The Meter HYDROS 21 sensor is a low cost, accurate tool for monitoring of water level, electrical conductivity, and temperature in both ground water and surface water. The sensor utilises a vented pressure transducer to obtain accurate water level measurements from 0 to 10m while removing the effects of barometric pressure. With a range of 0 to 120 dS/m, the HYDROS 21 sensor has the ability to make accurate electrical conductivity measurements in a broad range of applications.
Utilising the HYDROS-21 Sensor in a custom IoT (Internet of Things)
The SNiP-HPT is a ‘Sensor Node Integrated Package’ for LoRaWAN or CAT-M1 communication of real-time water levels, electrical conductivity and temperature measurements for continuous water quality monitoring.
The HYDROS 21 sensor is a robust, marine grade sensor, 3.4 cm in diameter. It connects by cable to an external datalogger. Much of the complex circuitry is in the data logger, lowering the cost of individual sensors without impacting their accuracy or resolution. This makes it so that instead having to rely on a single measurement, you can measure in several different locations without exceeding your budget.
The HYDROS 21 is compatible with all Meter/Decagon Em50 series and Campbell Scientific data loggers. The Em50G offers a remote transmission option to deliver data wirelessly to your desktop. With this option, water depth, temperature, and electrical conductivity can be monitored from any internet-connected computer in near-real time.
|RANGE:||Water Depth: 0 to 10 m
Electrical Conductivity: 0 to 120 dS/m
Temperature: -11 to 49°C
|RESOLUTION:||Water Depth: 2 mm
Electrical Conductivity: 0.001 dS/mT
|ACCURACY:||Water Depth: ± 0.05% of full scale @ 20°C
Electrical Conductivity: ± 0.01 dS/m or ± 10% (whichever is greater)
Temperature: ± 1°C
|OPERATING TEMPERATURE:||0 to 50°C (Pressure transducer cannot be allowed to freeze while submersed.)|
|POWER REQUIREMENTS:||3.6 – 15 VDC, 0.03 mA quiescent, 0.5 mA during 300 ms measurement|
|DIMENSIONS:||3.4 cm Diameter, 9 cm length (housing)|
|MEASUREMENT TIME:||300 ms (milliseconds)|
|OUTPUT:||Serial TTL, 3.6 Volts Levels or SDI-12|
|CONNECTOR TYPES:||3.5 mm (stereo) plug, or stripped & tinned lead wires (3)|
|CABLE LENGTH:||10 m standard; custom lengths available upon request|
|DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE):||Meter/Decagon Em50 Series, ProCheck, Campbell Scientific|
|SOFTWARE COMPATIBILITY:||ECH2O Utility (rev 1.64+), DataTrac3 (rev 3.4+)|