Dual-beam compensation

Corrects for colour and turbidity so COD stays accurate in real wastewater.

04

Low maintenance

Long-life light source and an external cleaning system reduce service visits.

05

Self-diagnostics

Built-in fault detection flags issues before they affect data quality.

03Technical Specifications

Detailed specifications

Overview

COD range
0 to 1000 mg/L
Principle
UV254 absorption, dual beam
Output
RS485, Modbus RTU
Protection
IP68

Measurement

COD resolution
0.1 mg/L
COD accuracy
±2% of reading or ±2.5 mg/L, whichever is greater
Turbidity range
0 to 500 NTU
Turbidity resolution
0.5 NTU
Turbidity accuracy
±5% or ±2.5 NTU, whichever is greater
Repeatability
±1% (COD and turbidity)
Response time
Under 1 minute, adjustable

Mechanical

Dimensions
Ø42.5 × 279 mm
Material
316L stainless steel
Cable
10 m shielded as standard, custom lengths available
Max. installation depth
10 m

Power and Environment

Power supply
9 to 28 V DC
Sample temperature
0 to 45 °C, non-freezing
Ambient temperature
-5 to +50 °C

04Applications

Built for these use cases

  • Use case 01

    Wastewater inlet, biological and sedimentation tanks

  • Use case 02

    River, lake and seawater monitoring

  • Use case 03

    Aquaculture water quality

  • Use case 04

    Industrial discharge control

Industries

Deployed across these sectors

ManufacturingUtilitiesEnvironmental Monitoring

05Resources

Datasheets, manuals and technical documents

Documents are shared on request. Tell us which file you need and our team will send it to you.

  • WQA-164 Datasheet

    Datasheet

    Request

  • WQA-164 User Manual

    User Manual

    Request

06Related products

Complementary engineering