AquaSense-BGA

Modulated phycocyanin / phycoerythrin fluorometer for cyanobacteria early warning, with coherent detection, self-cleaning option, and RS485 / Modbus output.

AquaSense-BGA is the cyanobacteria-channel sibling of AquaSense-Chl. It uses the same modulated excitation and coherent detection technology, tuned to the phycocyanin (freshwater BGA) or phycoerythrin (marine BGA) fluorescence band, for sensitive, drift-resistant early warning of harmful algal blooms.

AquaSense-BGA blue-green algae fluorometer

Phycocyanin / Phycoerythrin

Configurable for freshwater (PC) or marine (PE) cyanobacteria.

Modulated Detection

Modulated excitation with coherent detection rejects ambient light.

Self-Cleaning Option

Wiper accessory prevents long-term biofouling.

Early-Warning Ready

Sensitive optics for harmful algal-bloom monitoring programs.

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-BGA is an optical blue-green algae (cyanobacteria) fluorometer that uses modulated excitation and coherent detection to lift sensitivity and reject ambient light interference. The reagent-free optical method avoids consumables and chemical waste, and the optional self-cleaning brush keeps the optical window free of biofilm for long-duration deployments.

The sensor is factory-configurable for the phycocyanin (PC) channel for freshwater cyanobacteria monitoring, or the phycoerythrin (PE) channel for marine cyanobacteria. The RS485 / Modbus RTU interface integrates directly into AquaSense-Multi sondes and observation buoys for early-warning algal-bloom programs.

Product Image

AquaSense-BGA blue-green algae fluorometer
Primary view of the AquaSense-BGA optical blue-green algae (cyanobacteria) fluorometer.

Key Specifications

Parameter
Value
Measurement Principle
Modulated fluorescence with coherent detection
Reagent-free
Excitation Wavelength
590 nm (PC) / 525 nm (PE)
Selectable on order
Emission Wavelength
650 nm (PC) / 575 nm (PE)
Cyanobacteria emission band
BGA Range (PC)
0 to 100,000 cells/mL or 0-400 ppb
Selectable sub-ranges
BGA Range (PE)
0 to 750,000 cells/mL
Marine channel
Resolution
1 cell/mL / 0.01 ppb
Output resolution
Accuracy
±5% of reading
After calibration
Cleaning
Optional self-cleaning brush
Anti-biofouling
Temperature Range
0 to 45 °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
View Full Specifications

Supported Parameters

Measured Parameters

Blue-Green Algae (cells/mL or ppb) Water Temperature

Output Options

RS485 Modbus RTU

Power Options

DC 9-24 V

Environmental

0-45 °C IP68 Submersible Self-cleaning option

Resources

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.

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.

Ready to add reliable water-quality data?

Let's match the right probe, calibration plan, and integration to your monitoring program.

Get in Touch

Trusted by Experts

Used by researchers, engineers, and operators worldwide.

Built for Water

Designed for reliable freshwater, brackish, and marine service.

End-to-End Solutions

Sensors, platforms, systems, and software working together.

Global Support

Local teams and partners ready to help deploy and scale.