The SNiP-10HS is a 'Sensor Node Integrated Package' for LoRaWAN communication of real-time soil moisture measurement for continuous soil monitoring.
The 10HS Soil Moisture Sensor measures the dielectric permittivity of a surrounding medium using capacitance technology. The sensor uses a 70 MHz frequency, which minimises salinity and textural effects, making it an ideal sensor in agricultural and standard scientific projects.
Larger Volume of Influence
Looking for a soil moisture sensor with a larger volume of influence? Use the 10HS to accurately measure water content where a large volume of influence is needed, with minimal salinity and textural effects in most soils.
Characterise Spatial Variability
At 10 cm long, the 10HS has a 1 litre area of influence. Imagine the probe running the length of a one litre bottle–the bottle represents the approximate area of influence. The 10HS estimates the volumetric water content of the soil within that volume.
Engineered for Accuracy
The 10HS determines volumetric water content (VWC) by measuring the dielectric constant of the soil using capacitance/frequency domain technology. Using a 70 MHz frequency minimises salinity and textural effects, making the 10HS accurate in most soils. Factory calibrations can be used in most typical soils with a saturation extract EC of 10 dS/m.
Integrate with CSI Data Loggers
The 10HS’s analogue signal means no-hassle integration with systems manufactured by other companies (such as Campbell Scientific). An on-board voltage regulator allows the Decagon factory calibrations to be used with any excitation voltage between 3 and 15V.
Use with the Topp Equation
The 10HS’s output can be set to dielectric for use with the Topp Equation or other dielectric-to-volumetric water content conversion equations.
Reasons to pick the 10HS:
The AD-NODE is designed for those requiring precision in their analogue and digital measurements. With a 24-bit ADC, the AD-NODE supports two RTDs, a 0–10V with compressing range and a 4–20mA input and four dry-contact digital inputs is capable of simultaneously sampling at 1 kHz, with periodic reporting. Settings on the device can be altered remotely via LoRaWAN™ or locally via USB.
The 10HS measures volumetric water content via the dielectric constant of the soil using capacitance technology. The sensor uses a 70 MHz frequency, which minimises salinity and textural effects, making it an ideal sensor in agricultural and standard scientific projects.
|Range:||Apparent dielectric permittivity (εa) : 1 (air) to 50
Soil volumetric water content : 0 – 0.57 m3/m3 (0 -57% VWC)
|Accuracy:||Apparent Dielectric Permittivity (εa) : ± 0.5 from (εa) of 2 to 10, ±2.5 from (εa) of 10 to 50 (VWC)
VWC: Using standard calibration equation: ± 0.05 m3/m3 (± 5% VWC) typical in mineral soils. Using soil site specific calibration, ± 0.02 m3/m3 (± 2% VWC)
|Resolution:||(εa): 0.1 from εa of 1 to 30, 0.2 from (εa) of 30 to 50
VWC: 0.0008 m3/m3 (0.08% VWC) in mineral soils from 0 to 0.50 m3/m3 (0-50% VWC)
|Time||10 ms (milliseconds)|
|Power requirements:||3VDC @ 12mA to 15 VDC @ 15 mA
On board voltage regulator allows 10HS sensor to be used with any excitation voltage above 3V
|Operating Temperature:||0 – 50°C|
|Output:||300 (dry soil) – 1250 (saturated) mV, independent of excitation voltage|
|Connector Types||3.5 mm “stereo” plug or stripped and tinned lead wires|
|Cable Length||5 m standard|
|Dimensions||Dimensions 14.5 x 3.3 x 0.7 cm|
|ANALOG SENSORS||DIGITAL SENSORS|
|MEASURES||volumetric water content, dielectric permittivity||volumetric water content, dielectric permittivity||volumetric water content, dielectric permittivity, temperature||volumetric water content, dielectric permittivity, temperature, electrical conductivity||volumetric water content, dielectric permittivity, temperature, electrical conductivity||water potential,
|VOLUME OF INFLUENCE||0.3 L||1 L||0.3 L||0.3 L||0.3 L||N/A|
|DATA LOGGER COMPATIBILITY||Em5b, Em50, Em50R, Em50G, ProCheck, ECH2O Check, Campbell Scientific*||Em5b, Em50, Em50R, Em50G, ProCheck, ECH2O Check, Campbell Scientific*||Em50, Em50R, Em50G, ProCheck, Campbell Scientific*, SDI-12 capable||Em50, Em50R, Em50G, ProCheck, SDI-12 capable||Em50, Em50R, Em50G, ProCheck, SDI-12 capable||Em50, Em50R, Em50G, ProCheck, SDI-12 capable|
|MEASUREMENT RANGE||0 to 100% VWC||0 to 57% VWC||0 to 100% VWC
-40 to 50°C
|0 to 100% VWC
-40 to 50°C
0 to 23 dS/m
|0 to 100% VWC
-40 to 80°C
0 to 23 dS/m
|-10 to -500 kPa (pF 2 – pF 3.71)
-40 to 50°C
|BEST IF||VWC is all that you need.You’re establishing a large sensor network.||You want a large volume of influence.||You have high temperature variability in your soils.
You are monitoring shallow or desert soils where data must be corrected for temperature effects.
You need to monitor soil temperature for biological activities.
You want to use SDI-12.
|You are managing salts in your system. You want to use SDI-12.||You are measuring water content of soilless substrates.
You need high accuracy EC.
You need to measure at high temperatures
|You want to compare soil moisture at different research sites.
You want to determine water available for plant growth.
You are monitoring deficit irrigation.
You want to measure water potential.
|BUT NOT IF||You cannot apply a regulated voltage (only applies to non-Decagon data loggers).||You are measuring in nursery pots.You are installing in rocky soil.||N/A||You want to monitor soiless substrates or potting soils.||You are doing downhole installations.||You want to monitor soils at or near saturation.|