Fan Buddy Instruction Manual

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Welcome to Fan Buddy, your go-to tool for making smarter grain aeration decisions using real-time environmental conditions and scientifically backed calculations. Developed by Martin Tech LLC, Fan Buddy is a free, browser-based app designed for farmers, grain handlers, and storage managers who want to optimize fan operation without needing a fully automated system. It calculates the Equilibrium Moisture Content (EMC) of grain based on temperature, humidity, and crop type, then provides a clear, color-coded recommendation for whether or not to run aeration fans, and a powerful EMC forecast. The goal is simple: maximize grain quality, minimize energy waste, and give you confidence in every fan decision whether you're drying soybeans in October or conditioning wheat through the winter.

Who Is Fan Buddy For?:

• Grain producers managing on-farm storage
• Elevator operators and grain handlers
• Consultants advising on post-harvest management
• Anyone seeking to understand EMC-based aeration decisions

Whether you're just curious about EMC or want to apply its principles in daily operations, Fan Buddy gives you a reliable starting point.

What Can Fan Buddy Help You Do?:

• Calculate EMC using trusted scientific models
• Receive immediate fan operation guidance based on your goals
• Forecast future EMC using weather data
• Visualize saved readings and track decision trends over time
• Make more informed choices without needing advanced monitoring equipment

What This Manual Covers:

This manual provides a complete guide to understanding, using, and interpreting Fan Buddy:

• Step-by-step usage instructions
• Detailed explanations of EMC and how it affects grain
• Best practices for drying, conditioning, and rehydrating
• Forecasting tips and chart interpretation
• Limitations, support resources, and contact information

Fan Buddy is built on the principle that smart decisions shouldn't require complex systems. With just a few inputs, this tool helps you protect your grain and your bottom line.

BACK TO TABLE OF CONTENTS

Before diving into how to use Fan Buddy, its essential to understand the science and strategy behind it. This section explains what Equilibrium Moisture Content (EMC) is, why it matters, and how it forms the foundation for intelligent aeration decisions.

2.1) What is EMC?:

Equilibrium Moisture Content (EMC) is the moisture level grain will naturally reach if exposed to a specific combination of air temperature and relative humidity over time. At equilibrium, the grain is neither gaining nor losing moisture, it's in balance with the air.

• If the air is drier than the grain (lower EMC), the grain will lose moisture.
• If the air is more humid than the grain (higher EMC), the grain will absorb moisture.
• If the EMC is close to grain moisture, very little change will occur, which is ideal for conditioning.

Think of EMC as the target that grain will move toward when exposed to the air. This simple principle allows you to predict grain behavior and make smarter fan decisions.

2.2) Why EMC Matters:

Grain doesn't dry or rehydrate instantly, it slowly trends toward the surrounding air's EMC. So, understanding and calculating EMC helps you:

• Dry more efficiently by running fans only when air can effectively remove moisture.
• Avoid rewetting during humid conditions, even if the temperature feels right.
• Maintain condition in storage without unwanted moisture gain or loss.
• Improve grain quality and value by staying within safe moisture ranges.
• Reduce energy costs by preventing unnecessary or harmful fan runs.

💡 Running fans at the wrong time wastes electricity and can hurt grain quality. EMC-based decisions make sure each run is worth it.

2.3) The Science Behind Fan Buddy:

Fan Buddy uses a scientifically established EMC equation that incorporates three crop-specific constants (A, B, C):

EMC (%) =100M/100+M

Where:

M =  -1/B*ln((-(T+C)/A)*ln(RH))

And:

 T = Temperature (converted to C if input is in F)

 RH = Relative Humidity (expressed as a decimal)

 A, B, C = Constants unique to each crop (e.g., corn, soybeans, wheat)

2.4) Crop Constants: What They Are and How They're Derived:

The A, B, and C constants represent how a specific crop responds to environmental conditions based on its physical structure, oil content, and moisture retention properties.

