Metal-free pump

The micro annular gear pump mzr-2942X1-cp of the modular pump series is designed as a metal-free pump. To guarantee maximum chemical resistance, the rotors and all wetted components are made of state-of-the-art materials, such as the high-performance plastic PEEK or various ceramics. All wetted components, including the sealing components, are FDA-compliant. The pump generates a low pulsation, highly precise flow featuring low shear stress. It dispenses at a high precision the lowest volumes in microliter range. The compact design with a brushless motor as well as an integrated motion controller for speed and position control are further characteristics of this pump variant. The pump is suitable for the life science and laboratory analysis sectors and for all other fields of application where low pressures and low viscosities are used for dosing or continuous flow of liquid media. For optimum cleaning, the pump is available as a special design with a flushing module.


  • Small dosage volumes, high flow rates
    smallest volume 0.5 µl – flow up to 18 ml/min
  • High dosage precision
    precision CV 1 % at low volumes
  • Integrated motion controller
    programmable motor control for speed and position control with RS-232 interface
  • Metal-free / chemical resistance
    high-performance plastics and ceramics
  • Low pulsation delivery, low shear stress
    rotary micro annular gear technology


  • Analytical instrumentation
  • Laboratory automation
  • Chemical and pharmaceutical industry
  • Life-Science
  • Food industry

Flow charts

Technical data

  • Flow rate
    0.3 – 18 ml/min
  • Smallest dosage volume
    0.5 µl
  • Displacement volume
    3 µl
  • Differential pressure range
    0 - 3 bar * (0 - 43.5 psi *)
  • Maximum inlet pressure
    1 bar (15 psi)
  • Liquid temperature range
    -20 ... +60 °C (-4 ... +140 °F)
  • Viscosity range
    0.3 – 100 mPas **
  • Precision CV
    1 % (Coefficient of variation CV)
  • Velocity range
    10 – 6,000 rpm
  • Fluid connection
    manifold assembly M2.1
  • Wetted parts
    PEEK, ceramics
    shaft seal: FPM (FDA compliant)
    static seal: FFPM (FDA compliant)
  • Motor
    brushless DC-Servomotor, 24 V; 6.4 W
  • Controller
    integrated motion controller
  • Electrical connection
    8-pole connector
  • Interface
    RS-232, input 0-10 V, 1 digital 24 V; output 1 digital programmable
  • Dimensions (L x W x H)
    approx. 85 x 35 x 35 mm (3.35 x 1.38 x 1.38 in)
  • Weight
    approx. 130 g
  • Remarks
    Customized solution on request
    * depending on media and viscosity
    ** depending on speed, media and pressure
  • Notice
    Even if single parameters are within the indicated performance range of technical data, certain parameter combinations may not be achievable. Single parameters may exceed their indicated performance range under adequate circumstances. For detailed evaluation please contact HNP Mikrosysteme. Actual performance may vary. Specifications are subject to change without notice. 
    This document is subject to change without notice.

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