Low pressure pump series

Dosing pump for analytical instrumentation

The compact micro annular gear pump mzr-2921 of the low pressure series is an innovative pump concept for use in analytical instrumentation. 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. Due to its compact design small dimensions have been achieved. The pump is suitable for dosage of low viscosity liquids such as deionized water, watery solutions, methanol, solvents, oil and lubricants.

Advantages

Compact dimensions
diameter 13 mm, length 75 mm
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
Long service life
wear resistant tungsten carbide or ceramics
Low pulsation delivery, low shear stress
rotary micro annular gear technology

Applications

Analytical instrumentation
Fuel cells
Laboratory automation
In vitro diagnostics
Release agent spraying in laser processing machines

Flow charts

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Technical data

Flow rate
0.3 – 18 (min. 0.003 *) ml/min
Smallest dosage volume
0.5 µl
Displacement volume
3 µl
Differential pressure range
0 - 3 bar (44 psi)
Maximum inlet pressure
1 bar (15 psi)
Liquid temperature range
-20 ... +60 °C (-4 ... +140 °F)
Viscosity range
0.3 – 100 (max. 1,000 *) mPas
Precision CV
1 % (Coefficient of variation CV)
Velocity range
100 – 6,000 (min. 1 *) rpm
Fluid connection
slip fittings with outside diameter 2 mm optional: manifold assembly M2.1
Wetted parts
stainless steel 316L, ceramics, tungsten carbide Ni based, epoxy resin, optional: alloy C22 (2.4602), ceramics; shaft seal: graphite-reinforced PTFE, stainless steel 316, optional: alloy C276 (2.4819); static seals: FPM, optional: EPDM, FFPM
Motor
DC-motor with graphite brushes, assigned power rating 3 W, nominal voltage 18 V, digital magnet encoder 16 counts per turn
Electrical connection
10-pole connector
Dimensions (L x W x H)
Ø 13 mm, length 75 mm
Weight
approx. 50 g (manifold assembly approx. 65 g)
Remarks
* depending on accessories, 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.