Lab-Derived Through Sorption Isotherm Testing

To derive these constants, researchers conduct controlled sorption isotherm experiments in a lab setting:

     1.  Samples of grain (e.g., corn, soybeans) are placed in tightly controlled chambers.

     2.  The chambers maintain fixed temperature and relative humidity conditions.

     3.  The grain is exposed for days or weeks until it stabilizes (reaches equilibrium).

     4.  Researchers measure the final moisture content of the grain.

     5.  This is repeated at multiple temperature and humidity combinations.

     6.  The resulting data points are plotted and a curve is fitted using mathematical regression models.

That curve is what gives us the constants A (shape), B (sensitivity), and C (temperature offset).

Why Constants Vary by Crop

• Corn retains moisture differently than soybeans due to its starch and kernel structure.
• Soybeans absorb water faster due to their oil content and porous seed coat.
• Wheat and barley behave differently depending on whether they are spring or winter varieties.

💡 Even within the same crop, different varieties or hybrids can respond differently. Fan Buddy uses published average constants.

2.5) Historical Use of EMC in Agriculture:

The concept of Equilibrium Moisture Content dates back over a century. Here's a quick timeline:

• Early 1900s: Researchers began linking grain spoilage and mold to ambient humidity levels.
• Mid-20th Century: EMC became standardized in post-harvest research; tables were published by USDA and universities.
• 1960s-1980s: EMC charts were printed and taped to grain dryers and bin control panels. Operators used them with hygrometers and dry-bulb thermometers.
• 2000s-Today: EMC is now embedded in software, automated control systems, and calculators like Fan Buddy.

📘 In other words, the science hasn't changed, just the tools. Fan Buddy puts that same proven science in your pocket with real-time weather and crop logic.

2.6) Moisture Management Goals Explained:

Fan Buddy tailors its recommendations based on your selected aeration goal:

🔽 Drying

You want to lower the grains moisture to a safe storage level. Fan Buddy looks for EMC conditions that can draw moisture out of the grain effectively, without overshooting and over-drying. Best when reducing grain moisture by more than 2%.

🔼 Rehydrating

You want to carefully raise moisture (common with soybeans or dry corn to meet contract specs). Fan Buddy identifies air conditions where moisture can be safely added without going too far. Best when increasing moisture by 2%.

➖ Conditioning

You're happy with current moisture and want to maintain it. The app looks for stable EMC values close to your grains moisture to preserve quality without change.

❓ No Goal

You just want to see the EMC without recommendations. This is useful for testing values, comparing crops, or learning how EMC works under different conditions.

💡 Choosing the right goal is crucial. Fan Buddy's logic changes based on what you're trying to do.

BACK TO TABLE OF CONTENTS

Fan Buddy is designed to be fast, clear, and intuitive, whether you're sitting at your desk or pulling up the tool on your phone at the bin site. This section walks you through each part of the apps interface and how to use it correctly for accurate EMC results and fan recommendations.

3.1) Step-by-Step Walkthrough:

1. Select Your Goal:

Use the Select Goal dropdown to choose your operation type:

•  No Goal You just want to view the calculated EMC without guidance.
•  Drying You're trying to lower grain moisture by more than 2%. Otherwise, select Conditioning.
•  Rehydrating You're attempting to raise moisture content by more than 2% (e.g., soybeans below spec). Otherwise, select Conditioning.
•  Conditioning You want to hold grain steady at current moisture, or when current moisture is within 2-3% of target.

💡 Selecting a goal not only enables additional logic for fan recommendations, but also the forecast chart shaded zones .

2. Choose Your Crop Type:

Use the Crop Type dropdown to select the grain you're working with. Each crop has its own EMC behavior, and Fan Buddy uses internal constants (A, B, C) specific to that crop.

Available crops include:

• Corn
• Soybeans
• Barley
• Spring & Winter Wheat
• Sunflowers (Oil & Confectionary)
• Canola, Edible Beans, Sorghum, Field Peas, Rice, and more

⚠️ Be sure to select the correct crop EMC varies significantly between them.

