Craig Day: Now for the moment of truth, we'll kick this thing into gear and see if it actually is doing what it should be doing. I've actually rearranged the panel here to show us our program rate, so that's telling me what application rate I have set. The actual rate will cycle here, I've got my speed locked in here using a shortcut icon which is showing that 20 kilometres, that's in the test speed, and down here we'll have our litres per minute.
Now when you do a speed simulation test like that, this is to be done in automatic mode with the hand flashing. Currently, we're in a manual mode, so I had the sections on, I'll throw the master switch and I'll press automatic and watch the numbers line up as we go. Once a sprayer settles down, it should settle around 40 litres per minute when it hits 60 litres per hectare, and happy days, it’s managed it. So it makes sense why don’t we test the slow speed and then try the high speed just to see that we’ve got enough regulation control to achieve the 25.6 and that we’re achieving the right flow at both 2 bar and 5 bar at the extremities of our spray plan. So the next step I'll do still have our 60 litres per hectare as per the plan, I'll go back into a simulation into our toolbox and remember we can't get the point in here, we’re only going to get the round number so we’re looking for 16.2 as calculated, but we’ll just put in a speed of 16. 16 is now showing up on our iComm there.
Our flow will start high because of the position of where the regulator is at the moment and it will cycle down to somewhere around 32 to 33 litres. 32.4 is the exact figure, but remember we haven’t got the exact speed in, and away we go. It’s chasing down about to hit the 60 and we’re around, cycling between 32, yep sitting around 32 figure, so that’s pretty good. Next thing to do is why don’t we just test the high high-end so we’ve got to put the top speed in now off our spray plan, so we’re now looking here for our 25.6, 5 bar and we’re going to end up with the flow of 1.28 litres per nozzle and forty nozzles in total, so we’re looking for a figure of 51.2 in the litres per minute flow figure here. So we’ll go into toolbox again, we’ll go to speed simulation and I can only input, we might input 26. 25.6 is the figure we’re looking for, but this will give us a fair indication of what’s going to happen.
So our flow should be somewhere around 51 to 52 and a half. Start it up and the sprayer is taking a little bit of time to settle, because we’ve taken it from a 2 bar setting up to a 5 bar setting and it’s managed to achieve that there, and it’s running 51 litres on the screen, so I’m fairly happy with the setup there, that that spray unit is going to be able to achieve what we’re trying to achieve.
