As the industry and ag technology continue to evolve, there’s been a growing conversation around the efficiency of sensors in grain storage. A recent claim raised some concerns about the effectiveness of cable-based systems in detecting hot spots within grain storage. While these claims present a perspective on thermal conductivity and the time it takes for heat to propagate through grain, it misses an important point: sensors on cables are crucial to managing grain health and preventing spoilage efficiently.
“The best way to monitor the stored grain is through multiple in-bin temperature and moisture sensing cables. At present, I do not see any alternative monitoring technology that can replace moisture and temperature cables, particularly in large diameter bins (greater than 36 feet). Accurate in-bin grain moisture monitoring is complex and will be very challenging with any new technology. Moisture sensing cables with precise grain isotherm curves give reasonably accurate measurements.”
Here’s why:
Grain Is Not Static – Hot Spots Are Dynamic
Heat diffuses through grain over time using thermal conductivity formulas. However, we cannot oversimplify this situation. When a hot spot forms in a grain mass, you are no longer dealing with a static temperature that diffuses outwards. Instead, you have a heat-producing source that continuously raises the temperature of its surroundings. This is more like adding color to water, not just letting it spread passively. When this happens, it’s essential to detect the hot spot immediately, which can be done with an efficient sensor system integrated strategically in the grain bin.
Increased Coverage Equals Better Protection
Just like having an oil temperature gauge in a vehicle, having a thorough cable sensor network in your grain bin allows you to closely monitor the temperature at multiple points, even establishing automatic alerts to notify you of activity. While aeration can help cool down the grain, relying solely on it without monitoring can be compared to running a fan 24/7 without knowing whether it’s necessary. By having cables with multiple sensors, you get more detailed data and can take action as soon as a hot spot is detected. This limits the potential damage to the grain and, in most cases, can allow you to make choices, preventing financial loss.
Running Fans vs. Preventing Spoilage
Without monitoring, you’ll be forced to run fans constantly, leading to unnecessary energy costs. Let’s break it down: if you run a fan for 120 hours a month across several bins, you could be wasting hundreds of dollars per month on aeration alone. At the same time, spoilage could end up costing you more than the cost of the sensor system itself.
Let’s consider a hot spot undetected could grow to a 6-foot sphere in the grain, leading to 22.5 bushels of spoiled grain. At current grain prices, this loss could cost around $130. But that’s assuming you don’t catch it immediately, and the spoilage could be as high as 25%. On the other hand, if you are running fans unnecessarily without proper monitoring, the annual cost of aeration could be as high as $792 per bin – with potentially 75% of that aeration being unnecessary and risking over conditioning the grain.
The Real Value: Peace of Mind and Data Visibility
With sensors in place, you get far more than just temperature data. You get the ability to make informed decisions on when to run aeration and when to stop. You get a clear view of your grain’s condition, making it easier to prevent spoilage, reduce costs, and ultimately ensure the grain reaches the market in optimal condition.
Trust the most comprehensive solution
In conclusion, don’t question the effectiveness of cable-based systems, seek to understand what they deliver. We believe that more coverage and detailed, real-time data are key to better grain storage practices. With sensors on cables, you minimize the risk of undetected hot spots, ensure efficient aeration, and protect your grain – all while saving time, energy, and cost. In the end, having the right monitoring system in place isn’t just a safety measure, it’s an investment in the future of your grain management operation.