The Valmetal tanker calibration calculator lets the operator know what speed to drive in order to achieve the desired manure application rate. To use the calculator, spread a test load of manure at the usual PTO speed.
- Record the time required to spread a full load.
- Measure the width of the band covered by manure.
- Enter these values into the calculator, along with the tanker capacity and the desired application rate.
- Press “Calculate” and read the ground speed.
- Operate the tractor at this speed to achieve the desired application rate.
It is important to maintain the same PTO speed as during the test load. Recheck the unloading time and band width occasionally as manure conditions change.