Take soil measurements anywhere for those applications not requiring a permanent soil monitoring system. Your Apple or Android device communicates wirelessly with the HydraProbe using an ad-hoc wi-fi radio link.
Simply insert the probe into the soil, and tap on the “Sample” button in the HydraMon app. The HydraGO Field Version communicates wirelessly with your smartphone or tablet using an ad-hoc wi-fi network created by the device itself.
The HydraGO Field Version is available with and without a survey-quality, sub-meter GPS receiver. When using a unit without an integrated GPS, the (less accurate) position measured by the smartphone is used when logging data.
The app will display soil moisture content, temperature, conductivity, and dielectric permittivity on-screen for immediate viewing. The GPS location, date and time of each measurement is recorded along with the soil measurement data. All data can be saved and emailed as a .CSV file for analysis in Excel.
The HydraGO Field Version features a rugged, anodized aluminum housing that contains a rechargeable battery that powers the connected HydraProbe and built-in wi-fi radio. It comes with a carry strap for easy on-the-go measurements.

Technical Specifications
Battery Type | Rechargable NiMH Battery, 12V/2500 mAh |
Wireless Protocol | Wi-Fi (802.11b) |
Housing | Acetal material |
Cable | 22 gauge, Jacketed |
Operating Temperature | Probe: -10°C to +65°C ( 14°F to +149°F ) Case / Connectors: 0°C to +65°C ( 0°F to +149°C ) |
Water Resistance | Probe: tolerates continuous full immersion in liquid Case / Connectors: Weather resistant only. |
Soil Probe | Stevens HydraProbe (included) with weatherproof connector |
Parameters Measured | Soil Moisture,Temperature, Bulk electrical Conductivity, Dielectric Permittivities |
Dimensions | 135.4mm (5.33") L x 121.6 mm (4.78")W x 47.9 mm (1.89") H |
Weight ( case & probe ) | 1.08 kilos (2.38 lbs.) |
Part number | 93633-006 (w/o GPS), 93633-005 (w/GPS) |
Downloads

Download Stevens'
Product Catalog
Enter your name and email address to receive a link to the PDF version of the Stevens Product Catalog. You will be subscribed to the Stevens Water newsletter (you can unsubscribe any time).
Download the Stevens Soil Resource Guide
Written by the soil experts at Stevens, our soil resource guide contains a wealth of information and will benefit anyone involved with soil. Whether you’re a soil scientist, a farmer or a soil researcher, this 52 page book is a fantastic reference and source of up-to-date theories, practices and advice.
Inside:
Soil Geomorphology
Soil Properties
Salinity / Electrical Conductivity (EC)
Dielectric Permittivity
Soil Monitoring Applications
Soil Moisture and Irrigation
Soil Sensor Technologies
Soil Sensor Calibration
Sensor Accuracy
…and much more!
Shop Online / Inquire
Need more information? We’re here to help!
Tell us a bit about yourself and your question and we’ll get back to you ASAP.