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Air Cap Pressure
Air cap pressure is air pressure inside
the air cap of the spray gun. Also see -> Gun Inlet Pressure
Air Circulation System
With
the SATAjet 2000, SATAjet 2000 DIGITAL 2, SATAjet RP and SATAjet RP DIGITAL
2, the fluid tip is equipped with the patented* SATA air
circulation system.
Air Consumption and Gun Inlet Pressure
See chart outlining the most important
adjustment parameters.
Atomization Pressure
-> Air Cap Pressure
CE Marking
CE stands for “European Community”. The CE
marking affirms that the product conforms to the legal provisions of the
European Community; i.e. Machine Guideline 98/37/EG.
Compliance
-> Compliant Paint Spray
Guns
Compliant Paint Spray Guns
Paint guns that achieve a -> transfer
efficiency higher than 65%, but are not HVLP guns are called “compliant” guns.
With these spray guns, the air cap pressure is considerably higher than 10 psi.
Consequently they are actually -> HP (high pressure) spray guns. However, due
to their relatively high -> transfer efficiency, they are permitted in many
countries worldwide (-> VOC).
SATA compliant guns bear the designation “RP” (-> RP
Technology). These models include, the SATAjet RP, SATAjet RP DIGITAL 2, SATAjet
K3 RP, SATAjet K3 RP DIGITAL, SATA Spray-Master RP, SATA KLC RP, SATA LM 2000 B
RP, SATA LM 2000 K RP and SATA LM 2000 H RP.
Compressed air quality
Air composition regarding oil, dust and
water content.
The standard DIN ISO 8573-1 defines the compressed air quality
categories with regard to:
Oil content
Definition of the remaining quantity of aerosols and
hydrocarbons the compressed air may contain.
Particle size and density
Definition of size and concentration of solid particles
compressed air may still contain.
Dew point under pressure
Definition of the temperature to which the compressed air may
be cooled down without condensation of the steam contained in it. The dew point
under pressure varies with the air pressure.
Dynamic Inlet Pressure
-> Gun Inlet Pressure
Gravity flow cup principle/system
The gravity flow cup principle is an approved system to feed the paint spray guns with paint material. It provides an even material flow during the paint job and consequently best color match.
Gun Inlet Pressure
Precise adjustment of spray gun inlet
pressure is essential for a perfect finish. Failure to follow the paint
manufacturers recommendations (-> Paint Application Charts) usually results
in color matching problems. The correct inlet pressure is measured with a gauge
and adjusted by an air micrometer. Ensure that the trigger is pulled during the
adjustment to measure dynamic inlet pressure.
SATA offers the top class SATAjet 2000 HVLP,
SATAjet RP and SATAjet K3 models exclusively
with a digital pressure gauge integrated in the gun body handle. Pressure
adjustment is achieved with the gun micrometer. As a result, these guns are 20%
shorter and 20% lighter than conventional guns using an external air micrometer
with gauge.
In order to achieve adequately high inlet pressure, sufficient
air must be available as well. Air consumption varies considerably from gun to
gun (-> Air Consumption and Gun Inlet Pressure).
HD Conventional High Pressure Technology
-
Classic method of spray-painting for the highest finish
requirements.
-
Dynamic inlet pressure and atomization pressure are more or
less identical.
-
Varies from 43 – 58 psi (3.5-4 bars) according to type of
spray gun. Extremely fine atomization and great surface coverage. Due to
modern nozzle technology, many high-pressure guns achieve more than 65%
transfer efficiency. The higher dynamic energy compared to HVLP technology
often keeps the transfer efficiency considerably below those achieved with
HVLP guns. This is due in particular to particle bounce back from the object
and increased over spray.
-
All-inclusive application fields and various specialized work
in industrial trades characterize this reliable
technology.
Health Risks from Organic Solvent, Isocyanates and Particles
See Link:
HP (High Pressure) Paint Spray Guns
-
Classic spray-painting technology for the highest finish
requirements. Extremely fine atomization combined with high surface coating
potential.
-
Air cap pressure is about 7 – 15 psi (0.5-1 bar) below the
-> Gun Inlet Pressure. Depending on the type of gun, it amounts to 43 – 58
psi (3.5-4 bars). The higher dynamic energy compared to HVLP technology causes
particle bounce back from the object and higher over spray emissions. Only
-> transfer efficiency considerably less than achieved with HVLP guns can
be obtained.
-
-
All-inclusive application fields and various specialized work
in industrial trades characterize this reliable technology.