3. Enter Moisture Data:

If you've selected Drying, Rehydrating, or Conditioning, you'll need to enter:

• Current Grain Moisture (%): The actual moisture in the bin, based on your last test.
• Target Grain Moisture (%): Your desired final moisture (not needed for Conditioning).

If No Goal is selected, these fields disappear to reduce clutter.

💡 Accurate moisture readings are key to meaningful recommendations.

4. Input Ambient Conditions:

There are two ways to tell Fan Buddy what kind of air your grain is experiencing:

• Manual Entry (recommended):
  • Enter Temperature and Relative Humidity based on your bin site.
  • Use sensors, handheld meters, or manual readings from your site.
• ZIP Code Lookup (convenient):
  • Enter a 5-digit ZIP Code and click Lookup Weather.
  • The app pulls current temperature and humidity from openweathermap.org.

You can also choose your preferred unit of temperature: F(default)/C

Click the Reset button to clear ambient values and start fresh.

⚠️ Manual readings are usually more accurate than ZIP-based estimates.

5. View EMC and Recommendation:

As soon as valid inputs are entered, Fan Buddy:

• Calculates the Equilibrium Moisture Content (EMC) for the selected crop.
• Displays the EMC in bold just below the input area.
• Shows a color-coded recommendation:
  • ✅ Green Good to run fans
  • ⚠️ Yellow Minimal gains; use best judgement
  • ❌ Red Risk of damage or waste; avoid running fans

💡 The recommendation changes dynamically as you adjust any input.

6. (Optional) Enable Forecast View:

Want to look ahead? Here's how:

• Set Show EMC Forecast to Yes.
• Enter your ZIP and click Lookup Weather.
• The app calculates and plots EMC values for the next 5 days, based on forecasted temperature and humidity.
• A dynamic chart will appear showing EMC trends and shaded zones for fan logic.

⚠️ The forecast feature only works when weather is fetched via ZIP code.

7. (Optional) Use the Trending Chart:

Click View Trending to expand the historical charting tools.

• Click Save Reading to log the current EMC, crop, conditions, and moisture levels.
• Click Clear History to wipe all stored readings and reset entire calculator (this action cannot be undone).

⚠️ Caution: The Clear History button is a permanent wipe of all saved data!

You can save as many readings as you like. They'll persist in your browser for future review, even if you close the app.

BACK TO TABLE OF CONTENTS

Once you've entered valid ambient conditions and grain data, Fan Buddy provides two core outputs:

1. A real-time calculated EMC
2. A color-coded recommendation on whether or not to run your fans

This section explains how to interpret these results and how to gain deeper insights from Fan Buddy's two powerful visual tools: the Forecast Chart and the Trending Chart.

4.1 Instant EMC Calculation & Recommendation:

At the heart of the app is the EMC calculation. It appears immediately once temperature, humidity, and crop are entered. When a goal is selected, Fan Buddy also gives you a color-coded recommendation box that interprets the result.

          Color Zones and What They Mean

• ✅ Green

                    -  Favorable for selected goal

                    -  Safe to run fans

• ⚠️ Yellow

                    -  Marginal conditions

                    -  Minimal impact

• ❌ Red

                    -  Unfavorable / risk of harm

                    -  Avoid running fans

          How Logic Works by Goal

• No Goal:
  • Only the EMC is shown.
  • Useful for research or training.
• Conditioning:
  • Green: EMC is within 2% of current grain moisture.
  • Yellow: EMC is 2-4% off; possible shifts in grain moisture, monitor closely.
  • Red: EMC is more than 4% different, don't run fans.
• Drying:
  • Green: EMC is 1.5%+ below current and within 5% of your target.
  • Yellow: EMC is slightly lower than current; may dry slowly.
  • Red: EMC is higher than current or too low; risk of rewetting or overshooting target.
• Rehydrating:
  • Green: EMC is 1.5%+ above current and within 5% of your target.
  • Yellow: EMC is marginally effective.
  • Red: EMC is lower than current or too high, risk of drying or overshooting target.

