AquaSense-NO3
Reagent-free ion-selective sensor configurable for nitrate (NO3-), and on order also NH4+, K+, Ca2+, and other ions, with RS485 / Modbus output for environmental monitoring.
AquaSense-NO3 is the ion-selective electrode (ISE) version of the AquaSense family. It is factory-configurable for nitrate as the default channel — and, on order, for ammonium (NH4+), potassium (K+), calcium (Ca2+), and other common environmental ions — making it a flexible reagent-free tool for nutrient and ion monitoring.
Multi-Ion Capable
Configurable for NO3-, NH4+, K+, Ca2+ and similar ions on order.
Reagent-Free
ISE measurement avoids consumables and chemical waste.
Custom Calibration
Supports user-defined standards with forward / reverse curve.
Direct Immersion
Submersible body for in-situ deployment in tanks and natural water.
Industrial Electrode
Long-life industrial-grade electrode for continuous online operation.
Temperature Compensation
Built-in NTC temperature sensor with automatic compensation.
RS485 + Modbus
Digital RS485 output with Modbus RTU protocol for networked deployments.
Isolated Power
Isolated power-supply design improves data stability and noise immunity.
Direct-Immersion
Submersible body for direct insertion into pipes, tanks, and natural water.
Low Maintenance
Stable electrochemistry with simple field calibration workflow.
Overview
AquaSense-NO3 is the ion-selective version of the AquaSense water-quality family. With nitrate (NO3-) as the default channel, it can also be ordered with NH4+, K+, Ca2+, and other common environmental ion-selective membranes — making it a flexible single-platform tool for surface water, drinking water, and wastewater monitoring. The reagent-free design avoids consumables and chemical waste.
The sensor supports custom calibration with user-supplied standard solutions and can be configured with either forward or reverse calibration curves. An isolated power-supply architecture provides strong data stability, and the RS485 / Modbus RTU interface integrates directly into existing telemetry and SCADA systems.
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Key Specifications
View Full SpecificationsSupported Parameters
Measured Parameters
Output Options
Power Options
Environmental
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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Designed for reliable freshwater, brackish, and marine service.
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