Zenocean

AquaSense-COD

Reagent-free UV-absorption COD sensor that also reports TOC, BOD, turbidity, and temperature, with automatic turbidity compensation and a self-cleaning brush.

AquaSense-COD is a digital RS485 / Modbus RTU sensor that uses UV absorption to deliver continuous COD, TOC, BOD, turbidity, and temperature readings without reagents or consumables. Automatic turbidity compensation, a self-cleaning brush, and immunity to chloride interference give it a reliable, fast-response duty cycle in wastewater and surface-water monitoring.

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AquaSense-COD UV chemical oxygen demand sensor

Reagent-Free UV

UV-absorption measurement without reagents or consumable kits.

Multi-Parameter Output

Simultaneous COD, TOC, BOD, turbidity, and temperature values.

Self-Cleaning Brush

Built-in wiper prevents biofouling for long maintenance intervals.

Chloride-Tolerant

UV optics deliver stable readings without chloride interference.

No Reagents

Reagent-free optical measurement keeps the deployment clean and low-maintenance.

Auto-Cleaning Option

Optional self-cleaning wiper resists biofouling for long-duration service.

Digital Output

RS485 with Modbus RTU protocol for easy logger and PLC integration.

Temperature Compensation

Built-in temperature sensor with automatic compensation.

Continuous Monitoring

Designed for unattended in-line and in-situ deployments.

Stable & Drift-Resistant

Tight optical path and software algorithms minimise long-term drift.

Overview Specifications Parameters Resources Accessories Support

AquaSense-COD Overview

AquaSense-COD is a UV-absorption sensor that reports chemical oxygen demand alongside total organic carbon, biochemical oxygen demand, turbidity, and water temperature on a single RS485 / Modbus RTU interface. The reagent-free optical method eliminates consumables and waste — a real advantage for unattended deployments and long-term programs.

Automatic turbidity compensation, a self-cleaning brush, and chloride-immune optics produce stable readings even in challenging effluent and surface-water samples, with response times of a few tens of seconds. The sensor is well-suited to municipal and industrial wastewater discharge monitoring, environmental compliance, and process-water surveillance.

AquaSense-COD Product Image

AquaSense-COD UV chemical oxygen demand sensor
Primary view of the AquaSense-COD uv cod / toc / bod sensor.

AquaSense-COD Key Specifications

Parameter
Value
Measurement Principle
Dual-wavelength UV absorption
Reagent-free, chloride-tolerant
COD Range
0 to 1000 mg/L (Cr equivalent)
Selectable sub-ranges
TOC Range
0 to 300 mg/L
Co-output
BOD Range
0 to 300 mg/L
Co-output
Turbidity Range
0 to 4000 NTU
Compensation channel
Resolution
0.1 mg/L
Output resolution
Accuracy
±5% of reading
After calibration
Response Time
Tens of seconds (typical)
Fast measurement cycle
Turbidity Compensation
Automatic
On-board algorithm
Cleaning
Self-cleaning brush
Anti-biofouling
Temperature Range
0 to 50 °C
Water temperature
Output
RS485, Modbus RTU
Default digital interface
Power Supply
DC 9-24 V
Low-power operation
Ingress Protection
IP68
Submersible body
Cable Length
10 m standard, customisable
Submersible cable
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AquaSense-COD Supported Parameters

Measured Parameters

COD (mg/L) TOC (mg/L) BOD (mg/L) Turbidity (NTU) Water Temperature

Output Options

RS485 Modbus RTU

Power Options

DC 9-24 V

Environmental

0-50 °C IP68 Submersible Self-cleaning

AquaSense-COD Resources and Downloads

Product Datasheet

Specifications, configurations, and deployment ratings for project planning.

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Integration Guide

Wiring, protocol notes, and mounting guidance for platform integrators.

Email Support

Calibration & Maintenance

Recommended verification, calibration, and servicing workflow.

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AquaSense-COD Accessories

Calibration Solutions

Standard buffer and reference solutions for routine calibration.

Cable & Junction Box

Submersible cabling and weatherproof junction options for field wiring.

Mounting Hardware

Probe guards, flow cells, and pole or buoy mounting adapters.

AquaSense-COD Support and Deployment Guidance

Wiring and protocol assistance for RS485 / Modbus RTU integration.

Integration support for sondes, buoys, fixed stations, and process panels.

Calibration, field-verification, and long-term maintenance planning.

Application support for freshwater, brackish, marine, and industrial deployments.

AquaSense-COD Frequently Asked Questions

What is AquaSense-COD?

AquaSense-COD is reagent-free UV-absorption COD sensor that also reports TOC, BOD, turbidity, and temperature, with automatic turbidity compensation and a self-cleaning brush. AquaSense-COD is a digital RS485 / Modbus RTU sensor that uses UV absorption to deliver continuous COD, TOC, BOD, turbidity, and temperature readings without reagents or consumables. Automatic turbidity compensation, a self-cleaning brush, and immunity to chloride interference give it a reliable, fast-response duty cycle in wastewater and surface-water monitoring.

What parameters does AquaSense-COD support?

AquaSense-COD supports COD (mg/L), TOC (mg/L), BOD (mg/L), Turbidity (NTU), Water Temperature, RS485, Modbus RTU, DC 9-24 V, and other configured parameters.

Where is AquaSense-COD typically used?

AquaSense-COD is typically used for Surface water, groundwater, and reservoir monitoring, Aquaculture farms and hatcheries, Municipal water supply and wastewater treatment, Environmental compliance and pollution control.

What systems work with AquaSense-COD?

AquaSense-COD can be configured with AquaSense-Multi Multi-Parameter Sonde, OceanStations, CoreLink Telemetry and related Zenocean monitoring platforms or telemetry systems.

What support is available for AquaSense-COD?

Zenocean provides configuration, integration, deployment and maintenance guidance for AquaSense-COD projects.

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Used by researchers, engineers, and operators worldwide.

Built for Water

Designed for reliable freshwater, brackish, and marine service.

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Sensors, platforms, systems, and software working together.

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