Fluid-dependent customizable dosing pump

The micro annular gear pump mzr-7242 of the modular pump series is suitable for dosing and metering in low to medium pressure and viscosity ranges. To the main assets of this series belong low pulsation, high precision low volume dosage of non-lubricating liquids, compact design with smallest dimensions and low price. These pumps are suitable for dosing and dispensing deionized water, aqueous solutions, solvents as well as low to highly viscous oils, lubricants or dyes. 


  • Compact dimensions
    length 132 mm
  • High dosage precision
    precision CV 1 % at low volumes
  • Small dosage volumes, high flow rates
    smallest volume 30 µl, flow up to 288 ml/min
  • Long service life
    wear-resistant tungsten carbide
  • Low pulsation delivery, low shear stress
    rotary micro annular gear technology


  • Analytical instrumentation
  • Fuel cells
  • Biotechnology
  • Laboratory automation
  • In vitro diagnostics

Flow charts

Technical data

  • Flow rate
    4.8 - 288 ml/min
  • Smallest dosage volume
    30 µl
  • Displacement volume
    48 µl
  • Differential pressure range
    0 - 5 bar (73 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
    100 - 6,000 rpm
  • Fluid connection
    1/8" NPT internal thread, lateral
  • Wetted parts
    Pump case: stainless steel 316L, rotors: tungsten carbide Ni-based; bearing: ceramics; epoxy resin; shaft seal: graphite-reinforced PTFE, stainless steel 316L; static seals: FPM, optional: EPDM, FFPM
  • Motor
    DC-motor with graphite brushes, assigned power rating 21 W, nominal voltage 12 V, digital optical encoder 256 counts per turn, Line Driver
  • Dimensions (L x W x H)
    approx. 132 x 42 x 60 mm
  • Weight
    approx. 800 g
  • Remarks
    Customized solutions on request.
  • 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.

Show more


 Back to list