-
However, VOC legislation more or less limits the use of these
spray guns in some countries.
HVLP
HVLP = High Volume Low Pressure - low spray pressure technology.
Inlet Pressure
See Air Consumption
ISO
International Standards Organization. DIN
EN ISO 9001 is a model for quality assurance and quality management
documentation in design, development, production, assembly and
maintenance.
NIOSH
National
Institute for Occupational
Safety and Health - the United States testing
authority for worker health protection equipment.
Paint Application Charts
These paint application lists provide a
guide for spray gun type and nozzle sizes recommended by the paint industry.
They also provide the correct adjustments for the material in order to achieve a
perfect finish.
QCC - Quick Cup Connector
The patented Quick Cup Connector (US.Pat. 6,877,677)
- eases cleaning and changing of the cup - mounted with 1/4 turn
SAL - SATA authentication label
 You have purchased a new product and would
like to check the product authentification code ? The holographic authentication
label ensures that you purchased an Original-SATA-Product.
This security label is available on spray guns, respirators and
compressed air filters.
Separation degree (Filter separation degree)
The filter separation degree η indicates the difference in concentration of
the dirt particles before and after the filter. It is often called efficiency
degree as well. The filter separation degree η is an indication for the filter
efficiency. The indication always refers to the minimum particle size [ µm
] the filter is capable of separating.
K1 = Dirt particle concentration before the filter.
K2 = Dirt particle concentration after the filter.
η = Filter separation degree [ % ]
η =100- (100*K1/K2)
Silicone
Plastics based on a silicon-oxygen
structure.
Silicone and silicon-based substances have various fields of
application in technology and chemistry.
Besides industrial use, the sector of construction coatings
appreciates aquaeous dispersions of silicone resins (silicone emulsions)
for the application of water repellent finishing on
walls.
Silicone-based substances change the surface tension. Even very
small silicone particles can cause considerable coating flaws (silicone
craters). Therefore, silicone-based substances (e.g. gloves, oil etc.) must
never be used in coating areas.
Spot and Smart Repair
Repair of minor damage in the car
refinishing area. In this case, the SATA minijet is the ideal paint spray gun.
Special SR (Spot Repair) nozzle sets featuring a wider fan, allow touch-up work
on extremely small surfaces without any edge zones.
T.E.C. Transfer Efficiency Control
A version of the “W 400” spray gun from Iwata
is a conventional non-HVLP gun with a transfer efficiency of > 65%.
Contrary to advertising appearing in some countries, many paint guns with HVLP
technology achieve transfer efficiency considerably above that obtained with the
W 400 T.E. C.
Trans Tech
New version of conventional non-HVLP spray
guns from the DeVilbiss Company. The term implies a transfer efficiency of >
65%.
Transfer Efficiency
The transfer efficiency (often referred to as the transfer
rate) describes the relationship between the solids content of the material
sprayed and that actually deposited on the surface of the object. Transfer
efficiency is determined by the following formula:
Transfer efficiency [%] = Solid content deposited on the
object [g] / Solid content sprayed [g] x 100 [%]
Spray guns with high transfer efficiency allow a profitable low
waste surface coating process that helps protect the environment.
Transfer efficiency is a guideline influenced by a variety of
factors.
Simply mentioning the transfer efficiency of a spray gun is not
sufficient to describe its advantages that depend on a number of variable
factors:
Currently it is not possible to make
direct comparisons of transfer efficiency data provided by spray gun
manufacturers in order to draw conclusions of the advantages of a particular
spray gun. An exact comparison of different spray guns is possible only by
conducting comparable measurements on the same test equipment with comparable
parameters. The surface finish obtained must also be taken into consideration
with these parameters.
A basis for determining transfer
efficiency may be found in VDMA Directive 24 366 and the European Standard Draft
prEN 13966-1.
Viscosity
Material viscosity is the time (in seconds)
it takes the material to completely flow out of a standardized container. There
are different measuring methods available. Please find the corresponding chart
attached.
VOC
VOC means Volatile
Organic C ompounds; i.e.
organic solvents.
These solvents like many other substances trigger the formation
of ground level ozone in combination with solar radiation.
VOC guidelines established by the European Community (EU) are
intended to contribute to reducing solvent emissions. These guidelines will be
valid beginning November 1, 2004 for new shops and November 1, 2007 for all
companies. Meanwhile, the VOC Guidelines have been incorporated into national
law in most EU member states.
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