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Agrowdrill Calibration Calculator

Step through this guide to set up your machine and verify your sowing rate before heading to the paddock.

1 Machine & Row Configuration
Set gate, restrictors and rate adjustment levers, then insert calibration tray and seed
Turn the calibration handle
—
Turn the handle anticlockwise — collect seed from the 5 hoses/outlets and weigh
2 Seed Type & Target Rate optional
⚠ Seed rate data not available for this model. Please refer to your operator's manual or contact Agrowplow on 1300 722 491.
3 Weigh & Calculate Actual Rate

After turning the handle the required number of times, weigh the total seed collected from 5 hoses and enter it below.

Loading calibration data…
The Small Seeds Box (SSB) is calibrated separately from the main drill. Use the same calibration factor and handle turns as your main drill configuration — pre-filled below if you have completed Step 1 on the Main Drill tab.

🔔 Low Gear is the factory default setting. Set High or Low gear by placing the drive chain on the appropriate sprockets before calibrating.
1 Gear Selection & Machine Settings
✓ Values pre-filled from your main drill configuration
2 Seed Type & Target Rate
3 Weigh & Calculate

Prime the seed rollers first, then collect from the 5 SSB hoses after the required handle turns and weigh.

ⓘ Adjusting sowing rate: Use the drive bar to make minor adjustments. If you are unable to get the seeding rate high or low enough, change the drive speed by moving the chain between the High and Low gear sprockets.
Full SSB instructions: Agrowplow calibration guide
Filed in: agrowdrill, how to

How to Calibrate the Small Seeds Box

Correct calibration of your Small Seed Box. These easy-to-follow steps will ensure your seed drill is set up correctly for precise seed distribution.

July 19, 2024 Agrowplow admin

Small Seeds Box Calibration Instructions

The below steps will aid you in calibrating the Agrowdrill Small Seeds Box.

TIP: There are a number of factors that influence sowing rates. These tables are offered as a guide only; your machine may need slightly different settings. We recommend you calibrate your machine according to the following instructions and re-check the results after a hectare with the metering system to ensure consistent and accurate results.

Tools Needed

  • Scales set up on a flat surface.
  • Calibration buckets.
  • Calculator.
  • 22mm spanner.

Calibration Steps

Step 1: Preparation

    1. Put enough seed in the small seed box to cover 5 rows of feed rollers.  
    2. Set up High or Low Gear by placing the drive chain on the appropriate sprockets

Step 2: Set Sowing Rate

  1. Refer to the Small Seed Box High/Low Calibration Chart to determine your seed rate adjustment setting based on your desired application rate and seed to be used.
  2. Adjust the seed flow rate by shifting the drive shaft to set the choke adjustment rate. Loosen the nuts at the end of the drive shaft using a 22mm spanner.
  3. Move the shaft so the washer on the seed rate scales aligns with the required setting.

Step 3: Prime the Seed Rollers

  1. Turn the calibration handle or the jockey wheel until you see seed falling down the 5 Small Seeds Box seed hoses. 

Step 4: Collect Seed

  1. Set up the calibration bucket to collect seed from the 5 feed rollers that are covered with seed. 
  2. Turn the seed rollers by the number of turns listed for your model in the calibration table for your machine. This can be found on the side of your machine or in your Agrowdrill Operators Manual.

Step 5: Calculate Sowing Rate

  1. Tare your scales with an empty calibration bucket.
  2. Weigh the collected grain in grams. 
  3. Multiply the weight in grams by your calibration factor. The Calibration Factor number can be found on the side of your machine or in your Agrowdrill Operators Manual. This gives you your current application rate as kg/Ha.

    Target Application Amount (kg / Ha) = Weight Collected (grams)  x Calibration Factor

     

    Step 6: Adjust Settings If Required.

    1. Adjust the drive bar to make minor adjustments to the sowing rate. If you are unable to get the seeding rate high or low enough, change the drive speed by moving the chain between the high and low gear sprockets. 
    2. Repeat steps 4 and 5 until the target output is achieved.

    Next article How to Calibrate the Agrowdrill AD730
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