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Viscosity Control System™
HEATED RECIRCULATING FLUID CIRCUIT MAINTAINS CONSISTENT
TEMPERATURE OF CONFORMAL COATING MATERIALS
 The Viscosity Control System maintains consistent
temperature of conformal coating fluids. The system
includes a heated recirculating fluid circuit to eliminate
viscosity changes in temperature-responsive materials.
Close-range temperature monitoring keeps the coating
process consistent and stable. Additionally, emissions of
Volatile Organic Compounds (VOCs) may be reduced,
depending on the fluid properties.
Certain factors like ambient temperature changes and
different material lots cause viscosity fluctuations. These
fluctuations affect the performance and consistency of
coatings applied to printed circuit board assemblies.
By controlling the temperature of the conformal coating
fluid circuit, viscosity fluctuations can be reduced. With
Asymtek’s Viscosity Control system, fluid is heated and
recirculated while being monitored closely and
maintained at set parameters. The system includes an
over-temperature alarm as well as precise, closed-loop
controls to maintain the process temperature at +/- 1
degree C.
Solvent usage may be reduced since heat thins the
coating material. As a result, higher film builds can be
achieved in one pass because with less solvent there
are more solids in the coating material.
For more advanced process control, the Viscosity
Control System can be combined with the Asymtek
Laser Fan Width Control option (Laser Fan Width
Control automatically verifies fluid fan width). This
combination allows users to perform process checks on
the spot and as part of pre-programmed, regular
equipment operation. Parameter settings are
automatically adjusted quickly and efficiently, without
operator intervention.
The Viscosity Control System is an option for the
Century Series Conformal Coating system, with the SC-105/104 Film Coater applicator.
Features
- Provides process control for conformal coating to ensure consistent coverage
- Eliminates viscosity changes due to ambient temperature fluctuations
- Keeps fluid at a constant
temperature, within 1 degree C
- Protects material with an overtemperature alarm
Brochure
| If you're planning to install an Asymtek
piece of equipment, please check with your Asymtek representative
for the exact dimensions. The dimensions shown in the following
brochures are subject to change between publication dates.
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