Chapter 4 – Calibration
4.2. Performing calibration (with or without
This procedure is applicable if not using load cells and to Dynamic
mode if using load cells. See Static mode calibration, page 53 for
calibration in Static mode.
The calibration factor is called the ‘T’ factor. It is the volume of
product dispensed per revolution of the floor belt roller. It is calculated
as: gate height (mm) x gate width (mm) x belt travel per revolution of
the belt roller (mm).
The product density is then used to convert the volume to weight.
1. Select the required product (see Setting up products, page 37).
2. From the Spreader Settings screen, select Weight Setup /
3. Follow the screen prompts to enter the:
lRequired application rate
lAverage working speed
Based on the information entered, the software recommends a gate
height setting. This takes account of the minimum and maximum
RPM of the belt roller. The recommended gate height is based on
the roller rotating in the middle of its RPM range, so that it allows
maximum flexibility to forward speed.