The SNiP-SPW1 is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time plant diameter measurements in relation to real-time weather parameters and soil water potential for continuous plant monitoring.
The DBS60 Band Dendrometer is an SDI-12 Band Dendrometer designed to measure short- and long-term changes in stem circumference.
The Atmos-14 monitors microclimate and evapotranspiration via the measurement of Relative Humidity, Barometric Pressure, Air Temperature, and Vapor Pressure with or without a passive radiation shield.
The TEROS-21 uses solid ceramics which have a wide range of pore sizes that can typically measure soil water potential of -100kPa and drier. Solid ceramics are suited to general monitoring of soil suction within or under structures of buildings, roadways and mine sites.
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 1x additional SDI-12 sensor to the base 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 DBS60 is an SDI-12 Band Dendrometer designed to measure short- and long-term changes in stem circumference.
The DBS60 SDI-12 Band Dendrometer is similar to the DBL60, but has a cable for the connection to a SDI-12 Data Logger.
Change in Tree Circumference (mm)
|Increment sensors type||
|Range||64 mm of circumference|
2% of full scale
15 to 20 N in the whole range, stem diameter independent
Tape temperature coefficient:
|17.3 x 10-6 per °C|
-30 to 60°C
|– Humidity||0 to 100%|
|Size||100 x 70 x 100 mm|
ca 260 g
Minimal stem diameter
|Tightening strength||15 to 20 N|
(Note: The Decagon VP-4 has been replaced by the Meter ATMOS 14).
|RANGE||0 to 100% RH|
|ACCURACY||Sensor measurement accuracy is variable across a range of temperatures.
Refer to the chart in Figure 1 to determine the accuracy specification for the ATMOS 14 sensor.
|< 40 s (response time in 1 m/s air stream)|
|HYSTERESIS||< 1% RH typical|
|LONG TERM DRIFT||< 0.5% RH/year typical|
|RANGE||-40°C to 80°C|
|ACCURACY||Sensor measurement accuracy is variable across a range of temperatures. Refer to the chart in Figure 2 to determine the accuracy specification for the VP-4 sensor|
|< 400 s (response time in 1 m/s air stream)|
|LONG TERM DRIFT||< 0.04°C / year typical|
|RANGE||0 to 47 kPa|
|ACCURACY||Sensor measurement accuracy is variable across a range of temperatures and RH. Refer to the chart in Figure 3 to determine the accuracy specification for the VP-4 sensor.|
|RANGE||49 to 109 kPa|
|DIMENSIONS||1.96 cm (dia) x 5.4 cm (h)|
|POWER REQUIREMENTS||3.6 to 15 VDC, 0.03 mA quiescent, 4 mA during 300 ms measurement|
|RESPONSE (MEASUREMENT) TIME||300 ms|
|OUTPUT||Decagon Digital or SDI-12|
|OPERATING TEMPERATURE||-40°C to 80°C|
|CONNECTOR TYPES||3.5 mm (stereo) plug or stripped and tinned lead wires (pigtail)|
|CABLE LENGTH||5 m standard; custom cable length available upon request|
|DATA LOGGER COMPATIBILITY
|Meter/Decagon: Em50 Series (Firmware 2.19+)
ICT SDI-12 logger, AML, AWS, Universal Telemetry Hub
Campbell Scientific: Any logger with serial I/O
|HANDHELD READER COMPATIBILITY||ProCheck (rev 1.57+)|
|SOFTWARE COMPATIBILITY||ECH2O Utility (rev 1.74)
DataTrac (rev 3.11+)
|Volumetric water content (VWC)|
|Range:||Mineral soil calibration: 0.00–0.62 m3/m3
Soilless media calibration: 0.0–1.0 m3/m3
Apparent dielectric permittivity (εa): 1 (air) to 80 (water)
NOTE: The VWC range is dependent on the media the sensor is calibrated to. A custom calibration will accommodate the necessary ranges for most substrates.
|Accuracy:||Generic calibration: ±0.03 m3/m3 (±3.00% VWC) typical in mineral soils that have solution EC <8 dS/m
Medium specific calibration: ±0.01–0.02 m3/m3 (±1–2% VWC) in any porous medium
Apparent dielectric permittivity (εa): 1–40 (soil range) , ±1 εa (unitless) 40–80, 15% of measurement
|Dielectric measurement frequency||70 MHz|
|Range:||−40 to 60°C|
|Bulk electrical conductivity (ECb)|
|Range:||0–10 dS/m (bulk)|
|Accuracy:||±5% of measurement|
|Output||DDI serial or SDI-12 communications protocol|
|Data logger compatibility||Any data acquisition system capable of 4.0- to 15-VDC power and serial or SDI-12 communication (see compatibility chart)|
|Measurement volume||1010 mL|
|Dimensions||Length: 9.4 cm (3.70 in)
Width: 2.4 cm (0.95 in)
Height: 7.5 cm (2.95 in)
|Probe length||5.5 cm (2.17 in)|
|Operating temperature range||Minimum: –40°C
NOTE: Sensors may be used at higher temperatures under certain conditions; Contact Customer Support for assistance
|Cable length||5 m (standard)
75 m (maximum custom cable length)
NOTE: Contact Customer Support if a nonstandard cable length is needed
|Connector types||3.5-mm stereo plug connector or stripped and tinned wires|
|ELECTRICAL AND TIMING CHARACTERISTICS|
|Supply voltage (VCC) to GND||Minimum: 4.0 VDC
Maximum: 15.0 VDC
|Digital input voltage (logic high)||Minimum: 2.8 V
Typical: 3.6 V
Maximum: 3.9 V
|Digital input voltage (logic low)||Minimum: –0.3 V
Typical: 0.0 V
Maximum: 0.8 V
|Power line slew rate||Minimum: 1.0 V/ms
|Current drain (during 25-ms measurement)||Minimum: 3.0 mA
Typical: 3.6 mA
Maximum: 16.0 mA
|Current drain (while asleep)||Minimum: NA
Typical: 0.03 mA
|Power up time (DDI serial)||Minimum: 80 ms
Maximum: 100 ms
|Power up time (SDI-12)||Minimum: NA
Typical: 245 ms
|Measurement duration||Minimum: 25 ms
Maximum: 50 ms
|COMPLIANCE||Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)
2014/30/EU and 2011/65/EU
EN61326-1:2013 and EN55022/CISPR 22