💡 These recommendations update live when any of the user inputs change.

4.2 EMC Forecast Chart:(Optional, shown when enabled in Ambient Conditions window)

The forecast chart gives you a 5-day view of predicted EMC values, based on 3-hour interval weather forecasts.

          Key Features:

• Blue line/Dots Forecasted EMC data trend/data points
• Green line Target grain moisture (Drying/Rehydrating goals)
• Red line Current grain moisture (All goals, excluding No Goal)
• Shaded zones Vary based on your goal:
  • ✅ Green: Ideal conditions for the selected goal
  • ⚠️ Yellow: Risk of overshooting target moisture
  • ❌ Red: Risk of damage or wasted energy
  • ⚪ White: Marginal or Inefficient fan operation

⚠️ Keep in mind: The color code for the EMC Forecast Shaded zones are different than the EMC Output Fan recommendation color codes. Still giving the same advice based on your selected goal and inputs.

💡 The forecast helps you plan ahead, catch good windows and skip bad ones before they arrive.

          How to Use It

• Watch for extended green zones to plan long fan runs.
• Use yellow zones carefully, short bursts may help achieve your goal faster, but carry risk.
• Avoid red zones entirely.

*See Section 5 for more information on the Forecast Chart

4.3 Trending Chart:(Optional, appears when View Trending is clicked)

This tool helps you track how your calculated EMC and moisture levels change over time.

          What It Shows

• Blue line: Historical EMC values
• Red line: Saved current grain moisture values
• Green line: Target moisture (if set)
• Tooltip details: Clicking on data points will show: EMC, timestamp, temp, humidity, and crop type

          How to Use It

• Track changes in EMC over hours or days
• Compare grain behavior to air conditions
• Audit past decisions, see if fans were run during good or bad windows
• Spot trends (e.g., if EMC is steadily rising or falling)

⚠️ Saved readings are stored in your browser and will be permanently lost if you clear local storage by clicking Reset History.

*See Section 6 for more information on the Trending Chart

BACK TO TABLE OF CONTENTS

The EMC Forecast Tool gives you the ability to look ahead, using real weather forecasts to see how ambient conditions will impact your grain over the next 5 days. With this feature, you can schedule fan runs more strategically instead of reacting to conditions hour by hour.

5.1 How to Enable the Forecast Tool:

To turn on the forecast chart:

1. Set Show EMC Forecast to Yes.
2. Enter your ZIP Code.
3. Click Lookup Weather.
4. The chart will automatically appear once forecast data is retrieved.

⚠️ The forecast only works with ZIP-based weather lookup, it is not available when using manual temp/humidity input.

5.2 What the Forecast Shows:

The chart displays the predicted Equilibrium Moisture Content (EMC) for your selected crop at 3-hour intervals for the next 5 days, using temperature and humidity data from openweathermap.org.

Chart Features:

• Blue Line Forecasted EMC values
• Green Dashed Line Target Grain Moisture (if provided)
• Red Dashed Line Current Grain Moisture (if provided)
• Shaded Zones Color-coded ranges that represent how favorable the air is for your selected goal

5.3 Understanding the Shaded Zones:

Each zone represents a different level of suitability for your goal (Drying, Rehydrating, or Conditioning):

🟩 Green Zone Best for Goal

• Drying: EMC is low enough to effectively remove moisture.
• Rehydrating: EMC is high enough, but not too high, to safely and effectively add moisture.
• Conditioning: EMC is within 2% of current grain moisture.
• ✅ Run fans during these times if your goal aligns.

🟨 Yellow Zone Aggressive/Higher risk of overshooting target

• May dry or rehydrate too quickly, causing overshoot.
• OK for short term aggressive moisture movement, especially when your target moisture is significantly lower/higher than your current moisture.
• Monitor grain moisture closely.
• ⚠️ Use caution or shorter run times.

