grainboy
Member
- Location
- Bedfordshire
Not trying to be difficult, but couldn’t you drill the field, left to right.
Just a question re differing pressure at end of boom. If you have recirculating lines then surely this cannot be so ?
If you are referring to me then yes I could drill it the other way but it’s over 2 km long the way we do it and only 500m the other way. I would like to get it sorted properly if possible. @BFSfertilisers has kindly made contact but I’ve not spoken with them yet.Not trying to be difficult, but couldn’t you drill the field, left to right.
In theory pwm tech could be helpful, as it's a similar manifestation to the under/over dosing on sweeping bends.
Just thought that if the controller was aware of the pressure response curve and the angle of the boom if could theoretically adjust the pulse width to compensate.Pulse Width Modulation still requires a constant pressure to get the desired dose rates right. Each nozzle is not monitored or metered, beyond what the computer pulses are doing to the valves. PWM would work well with dribble bars, but Autostreamers would need some thought.
Plus or minus 10% is surely accurate enough for fertilizer. So why bother with ridiculously complex maths necessary if chafer bars work fine without PWM?Just thought that if the controller was aware of the pressure response curve and the angle of the boom if could theoretically adjust the pulse width to compensate.
Have you ever observed any signs of across-boom variation on chem/fert, as your boom width/rolling hills would be most susceptible? Effect should be more apparent at lower pressures.
Oh, I agree. Just a winter's evening thought exercise. Slightly ironic, though, when hearing how much spinner variation there is unseen when compared to liquid.Plus or minus 10% is surely accurate enough for fertilizer. So why bother with ridiculously complex maths necessary if chafer bars work fine without PWM?
Just thought that if the controller was aware of the pressure response curve and the angle of the boom if could theoretically adjust the pulse width to compensate.
Have you ever observed any signs of across-boom variation on chem/fert, as your boom width/rolling hills would be most susceptible? Effect should be more apparent at lower pressures.