24
CALIBRATION
There are two types of calibrations that are commonly performed to ensure proper parameters
are being maintained for both formulation FLOW and atomization DROPLET spectrums.
Perform these calibrations in the order outlined in this manual.
FLOW CALIBRATION DESCRIPTION
Flow to the atomization nozzle is controlled on the Guardian 55 ES by 2 variables, pressure and
orifice size. Generally speaking, the maximum pressure potential of this unit under normal
operating conditions is approximately 80 psi which produces the greatest vacuum or siphoning.
Nozzle pressure can change if clogging occurs or belt slippage is present so it is a matter of good
practice to visually verify pressure periodically to ensure the proper atomization conditions are
met. Orifice sizes from .020” to .061” are included with this machine and depending on the
amount of atomization required will dictate which orifice to choose. Water and oil based
products may or may not use the same orifice disk to accomplish the same flow rates. Refer to
the chart below for average flow rates of both water and oil based products. Use these flow
rates in the below chart as a reference only, viscosity, temperature and nozzle pressure all can
affect flow rate.
Orifice ø
Water based formulation
Avg. flow rate Oz/minute
(mL)
Light Oil based
formulation Avg. flow
rate Oz/minute (mL)
20
1.3 (38)
1.4 (41)
25
1.9 (56)
2 (59)
30
2.5 (74)
2.6 (77)
35
3.2 (95)
3.2 (95)
40
3.8 (112)
3.8 (112)
45
4.8 (142)
4.2 (124)
51
5.8 (171)
4.6 (136)
55
6.2 (183)
4.9 (145)
61
6.9 (204)
5.4 (160)
Flow rates in chart above are based
on 80 psi nozzle pressure
