preeflow® eco-PEN
Precision volumetric dosing unit
for highly accurate repeatable dispensing

• Pulsation-free dispensing/dosing
• Viscosity up to 7,000,000 mPas
• Consistent results, independent of ambient temperature
• Proportional dosing quantity and speed
• Valveless technology
• Extremely gentle on product
• Dispensing and dosing of most difficult products (abrasive, shear-sensitive media with solids)
• Adjustable reverse-flow prevents dripping and stringing
• Up to 30% saving on material
• Ability to select material weight or volume
• Abilitiy to dial in quantity and speed

• Electronics packaging
• SMD/SMT
• Semiconductor
• LCD/LED
• Medical
• Biological chemistry
• Laboratory
• Photovoltaic
• Optics and phototronics

• Dot-dosing
• Bead application with dispensing rate adjustable to the run speed
• Encapsulation

Operating principle
The unit is microprocessor-controlled. It is simple to operate, without submenu, and has graphic support. External signals can be connected via I/O ports to a PLC for control in automated lines. A wide variety of dosing programs with part management can be stored.

The supply pressure (with pressure sensor kit) is monitored and can be displayed digitally in bar or psi.

Error messages for filling level and motor current are also monitored (an RS232 interface is provided).

It is possible to control two eco-PEN precision-volume dosing units (as a factory-fit option).

• Quantity program
• Start/stop program
• Time program
• Teach IN function (external and navi)
• Set-volume readout in g or ml
• Dosing flow readout in ml/min and g/min
• Storage of dosing programs with part management
• Set pressure / actual pressure reading in bar/psi