Operator`s manual

3500 VRC Operator’s Manual

V5.00.26

October

2006

Revision M

Part No. : AM

3500V/M/SIMV5

Updated : 12/10/2006

3.3.2 - Two Tenths of a Hectare (applicable on Liquid Tank only)

1. Press the softkey pointing at “PRIME” until the “2/10 HA” speed is highlighted.

2. Use the arrow keys to enter the typical working speed while seeding.

3. Press the “EXIT” softkey to escape to the main screen. Check the bins to be tested are in the

“READY” mode.

4. Check the metering system is primed with product and ready to be caught for weighing.

5. Press and hold for three seconds the “TEST” key on the main screen and the ‘ready’ drives will

start metering for 2/10

of a hectare.

Note

?? Metering will only occur if the “FAN” alarm is disabled or the fan is operating within the low

and high alarm points.

?? The 2/10

ha test will not work on ground drive machines i.e. gearbox drive and gate actuator

drive.

Apply the formula below to calculate a new and corrected calibration factor.

Formula

new calibration factor = displayed quantity ? old calibration factor ÷ actual quantity

Example

If the bin rate was set to 50kg/ha, after a 2/10

ha test, 10kg of product should have been

metered. Assuming the “CAL SPEED” was correct during calibration (see step 3) and the metering

system is linear through its entire range.

If the metered quantity is not correct apply the formula below. Using the above example, say

11.4kg is metered instead of 10kg and 48.5pulses/kg was the product calibration factor.

Formula

new calibration factor = expected quantity ? old calibration factor ÷ actual quantity

expected quantity = 10 kg (desired quantity in kg or litres)

old calibration factor = 48.5 pulses/kg (pulses per kilo or pulses per litre)

actual quantity = 11.4 kg (pre-measured weight or volume)

new calibration factor = 10 ? 11.4 ? 48.5 pulses/kg

= 42.54 pulses/kg