The SNiP-SAL2 is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time salinity, conductivity and temperature measurements for continuous water quality monitoring.
The CTZN: Inductive Conductivity has been designed to measure Salinity, Conductivity and Temperature. The sensor is not sensitive to Fouling.
A ring-type coil is excited at fixed intervals and the response is measured by a second coil, which is linked to the excited coil. The connectivity between the coils (determined by the degree of conductivity) takes place via the conducting solution. The CTZN uses low-cost technology that requires little maintenance and no consumables.
The CTZN sensor stores calibration and history data within the sensor. This allows for a plug and play system without the need for re-calibration.
Modbus RS485 and SDI-12 allow the CTZN to connect to a range of dataloggers and monitoring systems.
The S-NODE (for Environmental Monitoring) has been designed to support the broad suite of SDI-12 based environmental sensors. The S-NODE can support sensors with higher power requirements; a solar panel can charge either the internal lithium-ion battery or both the node and sensor can be powered by an external 12V system (e.g. battery or mains source).
A decoder suitable for TTN will be provided based upon sensor configuration.
|Measurement Principle:||Inductive conductivity sensor, temperature regulated|
|0 to 100 ms/cm|
|Temperature Compensation:||Inbuilt NTC or external measurement|
|Accuracy T°C:||± 0.1°C, range 0-40°C|
|Response Time:||90% of the value in less than 30 seconds|
|Signal Interface:||Modbus RS-485 standard; SDI-12 optional|
|Sensor Power Supply:||5 to 30 volts max.|
|Current Draw:||Automatic Standby: < 50 μA, Heating time 100 ms
Average Modbus RS485 – Range 0-100 ms/cm:
• 5V: 31 mA
• 12V: 15.5 mA
• 24V: 11.5 mA
Max. current pulse: 700 mA/2 ms, 350 mA/ 150ms
|Operating Temperature:||0 to 50°C|
|Storage Temperature:||-10°C to +60°C|
|Dimensions:||Diameter: 62.4mm, Length: 196mm|
|Material:||EPDM, PVC, Stainless steel|
|Maximum Pressure:||5 bar|
|Connection:||9 armoured connectors, polyurethane jacket, bare-wires or waterproof Fischer connector|