🟥 Red Zone Unsafe or Wasteful

• Drying: EMC is too close to or above current grain moisture.
• Rehydrating: EMC is too low or aggressive.
• Conditioning: EMC is too far off from current moisture.
• ❌ Avoid running fans in red zones.

⚪ White Zone Neutral

• Common in Drying/Rehydrating goals.
• EMC is not likely to move moisture much or efficiently.
• ⚠️ Consider skipping fan operation during these times. Unless: needed for airflow or temperature control; or if your target moisture is a long way from your current moisture.

5.4 Forecast Chart Tips:

• Look for extended green zones in the coming days, these are your best opportunities to run fans efficiently.
• Watch for sharp swings in EMC, which can signal an incoming storm or humidity shift.
• Avoid chasing marginal improvements in yellow zones if your target is already close.
• Use the dashed lines (current and target moisture) to visualize how far off the forecasted EMC is from where you are and where you want to go.

💡 Forecasting allows you to act proactively instead of reactively, especially helpful when managing multiple bins or scheduling limited fan time.

BACK TO TABLE OF CONTENTS

The Trending Tool is your built-in record keeper. It allows you to log, track, and visualize past EMC readings, giving you the ability to reflect on previous decisions, identify patterns, and improve your grain management strategies over time.

6.1 How to Access the Trending Tool:

To reveal the tool:

1. Click the View Trending button in the app.
2. A section will expand showing:
   • The Trend Chart
   • Buttons to Save Reading and Clear History

💡 The trending section is hidden by default to keep the interface clean, open it anytime to view or update your history.

6.2 Saving a Reading:

Each time you click Save Reading, the app logs a full snapshot of the current session, including:

• Timestamp (automatically recorded)
• Crop type
• Temperature and humidity
• Calculated EMC
• Current grain moisture (if entered)
• Target grain moisture (if entered)

Saved readings are stored locally in your browsers memory, so you can leave and return later without losing your history, as long as your browser data isn't cleared.

⚠️ If you change devices or clear browser storage, your readings will be lost.

6.3 What the Trend Chart Shows:

Once readings are saved, the chart displays:

• 🔵 Blue = Calculated EMC (%)
• 🔴 Red = Current Grain Moisture (%)
• 🟢 Green = Target Grain Moisture (%)

Each reading is plotted chronologically, and hovering/clicking over a point reveals a detailed tooltip with:

• Reading number and timestamp
• Crop type
• Ambient temperature and humidity at time of entry

💡 Even without full automation, this chart helps you monitor drying, rehydrating, or stable storage trends over days or weeks.

6.4 Interpreting the Chart:

Use the chart to:

• Monitor progress Is EMC trending toward your target?
• Identify issues Are you running fans when appropriate?
• Visualize performance See how well real ambient air aligns with your goal.
• Improve timing Learn which times of day yield better EMC conditions.

Example: If you consistently log better EMC values in the early morning, you might adjust your fan run schedule to take advantage of those windows.

6.5 Clearing History:

Clicking Clear History will:

• Permanently delete all saved readings
• Reset the chart to a blank state
• Refresh/reset the entire calculator

⚠️ This action cannot be undone. Only clear history when you're done with a storage season or intentionally starting fresh.

BACK TO TABLE OF CONTENTS

Knowing when and how to run fans is both a science and an art. Fan Buddy gives you accurate EMC calculations and recommendations, but the best results come when you pair the tool with smart habits, sound judgment, and a little experience. This section offers tips that will help you get the most value from Fan Buddy, whether you're drying thousands of bushels or just maintaining a few bins.

7.1 🔁 General EMC Tips for All Goals:

• Manual readings > ZIP code forecasts
  If possible, always use on-site sensors or handheld meters for temperature and humidity. Weather stations may be miles away and do not account for microclimates around your bin yard.
• Check conditions multiple times per day
  EMC can change quickly. Morning and evening checks are especially helpful since air tends to be cooler and drier at those times.
• Understand what the color codes represent
  Fan Buddy uses two different color systems: one for the instant fan recommendation box and another for the forecast chart zones.

