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Soil Moisture and Salinity Sensor
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Price
Price on request ≥1piece
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Model Number
HydraProbe -
Data Sheet
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HydraProbe -
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Product Description
HydraProbe Soil Moisture and Salinity Sensor Description
HydraProbe is a rugged soil sensor with patented technology that provides continual, consistent accuracy measuring the three most significant soil parameters simultaneously—moisture, salinity and temperature.
As the most scientifically researched soil sensor available, it has been depended on by the USDA, NOAA, NASA, leading irrigation companies, and many universities for over 20 years. It’s been engineered to be exceptionally rugged and will provide data that you can trust year after year.
HydraProbe to Go
The HydraProbe Field Portable puts the power of HydraProbe in the palm of your hand.
Take soil measurements anywhere, without the effort or expense of setting up a permanent soil monitoring system. Your smartphone communicates wirelessly with the HydraProbe using an ad-hoc wi-fi network created by the HydraProbe Field Portable.
Simply insert the probe into the soil, and tap on the “Sample” button in the app. The location of each measurement is recorded along with the soil measurement data. All data can be saved and emailed as a .CSV for analysis in Excel.
* Accuracy may vary with some soil textures.
** Extended temperature range sensor (down to -40° C) available
Electrical and Communication
Environmental
Physical
* ”Extended Temperature Range” version available, which can measure down to -40° F (-40° C) for research, cold-climate, high-altitude, arctic applications or any ot her measurement situation where there will be significant below-freezing ground temperatures.
HydraProbe Soil Moisture and Salinity Sensor ORDERING INFORMATION
HydraProbe is a rugged soil sensor with patented technology that provides continual, consistent accuracy measuring the three most significant soil parameters simultaneously—moisture, salinity and temperature.
As the most scientifically researched soil sensor available, it has been depended on by the USDA, NOAA, NASA, leading irrigation companies, and many universities for over 20 years. It’s been engineered to be exceptionally rugged and will provide data that you can trust year after year.
HydraProbe to Go
The HydraProbe Field Portable puts the power of HydraProbe in the palm of your hand.
Take soil measurements anywhere, without the effort or expense of setting up a permanent soil monitoring system. Your smartphone communicates wirelessly with the HydraProbe using an ad-hoc wi-fi network created by the HydraProbe Field Portable.
Simply insert the probe into the soil, and tap on the “Sample” button in the app. The location of each measurement is recorded along with the soil measurement data. All data can be saved and emailed as a .CSV for analysis in Excel.
|
MEASUREMENT |
ACCURACY |
RANGE |
RESOLUTION |
|
Real dielectric permittivity (isolated) |
< ± 0.5% or ± 0.2 dielectric units |
1 to 80 where 1 = air, 80 = distilled water |
0.001 |
|
Soil moisture for inorganic & mineral soil |
± 0.01 WFV for most soils ± ≤0.03 max for fine textured soils* |
From completely dry to fully saturated (from 0% to 100% of saturation) |
0.001 |
|
Bulk electrical conductivity |
± 2.0% or 0.02 S/m whichever is typically greater* |
0 to 1.5 S/m |
0.001 |
|
Temperature** |
± 0.3° C |
-10°C to +60° C |
0.1°C |
|
Inter-sensor variability |
± 0.012 WFV (θ m3 m-3 ) |
n/a |
|
** Extended temperature range sensor (down to -40° C) available
Electrical and Communication
|
|
SDI-12 |
RS485 |
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Power supply |
9-20 VDC |
9-20 VDC |
|
Power consumption |
<1 mA idle / 10 mA active |
<1 mA idle / 30 mA active |
|
Cable |
3-wire: power, ground, data |
4-wire: power, ground, com+, com- |
|
Max. cable length |
60 m (197 ft.) |
1,219 m (4,000 ft.) Non-spliced: 304.8 m (1,000 ft.) |
|
Baud Rate |
1200 |
9600 |
|
Communication protocol |
SDI-12 Standard v. 1.2 |
Custom or open spec |
|
Addressing |
Serial; allows multiple sensors to be connected to any RS485 or SDI-12 data logger via a single cable. |
|
Environmental
|
Operating Temperatures |
• In soils: freezing to +60° C • Standard temperature probe range: -10° C to +60° C • Extended temperature probe range: -40° C to +60° C* |
|
Storage Temperatures |
-40° C to +60° C |
|
Water Resistance |
Tolerates continuous full immersion |
|
Cable |
18 gauge (20 gauge for RS-485/analog), UV resistant, direct burial |
|
Vibration and shock resistance |
Excellent; potted components in PVC housing and 304 grade stainless steel tines |
Physical
|
Length |
4.9” (124 mm) |
|
Diameter |
1.6” (42 mm). Optional slim housing version available: 1.4” (35.8 mm) |
|
Weight |
7 oz. (200 g). Optional slim housing version available: 6.5 oz. (184 g) |
|
Cable weight |
0.86 oz/ft (80g/m) |
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Sensing volume (cylindrical region) |
Length: 2.2” (5.7 cm) Diameter: 1.2” (3.0 cm) |
HydraProbe Soil Moisture and Salinity Sensor ORDERING INFORMATION
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PART # |
DESCRIPTION |
|
93640-025 / 63646-025 |
HydraProbe with 25’ (7.62 m) cable, SDI-12 / RS485 |
|
93640-050 / 63646-050 |
HydraProbe with 50’ (15.24 m) of cable, SDI-12 / RS485 |
|
93640-100 / 63646-100 |
HydraProbe with 100’ (30.48 m) of cable, SDI-12 / RS485 |
|
93633-003 |
HydraProbe Field Portable |