AquaSense-DO
Fluorescence-lifetime optical dissolved oxygen sensor with long-life sensing cap, no oxygen consumption, and low maintenance for continuous water-quality monitoring.
AquaSense-DO uses fluorescence-lifetime technology, where dissolved oxygen quenches an excited luminophore on the sensor cap. Because the optical method consumes no oxygen, the probe has no flow-rate dependence, requires no warm-up time, and avoids the electrolytes and frequent calibration of traditional membrane-style DO sensors.
Fluorescence Lifetime
No oxygen consumption, no flow-rate restriction, no warm-up required.
Low Maintenance
Reagent-free and electrolyte-free design simplifies long-term deployment.
Stable & Fast
Optimised optical path delivers stable readings with fast response.
RS485 + Modbus
Digital RS485 output with Modbus RTU for direct system integration.
Modulated Fluorescence
Modulated excitation and coherent detection lift sensitivity and rejection.
No Reagents
Reagent-free measurement keeps the unit clean and environmentally friendly.
Self-Cleaning Wiper
Built-in cleaning device protects long-term stability against biofouling.
RS485 + Modbus
Digital RS485 output with Modbus RTU for logger and PLC integration.
Continuous Monitoring
Designed for unattended in-situ deployments on buoys and stations.
Stable & Sensitive
Optimised optics deliver low detection limits with low drift.
Overview
AquaSense-DO is a fluorescence-lifetime optical dissolved oxygen sensor. The method relies on the dynamic quenching of an excited luminophore by oxygen, so the measurement does not consume oxygen and is independent of sample flow rate. The sensor needs no warm-up and no electrolyte, and is designed to deliver accurate, stable, fast, and convenient dissolved-oxygen data with minimal user intervention.
The sensor is offered in multiple configurations to match different deployment scenarios — from clean surface water and aquaculture ponds to municipal and industrial process water — and can be paired with the AquaGo handheld analyzers or integrated into AquaSense-Multi multi-parameter sondes for fixed-station and buoy use.
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Resources
Product Datasheet
Specifications, configurations, and deployment ratings for project planning.
Request PDFIntegration Guide
Wiring, protocol notes, and mounting guidance for platform integrators.
Email SupportCalibration & Maintenance
Recommended verification, calibration, and servicing workflow.
Get ChecklistAccessories
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.
Support
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.
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