Sprayer calibration calculator
Sprayer output depends on speed, nozzle spacing and nozzle flow. Change any one and the rate changes with it.
L/ha
km/h
L/min
Nozzle output required
1.6667L/min
- Nozzles on the boom
- 48
- Total boom flow
- 80.00 L/min
- Rate your measured nozzle gives
- 192.00 L/ha
- Error against target
- -4.00 %
- Speed to hit the target with that nozzle
- 9.60 km/h
- Work rate
- 24.00 ha/h
Show the working
- Target water rate = 200
- Forward speed = 10
- Nozzle spacing = 50
- Boom width = 24
- Measured nozzle output = 1.6
- Nozzle output required = 200 * 10 * (50/100) / 600 = 1.666 67
- Nozzles on the boom = round(24 / (50/100)) = 48
- Total boom flow = 1.666 67 * 48 = 80
- Rate your measured nozzle gives = 10 * (50/100) > 0 ? 1.6 * 600 / (10 * 50/100) : 0 = 192
- Error against target = 200 > 0 ? (192 - 200)/200*100 : 0 = -4
- Speed to hit the target with that nozzle = 200 * 50/100 > 0 ? 1.6 * 600 / (200 * 50/100) : 0 = 9.6
- Work rate = 10 * 24 / 10 = 24
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- nozzle flow in L/min = rate in L/ha x speed in km/h x spacing in m / 600
- the 600 converts hectares, hours and minutes into consistent units
Check output on several nozzles. A nozzle 10% over its rated flow is worn out and should be replaced.