Jeff Chan

Stevens Water and US Farm Bill Helps Farmers Optimize Crop Irrigation & Fertilization

Agriculture is a major element for survival of the human race and of the economic system. 42 percent of the world’s laborers are employed in agriculture, making it by far the most common occupation. With agriculture using approximately 60 percent of available freshwater withdrawals, concerns continue to grow over farmers implementing water conservation practices. Increasing …

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New Features Available in HydraMon v.1.3

We’ve updated our HydraMon app for iOS and Android devices. HydraMon allows users to configure and download data from the HydraProbe soil sensor through the HydraProbe Field Portable. Here’s what’s new in v.1.3: Ability to log the location of the sample using your smartphone’s GPS Add a memo to the data set Add an image …

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Calibration of a Capacitance Soil Sensor Required to Achieve the Level of Accuracy Required for Satellite Ground Truthing

This study published in American Meteorological Society’s BAMS journal demonstrates the extent of variability in readings one can expect with a soil moisture sensor based on capacitance technology. To obtain the highest level of accuracy that is required for remote sensing applications, capacitance-based soil sensors often need to be recalibrated. The HydraProbe is an impedance-based …

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Free Software Lets You Use HydraProbe to Determine Soil Water Retention Curve

The Soil Water Characteristics software is a hydraulic properties calculator, developed by the US Department of Agriculture and Washington State University. It estimates soil water tension, conductivity and water holding capability based on the soil texture, organic matter, gravel content, salinity, and compaction. The Soil Water Characteristics software is a hydraulic properties calculator, developed by …

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Using the HydraProbe Soil Sensor for Determination of Flood Risk in the New York State Mesonet

In January 2014, the Department of Homeland Security established the New York State Early Warning Weather Detection System. The centerpiece of the system is the New York State Mesonet, a network of 125 weather stations across the state, with at least one site in every county. Each site measures temperature, humidity, wind speed and direction, …

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Featured Research Using the HydraProbe Field Portable

A new study “Investigating the backscatter contrast anomaly in synthetic aperture radar (SAR) imagery of the dunes along the Israel–Egypt border” will appear in the International Journal of Applied Earth Observation and Geoinformation, Volume 46, April 2016, Pages 13-21. For the study, the researchers used the HydraProbe Field Portable (now called HydraGO C) extensively. Click here to …

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HydraProbe selected to be used in Canada’s RISMA Network for Agricultural Monitoring

A new study published in the Soil Science Society of America Journal investigated the field performance of 5 soil moisture instruments in heavy clay soils. The HydraProbe outperformed TDR and capacitance-based soil sensors in terms of stability and accuracy in Manitoba’s agricultural soil. Much of soil in the Canadian Prairie farmland is vertisolic. A new …

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Dial-up, Push, Pull, Scheduled or On-Demand: The flexibility of M2M

Stevens M2M remote communications products (Cell-Net and eTracker) offer lots of flexibility for getting your data from a remote site. And don’t forget that reconfiguring how and when data is sent can be done anytime, from any device using the web-based interface. Multiple ways to trigger a transmission: transmit data based on schedule, or triggered …

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How to Add a Secondary Telemetry to Your GOES Station

GOES, for all it’s no-cost, reliable virtues, has some drawbacks. First, it’s a one-way transmission—there’s no way of sending any data to your station. This means there’s no way to reprogram a data logger or reboot a stuck data logger or purge a bubbler without (an unplanned) visit to the site. The Stevens SatCom GOES …

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Top 9 specs to consider in a GOES transmitter in 2016

If you haven’t considered these specs before, you should—and here’s why. Option to easily add 2-way telemetry. The reasons for having 2-way redundant telemetry are explained in the above article…a dual-telemetry system can always be cobbled together, but when the GOES transmitter is designed with this capability built-in, things are so much easier. TCXO frequency …

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An Overview of Stevens’ Approach to Making Remote Communications Simpler, More Flexible and Incredibly Reliable

Here is an overview of three (3) different remote data collection scenarios using Stevens products that can increase the reliability of your networks, can work with virtually any existing equipment, and are super easy to install, configure and reconfigure (anytime, anywhere). The three (3) are GOES dual telemetry, Cell-Net, and eTracker. The power of the …

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