Fog machines spray particle size measurement

I. Experiments measuring device
i. Spray Performance Test Bench
a. Spray measuring bench
FIG 1 is the front view and measure view of the spray measuring bench, the relative size as showned.
Laser measurement device is fixed thereto spray measuring carriage. The nozzle to be test suspended
on a three-dimensional moving platform. When we want to adjust the measurement position, we can
just move the nozzle position by stepping motor, to adjust the relative position between the nozzle
and the laser.
b. Stepping Motor
Three-dimensional moving platform controlled by a microcomputer stepper motor to adjust the nozzle
position in x, y, z three directions to do the spray measurement work.
ii. Liquid supply system
a. RO filter
In this experiments, we use the pure water been filtered by the RO filter, to avoid the impurities of the
water to contaminate the nozzle system, affecting the nozzle test results.
b. Liquid pressure system 
The pressurized fluid is measured to be provided the desired source pressure by the high pressure gas.
First, we filled the measured liquid into the pressure accumulator, then injected into the high-pressure
gas therein, and to maintain a stable pressure in the testing process, in order to improve the quality of
the nozzle test. High-pressure gas can be compressed by gas cylinders or compressor.
c. Rotameter
In two kinds of liquid flow meter to measure, included Dwyer Rotameter，
measurement range is 0～1.0 GPM(gallon/min)
AALBORG Rotameter， 
measurement range is 0～500 ml/min。
iii. The desired nozzle pressure gas supply system
a. Compressor
Continuous high-pressure gas atomization of the desired tip provided by a large compressor pressure
up to 8kg / cm2.
b. Gas mass flow meter
We use AALBORG Company Model GFM471 atomizing gas flow measured the gas mass flow, 
measuring ranges is 0 ~ 100LPM (l / min) and 0 ~ 200 LPM (l / min).
iv. Pumping system
Pumping systems are under inverter control the amount of exhaust blower, discharge the spray mist
particles to outdoors, avoid its retention test area, causing the measurement error.
v. Particle size measurement analyzer
Measuring particle size analysis of the test data used in the device is Model No.SDP-ESPES2.0E-195,
RT-Sizer particle size analyzer of Malvern UK, the acquisition in August 2000, its measurement principle
and measurement method as follows: