1. High-Precision Online Salinity Sensor Ocean Buoy Station Coastal Seawater Salinity Real-Time Acquisition Sensor - AMT/DDL-300
Conductivity range: 0-5000uS/m, 0-100000uS/em (graphite four-electrode conductivity
Resolution: 0.001mS/em
Basic error: +2%F.S
Temperature: -10-150°C
Temperature error: ±0.3°C
Automatic or manual temperature compensation range
Temperature compensation: 0～60°C
Communication output: RS485 Modbus RTU
Power supply: 9～28VDC, power: <0.2W
Product Introduction
Online-salinity-sensor
AMT/DDL-300
70911001
Online salinity sensor
Measurement principle: To avoid electrode polarization, the sensor circuit generates a highly stable sine wave signal applied to the electrodes. The current flowing through the electrodes is proportional to the conductivity of the measured solution. The instrument converts the current into a voltage signal through a high-impedance operational amplifier, then after
After program-controlled signal amplification, phase-sensitive detection, and filtering, a potential signal reflecting conductivity is obtained; the microprocessor alternately samples the temperature signal and conductivity signal through switch switching, and after calculation and temperature compensation, obtains the conductivity of the measured solution at 25°C
value and the temperature value at that time.
Temperature compensation principle: The conductivity of electrolyte solutions is affected by temperature changes and requires temperature compensation. The temperature coefficient of weak aqueous solutions is 2.00%/°C; the higher the concentration, the smaller the temperature coefficient. For lower concentration (1µS·cm－1) solutions
The temperature coefficient does not use 2.00%/°C, but is set by the user, with a range of 0.00～9.99%.
Conductivity range: 0-5000uS/m, 0-100000uS/em (graphite four-electrode conductivity
Resolution: 0.001mS/em
Basic error: +2%F.S
Temperature: -10-150°C
Temperature error: ±0.3°C
Automatic or manual temperature compensation range
Temperature compensation: 0～60°C
Communication output: RS485 Modbus RTU
Power supply: 9～28VDC, power: <0.2W
Main Application Areas
- Ocean Buoy Stations — Real-time salinity measurement in remote ocean buoys for environmental monitoring.
- Coastal Seawater Monitoring — Continuous salinity tracking in coastal waters for ecosystem health assessment.
- Aquaculture — Salinity control in fish farms and hatcheries to maintain optimal aquatic conditions.
- Industrial Water Treatment — Monitoring salinity in industrial processes and wastewater treatment.
- Environmental Research — Data collection for oceanographic and climate change studies.
Keywords：online salinity sensor, seawater salinity sensor, conductivity sensor, ocean buoy sensor, salinity meter, RS485 salinity sensor, high precision salinity sensor, real-time salinity monitoring