               1. In the recommendation box, colors reflect a real-time judgment based on your inputs:

                            ✅ Green = Safe to run fans now

                            ⚠️ Yellow = Marginal/inefficient; may be acceptable depending on your situation

                            ❌ Red = Unsafe/Aggressive conditions suggest not running fans

               2. In the EMC forecast chart, shaded zones represent predicted EMC conditions relative to your goal:

                            🟩 Green Zone = Best forecasted conditions for fan operation

                            🟨 Yellow Zone = Risk of overshoot or aggressive operation

                            🟥 Red Zone = EMC conditions that oppose your goal (drying in rewetting air, etc.)

                            ⚪ White/Neutral Zone = Conditions unlikely to affect moisture significantly 

💡 The recommendation box tells you what to do right now. The forecast chart helps you plan what to do later.

7.2 🔽 Drying Tips:

• Best drying often happens at night
  Cool nighttime air usually has a lower absolute humidity, making it better at pulling moisture from grain, even when it feels humid.
• Avoid high-humidity afternoons
  Warm air can carry more moisture, but if the relative humidity is high, the EMC might be too close to your grain moisture to be effective.
• Don't over-dry
  Fan Buddy helps you avoid dropping below your target moisture, saving on shrink loss and preserving weight.

💡 Rule of thumb: Only run fans when EMC is at least 1.5% below your current grain moisture and trending toward your target.

7.3 💧 Rehydrating Tips:

• Approach carefully
  Rehydration is tricky. You want to raise moisture slowly and safely without going too far.
• Look for stable green zones in the forecast
  These represent extended windows where the air is moist enough to be effective, but not so wet that it risks damage or spoilage.
• Avoid red zones and aggressive swings
  A sudden shift to low EMC can dry your grain just as quickly as it rehydrated.

⚠️ Do not attempt to rehydrate grain without knowing your current moisture and having a clear, achievable target.

7.4 ⚖️ Conditioning Tips:

• Match air EMC to your current grain moisture
  Fan Buddy flags green when the EMC is within 2% of your current moisture level. These are ideal conditions for holding your grain steady.
• Use conditioning to control hot spots and moisture migration
  Even if you're not changing moisture levels, a well-timed fan run can equalize conditions in the bin.
• Avoid unnecessary runs
  Running fans when EMC is too far off can shift moisture unexpectedly, leading to spoilage risk or product downgrade.

7.5 🛑 When NOT to Run Fans:   

• The recommendation is red and EMC is working against your goal, or if its too aggressive, risking overshoot.
• There's fog, rain, or extreme humidity, even if EMC looks borderline.
• You haven't checked grain moisture in several days, don't guess.
• Your grain is already near or at its target and you're not conditioning.

7.6 🧠 Other Smart Habits:

• Use the Forecast to schedule fan runs in advance.
• Log your readings regularly in the Trending Tool to see patterns over time.
• Teach others on your team how to use Fan Buddy, consistency improves storage outcomes.
• Don't chase perfection. Even with the best tools, grain is a biological product. Use Fan Buddy to make informed decisions, but always stay observant.

BACK TO TABLE OF CONTENTS

Fan Buddy is a powerful tool designed to simplify grain aeration decisions using EMC. However, like any tool, it has limitations. Understanding these will help you apply its guidance more effectively and avoid common pitfalls.

8.1 🔬 EMC Equation Assumptions:

Fan Buddy uses a mathematical model based on publicly available crop constants and research data. While these equations are reliable for general decision-making, they:

• Do not account for specific hybrids or local variations in grain behavior
• Assume uniform air movement and bin conditions
• Are not dynamic models—they do not simulate real-time grain response over hours or days

⚠️ Treat EMC values as scientifically-informed estimates—not precise guarantees.

