Example with over-application
Inntak Speed 6.0km/h, nozzle spacing 50cm × 24 = width 12.0m, total flæði 14.8L/min, target 100L/ha
Úttak Current 123L/ha, deviation +23%, recommended 7.4km/h or 12.0L/min (0.50L/min per nozzle)
Spray Application Rate Reiknivél (Simple Sprayer Calibration)
Calculate current spray rate in L/ha and gal/acre from travel speed, spray width, and flæði.
See the gap from your target rate and the exact adjustment to make by speed or by flæði.
Get spray rate from just three required inntaks
See whether speed or flæði should be changed
Unit switching, shareable links, and saved last values
Important safety notes
Always follow the vara label, SDS, and sprayer manufacturer instructions.
This verkfæri is for simple application-rate calibration. Measure speed, width, and flæði in the svið.
Pressure-based adjustment is reference only. Re-measure actual flæði after any change.
How to use
- Choose the unit kerfi and enter travel speed, spray width, and flæði.
- Use the helper sviðs if you want to estimate speed from distance and time or width from nozzle spacing and count.
- Check the current spray rate, then enter a target rate to see the deviation and adjustment guidance.
- Copy the niðurstaða or copy a shareable link for svið use.
Sample
Svið measurement steps
- Drive a fixed distance at steady throttle and calculate speed from the elapsed time.
- Use actual spray width, not only the full boom width.
- Measure one-minute úttak under normal working conditions and enter either the total flæði or an average per nozzle.
Formulas and units
- L/ha = (600 × flæði[L/min]) ÷ (speed[km/h] × width[m])
- gal/acre = (495 × flæði[gal/min]) ÷ (speed[mph] × width[ft])
- Required speed = current speed × (current rate ÷ target rate)
- Required flæði = current flæði × (target rate ÷ current rate)
- Required pressure ≈ current pressure × (required flæði ÷ current flæði)^2
- Measured speed: km/h = distance[m] ÷ time[s] × 3.6
Algengar spurningar
My units are mixed.
You can switch between km/h and mph, m and ft, L/min and gal/min, and L/ha and gal/acre at any time. Values are converted automatically.
I have multiple nozzles.
Choose per-nozzle flæði × count to calculate total flæði automatically. If nozzle úttak varies, measure several nozzles and enter the average.
Can I calculate flæði from pressure?
This verkfæri recommends measured flæði as the main inntak. Pressure-based conversion is shown only as a reference because nozzle wear and svið conditions can change actual úttak.
Athugasemdir
- This is a simple calibration verkfæri and assumes svið measurements for speed, width, and flæði.
- Spray rate changes with nozzle wear, liquid viscosity, filter cskráging, pressure fluctuation, terrain, and wheel slip.
- Set the target rate according to the label and official instructions for the crop, vara, and dilution áætlun.