Droplet Calculators

Droplet spectrum, or spray quality, is a crucial component of successful applications. Droplets that are too small may not reach the target and may drift. Droplet that are too large may not give adequate coverage.

After determining an appropriate tip or orifice for an application, use the spray quality models (spreadsheets) to calculate an approximate droplet spectrum. There are models for CP-03’s, CP-07/09/s and CP-11TT’s flat fan tips. Enter the flat fan tip or orifice size, tip or deflector angle, pressure and airspeed. When using the models for the 40° and 80° flat fan tips, the default nozzle angle is 8° due to the built-in down angle of the nozzle body. With the CP® Swivel, CP-11TT’s can be angled down in 15° increments. This means 8° plus 15° (23° angle), 8° plus 30° (38° angle), etc. The default angle for CP® straight stream tips for the CP-11TT is 0°.

The droplet spectrum will be automatically calculated and appear in the lines below the boxes. Experiment with the values entered in order to develop an understanding of the relationships among these factors and droplet size.

Boom configuration, orifice/deflector condition and many other factors may impact how close actual spray quality comes to that indicated in the model. It is extremely important that aircraft be pattern tested to verify deposition, droplet spectrum and to identify any problems affecting the swath.

For Fixed-Wing Aircraft:
For Rotary-Wing Aircraft: