AquaSense-Sal
Four-electrode salinity, conductivity, and TDS sensor with wide dynamic range, low-polarisation cell, and RS485 / Modbus output for marine and brackish-water monitoring.
AquaSense-Sal uses an international-grade four-electrode technique to deliver higher accuracy, wider measurement range, and stronger stability than traditional two-electrode designs. The four-electrode cell resolves the polarisation issues seen at high conductivities and reduces reading errors caused by electrode fouling.
Four-Electrode Cell
Resolves high-conductivity polarisation issues seen with two-electrode probes.
Fouling-Tolerant
Four-electrode geometry maintains accuracy as electrodes age.
Wide Range
Covers fresh water through brackish water and seawater.
RS485 + Modbus
Digital RS485 output with Modbus RTU for direct system integration.
Corrosion-Resistant
Graphite or four-electrode head resists fouling and aggressive water.
RS485 + Modbus
Digital RS485 output with Modbus RTU protocol for system integration.
Temperature Compensation
Built-in high-accuracy NTC temperature sensor.
Isolated Power
Isolated supply for stable readings in noisy electrical environments.
Continuous Monitoring
Suited to long-term online installation.
Wide Range
Covers fresh water through brackish water and brine, depending on model.
Overview
AquaSense-Sal is a four-electrode salinity / conductivity / TDS sensor built on the international-standard four-electrode measurement technique. Compared to traditional two-electrode probes, the four-electrode cell provides higher accuracy, a wider operating range, and stronger long-term stability — and it is designed to address two key weaknesses of two-electrode designs: polarisation at high conductivity, and reading errors caused by electrode fouling.
The sensor outputs RS485 with the Modbus RTU protocol and is built for online deployment on buoys, fixed stations, and process loops. Its wide dynamic range and rugged housing make it a strong fit for marine, brackish, estuarine, and saline-process applications.
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Key Specifications
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Measured Parameters
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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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Trusted by Experts
Used by researchers, engineers, and operators worldwide.
Built for Water
Designed for reliable freshwater, brackish, and marine service.
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