Pro-Meter® VDK dispensing system0 pages

Pro-Meter® VDK
Dispensing Systems

Compact gear meter technology
delivers precise, consistent
material application.

The Nordson® Pro-Meter VDK dispensing module combines gear
metering technology with compact size to provide unmatched
precision and control in dispensing high-viscosity silicones, butyls,
epoxies and hot melt materials. The module is designed for use in
form-in-place gasketing, bonding and sealing operations.
The wrist-mountable design positions the Pro-Meter module close
to the point of application, minimizing the effects of pressure and
viscosity changes. With the Pro-Meter VDK module, you achieve
precision bead profiles, accurate shot weights and consistent gasket
sizes, realizing potential material savings.
Precise Metering
Positive-displacement, spur gear pumps are linked to an encoder
feedback servo drive within the Pro-Meter VDK module. This
closed-loop control provides precise volumetric output. Spur
gear design eliminates side loads that can lead to premature wear.
External speed input reference signals allow synchronization with
automation speed providing uniform material deposition.
Nozzle Pressure Control
Typical pressure-fed systems are subject to differences between their
dynamic and static pressures, and are generally only accurate to
±10 percent. The Pro-Meter VDK gear metering system controls
material delivery by positive displacement, limiting pressure
differentials. This dispensing system is capable of ±1 percent.
Placing the gear meter close to the point of material application
minimizes variation in the nozzle pressure. Close proximity also
provides faster response time when changing flow rates and
output. Nozzle output pressure is controlled so is not affected by
system pressure drops.

Application Versatility
The Pro-Meter VDK dispensing module can be retrofitted
to existing systems to improve output control and may be
installed with new systems to meet a wide range of application
requirements.
Standard Pro-Meter VDK models have output ranges from as
low as 0-15 cc per minute with a small displacement pump and
from 0-600 cc per minute using the largest displacement pump.
Mounting configurations include direct module attachment with
a Nordson Blue Series™, Auto-Flo™ or AG900 gun, or remote
mount with a gun of choice.
Diagnostics and Options
The Pro-Meter VDK module monitors volumetric output, flow
rate and system pressure; readings are displayed on two individual
digital readouts. Separate alarm signals are generated if pressure
or output volume exceed preset limits.