Ex-version

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 annular gear technology, no valves

Technical data

Flow rate
0.048 - 225 ml/min
Smallest dosage volume
30 µl
Displacement volume
48 µl
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
Pump case alloy C22 (DIN 2.4602), optional: stainless steel 316L; seals FFPM
(Kalrez® Spectrum™ 6375), optional: FPM, EPDM; shaft/bearing sintered silicon carbide (SSiC); bearing and wetted functional parts Al2O3 ceramics; rotors partially stabilized ZrO2, optional: tungsten carbide Ni-based
Ex-certification
CE Ex II 2G IIC c T4 X
Place of installation
Ex-area zone 1, 2
Motor
DC-motor, 24 V DC, 2 A, 53 W, encoder: 500 counts per turn, type HEDL 5540
Velocity range
1 - 4,700 rpm
Cable length
10 m
Weight
approx. 4,900 g
Remarks
* with optional heat insulation module, 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.