Low pressure pump series mzr-2921


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


Flow rate 0.3 – 18 (min. 0.003 *)ml/min
Smallest dosage volume 0.5 µl
Displacement volume 3µl
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 manifold assembly M2.1
Wetted parts alloy C22 (2.4602), ceramics; shaft seal: graphite-reinforced PTFE, stainless steel 316L, optional:
Motor DC-motor with graphite brushes, assigned power rating 3 W, nominal voltage 18 V, digital magnet enco
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

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