In-Situ Nutrient Sensor

Short Description:

Frankstar in-situ nutrient sensor adapts established wet-chemistry methods into a fully automated, in-situ nutrient analyzer. The instrument strictly follows national standard detection protocols and accurately replicates manual laboratory procedures. Using precise reagent handling and automated reaction control, a single In-Situ Nutrient Sensor can simultaneously and continuously measure up to five key nutrients: nitrite (NO₂-N), nitrate (NO₃-N), phosphate (PO₄-P), ammonia nitrogen (NH₄-N), and silicate (SiO₃-Si).

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Key Features

Feauturing flexible deployment, the system supports buoy-mounted, fixed-platform, and shipboard installations, enabling reliable long-term online monitoring.

Applications

In-Situ Nutrient Sensor is widely used for marine ecology and aquaculture, environmental monitoring, eutrophication assessment, and studies of phytoplankton dynamics and nutrient cycling.

Technical Specifications

Dimension	ø225×855 mm
Battery Pack	88 x 14 cm
Weight	19.5 kg
Measurement Time	56 min (5 parameters)
Water Consumption for Cleaning	18.4 mL/cycle (5 parameters)
Data Transmission	RS485
Power Supply	12 V
Power Consumption	Working Power 6.77 W, Standby Power 3.70 W
Debugging Equipment	Handheld Terminal
Battery Life	4-8 Weeks, Depends on Sampling Interval (calculated according to the reagent, up to 240 times)
Method	NO₂-N: NEDD Colorimetric Method NO₃-N: Cadmium Ring Reduction Method PO₄-P: Phosphombohedral Bluecolorimetric Method NH₄-N: Salicylic Acid Colorimetric Method SiO₃-Si: Silicon Molybdenum Bluecolorimetric Method
Range	NO₂-N: 0-1.0 mg/L NO₃-N: 0-5.0 mg/L PO₄-P: 0-0.8 mg/L NH₄-N: 0-4.0 mg/L SiO₃-Si: 0-6.0 mg/L
Detection Limit	NO₂-N: 0.001 mg/L NO₃-N: 0.001 mg/L PO₄-P: 0.002 mg/L NH₄-N: 0.003 mg/L SiO₃-Si: 0.003 mg/L