AS-NUTRI-4N In-Situ Nutrient Analyzer

Low-power in-situ wet-chemistry analyzer for nitrate, nitrite, phosphate, and ammonia on a single instrument.

Output & Integration

RS232 RS485 Modbus

Overview

The AquaSense AS-NUTRI-4N is a low-power, in-situ wet-chemistry nutrient analyzer that measures nitrate, nitrite, phosphate, and ammonia on a single instrument. Designed for solar-powered buoys, coastal stations, and groundwater applications, it covers the standard 3N1P nutrient package needed for environmental and aquaculture monitoring projects.

Catalog Position

Series: AquaSense

Layer: Sensors

Key Features

Four nutrient channels on one instrument: NO₃-N, NO₂-N, PO₄-P, NH₃-N
Low-power design suitable for solar-powered buoys
0–1 mg/L base range, extendable on request
Resolution 0.001 mg/L on all channels
Detection limits down to 2 µg/L (nitrite) and 5 µg/L (nitrate / phosphate / ammonia)
RS232 / Modbus RS485 for remote software control

Applications

Coastal and estuary nutrient monitoring Aquaculture water quality monitoring Drinking water source and groundwater monitoring Eutrophication and harmful algal bloom early warning Environmental compliance monitoring

Technical Specifications

Series	AquaSense
Layer	Sensor Layer
Product Family	Water Quality Sensors
Integration	RS232, RS485, Modbus
Channels	Nitrate, nitrite, phosphate, ammonia
Measurement range	0–1 mg/L per channel (extendable)
Repeatability	≤ 10 % on all channels
Resolution	0.001 mg/L
Cycle time	Nitrate 15 min, Nitrite 10 min, Phosphate 5 min, Ammonia 15 min
Detection limit	Nitrate ≤ 5 µg/L, Nitrite ≤ 2 µg/L, Phosphate ≤ 5 µg/L, Ammonia ≤ 5 µg/L
Zero drift	≤ 2.0 % FS (nitrate, ammonia); ±3 % FS (nitrite); ±4 % FS (phosphate)
Span drift	≤ 3.0 % FS (nitrate, ammonia); ±8 % FS (nitrite, phosphate)
Reagent storage	10–30 °C
Ambient temperature	−5 to 40 °C
Communication	RS232 / Modbus RS485
Power	DC 12 V ±0.5 V
Weight	Approx. 12 kg
Dimensions	Ø225 mm × 638 mm

Output & Integration

Zenocean products are specified for integration with marine stations, buoy telemetry, PLC cabinets, environmental monitoring networks, and cloud-connected data platforms.

Support for RS485, Modbus, NMEA, and system-specific protocols.
Optional power and signal configurations based on project architecture.
Mechanical and electrical coordination for outdoor and marine deployments.

FAQ

Can Zenocean products be integrated with third-party monitoring platforms?

Yes. Many Zenocean products are offered with RS485, Modbus, NMEA, or project-specific communication options, making them suitable for integration into third-party acquisition and software environments.

Can you help recommend a sensor model based on the application?

Yes. Buyers can share the application, required parameters, output signal, environment, quantity, and installation conditions, and Zenocean can recommend suitable models or a system configuration.

Are documents available for export and project quotation?

Yes. Product catalogs, datasheets, communication guidance, and selection support can be prepared for export-oriented B2B discussions and project submissions.

Cross Selection