Airflow Measurement - Tools & Sundries
Overview
We supply tools for airflow measurement, specifically speed (airflow meter) and pressure (dial indicating manometer) whilst drying grain, among others. These tools are essential for maintaining optimal drying conditions which ultimately is an air speed measurement tool that makes sure your fans are running fast enough.
Moreover, optimal drying is achieved by knowing you have enough air flowing through the crop heap, which can be measured using the air flow meter.
Furthermore, another guide is the pressure you are putting into your duct, which ensures you get enough airflow without overworking your drying fan.
Features - Airflow Measurement
Identify Compaction
Using airflow measurements you can find areas the air isn't getting through.
Building Pressure
Our easy to read Dial Indicating Manometer will show the number of inches of swg in your air duct ensuring you are pushing enough air for drying.
Dry With Precision
Ultimately, if you're not getting enough air through the crop, your drying process won't work efficiently. By using the Air Flow Meter, you can ensure you're doing enough.
Reduce Power Consumption
Using air speed measurement tools, you'll be informed if you can reduce your fan output by either stopping a fan or using an inverter, thereby saving power.
Know Your Tonnage
Remove the guesswork from store outputs, measure how many tons your fan is drying.
Change Your Habits
Using the Air Flow Meter, you can change the drying process as the crop drys, the airflow will improve and you can save energy.
How To use
Air Flow Meter
Simply place the meter on top of the crop and push it down lightly so the crop wraps around the base, with your fans running, take a reading from the easy to read scale where the floating disk settles.
What Air Flow Should I Be Aiming For?
If you’re drying using humidity correction (RH drying), you should be aiming for between 14-22 ft/min (4.2-6.7 m/min).
For high temperature drying, keep the air flow in the range 6-10 ft/min (1.8-3 m/min).
For ventilation for cooling, you need very little air so keep it way down the scale on 5-10 ft/min (1.5-3 m/min).

Dial Indicating Manometer
Assemble the manometer and install in the suggested location. Then you can just read the value on the dial as the tunnel is pressurised.
What Pressure Should I Be Aiming For?
For a non-stirrer store, up to 3.0m deep. 3.0 to 3.5 inches.
For a non-stirrer store, up to 3.6m deep. 3.5 to 4.0 inches.
For a stirred store drying with Relative Humidity:
Up to 3.6m deep. 2.0 to 2.5 inches.
Up to 4.2m deep. 2.5 to 3.0 inches.
Up to 4.5m deep. 3.0 to 3.5 inches.
For a stirred store drying with Temperature:
Up to 3.6m deep. 1.5 to 2.0 inches.
Up to 4.2m deep. 2.0 to 2.5 inches.
Up to 4.5m deep. 2.5 to 3.0 inches.