Ex-versions mzr-7259 Ex


Ex-pump for application in chemical and process technology The micro annular gear pump mzr-7259 Ex of the hermetic inert pump series in its explosion proof version is used for highly precise, low pulsation small volume dosage even of aggressive and corrosive liquids. The compact design combined with high achievable pressures are unique features. The pump is applied in the field of chemical and process technology. Thanks to the use of rotors and functional elements being made of ceramics, a magnetic coupling, and case components made out of alloy C22, this pump will take up any challenge in the chemical industry applications. Advantages Ex-certification ATEX conform with EU Directive 2014/34/EU Compact, chemically inert length 280 mm, alloy C22, SSiC, Al2O3 and ZrO2 ceramics Long service life wear-resistant ceramic components Hermetically sealed magnetic coupling (NdFeB) High dosage precision precision CV < 1 % at low volumes Low pulsation delivery, low shear stress rotary micro...


Flow rate 0.048 - 225 ml/min
Smallest dosage volume 30µl
Displacement volume 48µl
Maximum system pressure 80 bar (1160 psi) (inlet pressure + differential pressure)
Differential pressure range 0 – 40 bar (580 psi)
Viscosity range 0.3 - 100 mPas
Precision CV < 1% (Coefficient of variation CV)
Ambient temperature range 0 ... +40 (+104 °F)°C
Liquid temperature range -5 ... +60 °C (+23 ... +140 °F), -20 ... +120 °C * (-4 ... +248 °F) *
Fluid connection 1/8" NPT internal thread, lateral
Wetted parts stainless steel 316L; seals FFPM (Kalrez® Spectrum™ 6375), optional: FPM, EPDM; shaft/bearing sinter
Ex-certification CE Ex II 2G IIC c T4 X
Place of installation Ex-area zone 1, 2
Motor 500 counts per turn, type HEDL 5540
Velocity range 1 - 4,700 rpm
Cable length 10m
Weight approx. 4,900 g
Remarks * with optional heat insulation module, Customized solutions on request.

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