SNiP-PFR
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 SNiP-PFR
The base SNiP-PFR integrates 1x S-NODE and 1x S2-441 PAR-FAR Sensor (from the Apogee SI-400 Series) to a site’s unique network, communication and power requirements.
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.
See Further Specifications on the S-NODE
See Further Specifications on the S2-441 PAR-FAR Sensor
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.
S-NODE
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.
- LoRaWAN™ low-power long-range connectivity
- Supports the full range of SDI-12 commands, and sensors requiring constant excitation.
- Optional CAT-M1
- Solar rechargeable Lithium-ion or external 12V power options
- Optional Multi-constellation GNSS
- AS923, AU915 and US915 available, with other region plans available upon request.
- Standard IP65 enclosure, optional IP67
S2-441 Light Sensor
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.
| Calibration Uncertainty | ±5% |
| 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 |
| Mass | 51 g |
| 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 |
| Warranty |
4 years against defects in materials and workmanship
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