The SNiP-PFR is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time measurements for continuous plant, light and environmental monitoring.
The S2-441 PAR-FAR Sensor is a digital sensor with SDI-12 communication protocol. Typical applications of PAR-FAR sensors include monitoring plant light environments, researching plant morphogenic activity, and photobiology studies.
Further parameters can be added to the SNiP, without requiring loggers to match each distinct sensor, substantially reducing the cost of getting a fuller picture on the application. The S-NODE can support 3x additional SDI-12 sensors to the base package; see other IoT Nodes to include further sensor extensions in a custom Sensor-Node IoT Package.
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.
The sensor features a rugged, aluminium housing that is fully-submersible and built to withstand harsh conditions. The sensor cable includes an IP68 marine-grade stainless-steel cable connector to simplify sensor removal and replacement from permanent installations for maintenance and calibration.
|Measurement Repeatability||less than 1%|
|Long-term Drift||less than 2% per year|
|Non-linearity||Less than 1 % (up to 4000 µmol m⁻² s⁻¹) (PAR); Less than 1 % (up to 1000 µmol m⁻² s⁻¹) (Far-Red)|
|Response Time||less than 0.6 s|
|Field of View||180°|
|Spectral Range||389 to 692 nm ± 5 nm (PAR); 702 to 761 nm ± 5 (Far-Red)|
|Directional (Cosine) Response||± 2 % at 45˚; ± 5 % at 75˚ zenith angle|
|Temperature Response||Less than 0.1 % per C|
|Operating Environment||-40 to 70 C; 0 to 100 % relative humidity|
|Dimensions||30.5 mm diameter, 36.6 mm height|
|Cable||5 m of shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires; stainless steel (316), M8 connector|
4 years against defects in materials and workmanship