HNPM mzr-2542

Max Capacity: 9 ml/min

Max Pressure: 1.5 bar

Max Viscosity: 1000 mPas

Temperature Range: -20 to +60 °C 

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HNP Mikrosysteme Micro Annular Gear Pump HNPM mzr-2542 Modular Pump Series High Precision Discrete Dosing Pump. 

HNPM mzr-2542 suitable for dispensing and metering agressive and corrosive liquids. 

The HNP Mikrosysteme HNPM mzr-2542 micro annular gear pump of the modular series is equipped with oxide ceramic bearings, the material configuration of the pump body as well as of the rotors can be individually selected. Depending on the nature of the delivered liquid, a choice of different resistant components allows a customized configuration. The rotors are available in ZrO2-ceramics or in tungsten carbide. Alloy C22 and PEEK™ are the different housing options.

Advantages of the HNPM mzr-2542 Micro Annular Gear Pump 

  • Chemically inert materials -pump components in ceramics, tungsten carbide, alloy C22, alloy C276, PEEK™
  • High dosage precision -precision CV 1% at low volumes
  • Long service life -wear-resistant, ultra hard materials
  • Compact dimensions -length 90 mm, diameter 18 mm
  • Dynamic smart drive and control – DC precision motor with integrated encoder
  • Low pulsation delivery, low shear stress – rotary micro annular gear technology, no valves

Applications for the HNPM mzr-2542 

  • Analytical technology
  • Biotechnology
  • Microreaction technology
  • Laboratory automation


Flow rate 0.15 – 9 ml/min (min. 0.0015 ml/min *)
Viscosity range 0.3 – 100 mPas (max. 1,000 mPas *)
Precision CV 1 % (Coefficient of Variation CV)
Velocity range 100 – 6000 rpm (min. 1 rpm *)
Fluid connection slip fittings with outside diameter 2 mm optional: manifold assembly M2.1
Wetted parts Alloy C22 (2.4602), optional: PEEK™; shaft ZrO2-ceramics; rotors partially stabilized ZrO2, epoxy resin; shaft seal: graphite-reinforced PTFE, alloy C276; static seals: FFPM, optional: FPM, EPDM
Motor DC-motor with graphite brushes, assigned power rating 4.5 W, nominal voltage 24 V, digital magnet encoder 32 counts per turn
Dimensions (L x W x H) Ø 18 mm, length 90 mm
Weight 65 g
Electrical connection 10-pole connector
Differential pressure range 0 – 3 bar
Maximum inlet pressure 1 bar
Operating temperature range -20 … +60 °C
Displacement volume 1.5 µl
Smallest dosage volume 0.25 µl
Remark * depending on accessories,
Customized solutions on request

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 Thomson Process Equipment and Engineering Ltd – the Irish Agent for HNP Mikrosysteme. Actual performance may vary.
Specifications are subject to change without notice.



HNPM mzr-2542 Modular Series Pump Accessories

Reduction gear



reduction gear unit,

reduces pump speed,

stabilizes motor speed in low RPM-range, increases drive torque


Programmable controller S-ND


for micro annular gear pumps from the low pressure series and mzr-xx42,

programmable controller for continuous and discrete dosing


Controller S-KG


for micro annular gear pumps from the low pressure series and mzr-xx42,

4-Q-DC controller for continuous dosing


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