8.2 🌡️ Weather Data Variability:

• Manual entry of temperature and humidity is highly encouraged for accuracy.
• ZIP code-based forecasts can be:
  • Sourced from stations many miles away
  • Inaccurate in microclimate conditions (especially in rural, hilly, or tree protected areas)
  • Subject to forecast error, especially beyond 48–72 hours

💡 Use forecast data directionally—don’t base critical decisions solely on long-range predictions.

8.3 📉 No Runtime Modeling:

           Fan Buddy does not:

• Calculate how long to run your fans
• Account for airflow rate (CFM/bu), bin size, or grain depth
• Factor in plenum temperature, fan static pressure, or fines content

           This means:

• EMC output tells you whether to run, not how long to run
• Additional engineering/bin-site data or automated systems are needed for precise runtime control

8.4📥 Manual Moisture Input Required:

• Fan Buddy does not measure grain moisture—it relies on you to provide accurate current and target moisture levels.
• If your grain moisture changes (e.g., after a drying cycle), you must update the value yourself.

⚠️ Failure to update grain moisture can lead to misleading recommendations.

8.5 🚫 Not a Substitute for On-Site Monitoring:

Fan Buddy does not detect:

• Hot spots
• Mold formation
• Bridging or crusting
• Layered moisture zones

These conditions require:

• Regular grain probing
• Temperature cable monitoring
• Visual inspections

💡 Fan Buddy enhances—but does not replace—physical bin checks and safety protocols.

BACK TO TABLE OF CONTENTS

Fan Buddy is built by people who understand the real-world challenges of managing grain bins, watching weather, and making daily fan decisions. If you ever need help, clarification, or just want to dig deeper—we’re here for you.

9.1 📬 How to Reach Us:

For questions, support, or feedback regarding the Fan Buddy EMC Calculator:

Martin Tech LLC

 🌐 Website: www.martintechnd.com

📧 Email: chris@martintechnd.com

We welcome:

• Bug reports
• Suggestions for new features
• Help interpreting specific EMC scenarios
• Requests for training or consulting

💡 We don’t offer direct  24/7 support for the Fan Buddy EMC Calculator, but we’ll get back to you as soon as possible—usually within 2-3 business days.

9.2 🧠 Further Learning & EMC Resources:

Visit the EMC Learning Center on our website for additional tools and insights:

• Scientific explanations of EMC
• Printable reference charts
• Mock case studies with drying and rehydrating strategies
• Links  to research papers and university resources

✅ Whether you're a first-time user or a seasoned grain manager, there’s always more to learn—and we want to help.

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Fan Buddy is a decision-support tool developed by Martin Tech LLC to assist grain producers, handlers, and advisors in evaluating aeration conditions based on Equilibrium Moisture Content (EMC). It is offered as a free, educational resource—not as a certified engineering or regulatory tool. Calculations are based on standard models and crop constants sourced from publicly available data. While we strive for accuracy, we do not guarantee the precision or completeness of the results. This calculator is intended for informational purposes only and should be used alongside sound judgment and, when appropriate, professional advice. Martin Tech LLC is not liable for decisions, losses, or damages resulting from the use or interpretation of this tool. Use of this calculator for commercial resale or purposes outside its intended use is not permitted.

Terms of Use

By using Fan Buddy, you agree to the following:

• Accuracy of Inputs:
  The accuracy of the app's outputs depends on the quality of the data you provide. Martin Tech LLC is      not responsible for inaccurate results caused by incorrect or outdated user inputs (e.g., grain moisture, temperature, or humidity).

• Informational Use Only:
  Fan Buddy is intended for informational and educational purposes only. It does not guarantee results.

• No Liability:
  Martin Tech LLC is not liable for any decisions, losses, damages, spoilage, or injuries resulting from the use or interpretation of this tool. All use is at your own risk.

• No  Automation Integration:
  This app is not intended for direct integration with automated fan systems, PLCs, or environmental control hardware. Fan Buddy does NOT, and was NOT designed to operate aeration equipment for you.

• No Commercial Redistribution:
  Redistribution, rebranding, resale, or modification of this tool or its code for commercial purposes is not permitted without written consent from Martin Tech LLC.

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