Spraying Systems AUTOJET 1750+ User Manual

6
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1 – 100% duty cycle adjustment for PulsaJet and other electric spray nozzles.
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Oers easy to use ming modes of Fixed Spray Time; Variable Spray Time, and Repeat.
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Can control and drive up to ten (10) Spraying Systems Co.
®
electric spray nozzles
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AA10000AUH-03 PulsaJet® spray nozzles – Ten (10)
•
AA10000JJAU PulsaJet air atomizing spray nozzles – Ten (10)
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AA10000AUH-10 PulsaJet spray nozzles – Three (3)
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AA10000AUH-30 PulsaJet spray nozzles – One (1)
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AA250AUH Electric spray nozzles – Ten (10)
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Ambient temperature rangs for electric control panel:
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41°F Minimum (5°C)
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104°F Maximum (40°C)
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Dimensions: 9” (228.6 mm) x 4 1/4” (108 mm) x 10 1/2” (266.7 mm)
For Internaonal applicaons be sure that you have the correct power cord.
PRECISION SPRAY CONTROL (PSC)
The PulsaJet® automac spray nozzle is an electrically-acvated hydraulic, atomizing nozzle. This nozzle sprays the
product in a controlled way using a PWM algorithm to control the sprayed amount without aecng the spray angle.
PWM is the fundamental control principle that allows a signicant reducon in ow by regulang the relaonship
between the on/o mes that the nozzle operates.
Short pulses of on-me and longer pulses of o-me produce a spray paern that appears connuous, but actually
reduces the overall ow delivered to the target surface. This provides beer ow control with larger spray ps that are
less prone to clogging. The droplet size is aected by the pressure of the liquid. With PSC, the droplet size and spray
angle are independent of the liquid ow because the nozzle can work at the same liquid pressure for variable liquid
ows.
PSC involves switching the spray nozzle on and o repeatedly at a controlled rate, called the modulang frequency.
The modulang frequency is the number of mes the nozzle is switched on and o in one second and is measured in
Hertz (Hz). If a spray nozzle is switched on and o 10 mes per second, the modulang frequency is 10 Hz. The me
from when the nozzle turns on to the next me the nozzle turns on is called the period, in this case 1/10th of a second.
Within a single period, the nozzle is switched on, then o. The me that the nozzle is on, divided by the total me of
the period, gives a percentage which is called the duty cycle. For example, if the period is 0.10 seconds, and the nozzle
is on for half of that me, then the duty cycle is 50%. For the same period, if
the nozzle is on for 0.08 seconds then the duty cycle is 80%. Therefore, at an
80% duty cycle, the ow will theorecally be 80% of the maximum ow rate
(= 100% ow rate) at a given pressure for the nozzle. Using PSC, the ow rate
for a spray applicaon can be easily controlled without the need to adjust the
spray pressure or spray p.

Spraying Systems AUTOJET 1750+ Specifications

General

Brand	Spraying Systems
Model	AUTOJET 1750+
Category	Control Panel
Language	English