Which statement describes the purpose of calibration variables?

Which statement describes the purpose of calibration variables?

• A. Temperature control
• B. Speed, flow, width
• C. Humidity
• D. Pesticide label

Answer: (B)

Calibration variables are the measurements you adjust to set an applicator to the correct spray rate. The essential factors used to calibrate a sprayer are how fast you’re moving (speed), how much liquid each nozzle is delivering (flow), and how wide the spray covers in one pass (width or swath width). These three together determine how much chemical is applied per unit area, so you can match the pesticide label’s rate. The other items listed don’t define the calibration of the spray: temperature control and humidity can affect performance or drift but aren’t the quantities used to calculate the application rate, and the pesticide label provides the requirements for use rather than the operational calibration variables.

Calibration variables are the measurements you adjust to set an applicator to the correct spray rate. The essential factors used to calibrate a sprayer are how fast you’re moving (speed), how much liquid each nozzle is delivering (flow), and how wide the spray covers in one pass (width or swath width). These three together determine how much chemical is applied per unit area, so you can match the pesticide label’s rate.

The other items listed don’t define the calibration of the spray: temperature control and humidity can affect performance or drift but aren’t the quantities used to calculate the application rate, and the pesticide label provides the requirements for use rather than the operational calibration variables.