The SNiP-pHR is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time pH, Redox and temperature measurements for continuous water quality monitoring.
The pHEHT sensor has been designed to perform under hard conditions, from pure mountain water with conductivity as low as 20 μS/cm, lakes and rivers (100 – 2000 μS/cm), seawater with conductivities of 50 mS/cm, to wastewater with conductivity higher than 200 mS/cm.
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:||Combined electrode (pH/ref): special glass, Ag/AgCI ref. Gelled electrolyte (KCI)|
|Range:||0 – 14 pH|
|Accuracy:||± 0.1 pH|
|Measurement Principle:||Combined electrode (Redox/reference): Platinum tip, Ag/AgCI AgAgCl. Gelled reference (KCI)|
|Range:||-1000 to +1000 mV|
|Accuracy:||± 2 mV|
|Range:||0°C to 50°C|
|Response Time:||< 5 s|
|Interface:||Modbus RS-485 standard; SDI-12 optional|
|Power supply:||5 to 12 volts|
|Current Draw:||Standby: 25μA
Average RS485 (1 Hz): 3.9 mA
Average SDI12 (1 Hz): 6.8 mA
Current pulse: 500 mA
|Storage Temperature:||0°C to 60°C|
|Dimensions:||Diameter: 27/21mm; Length: 207mm|
|Weight:||350g (sensor and 3m cable)|
|Material:||PVC, DELRIN, special pH glass, platinum, polyamide|
|Maximum Pressure:||5 bar|
|Cable:||Coaxial armoured, Polyurethane, bare wire or Fischer connector|