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Naka Liquid Control Co., Ltd. > Products Information > Single-component dispensers > Micro-volume dispensing screw pump eco-PEN 300/450/600
Single-component dispensers

Micro-volume dispensing screw pumpeco-PEN 300/450/600

Micro-volume dispensing screw pump eco-PEN 300/450/600

The eco-PEN 300/450/600, developed by ViscoTec, is a new and innovative constant-volume volumetric dispenser, suitable for micro-volume dispensing of low to medium viscosity liquids in diverse applications.

  • Highly accurate micro-volume volumetric dispensing, free of the influence of change in viscosity
  • Stable dispensing independent of the initial pressure as well as excellent pressure tightness that eliminates the need for valves
  • Suck-back effect reliably stops liquids at the end of dispensing. It prevents liquids from dripping, resulting in excellent finish to pattern drawing.
  • Simple structure and easy maintenance

Specifications

  eco-PEN300 eco-PEN450 eco-PEN600
Feeding unit Luer Lock (patented) with O-ring
Input pressure 0 to 0.6 MPa (Non-thixotropic liquid)
Maximum
dosing
pressure
1.6 to 2.0 MPa
Specific
air-tightness*1
Approx. 0.2 MPa
(Reference media: Approx. 10 mPa・s/20ºC)
Wet
component
HD-POM/Stainless
Sealing High polymer PE, VisChem
Fixed sealing O-ring
(FKM for liquid seal, NBR for dust seal)
Motor 18 to 24 VDC (with encoder)
Dosing rate 0.012ml/
rotation
0.05ml/
rotation
0.14ml/
rotation
Dosing
accuracy*2
±1%
Repeatability 99% or higher
Minimum
dosage
0.001ml 0.004ml 0.015ml
Volume
flow rate *3
0.12 to 1.48
ml/min.
0.5 to 6.0
ml/min.
1.4 to 16.0
ml/min.
Weight 280g 300g 650g

*1: Maximum dosing pressure and specific air-tightness vary in proportion to the change in viscosity. Check on the manufacturer’s recommended values.
*2: Volumetric dosage dispensed as an absolute deviation per dispenser rotation. It varies according to the viscosity of medium to dose.
*3: Volume flow rate varies according to the viscosity and initial pressure.

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