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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps

LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps
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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps - 1

A MEMBER OF nikkiso pumps + Systems ■ LEWA MICRFLOW-METERING PUMPS: SOLENOID OPERATED DIAPHRAGM PUMPS ■ zero leakage, low maintenance ■ pressures up to 560 bar ■ exact, reliable ■ analogous or pulse controlled ■ from 5 ml/h to 40 l/h Solenoid operated diaphragm metering pumps are a very economical solution for metering a liquid component proportionally to a variable command signal. The metering flow follows the command signal via the stroke frequency of the solenoid drive in a very wide adjustment range. In addition, the metered flow can be adapted to the requirements by adjusting the stroke length manually (ratio setter). LEWA solenoid operated diaphragm metering pumps, with five different performance sizes, cover a broad range of application. The smaller pump types are also available with non-explosion proof solenoids. These can operate against higher pressure. Adaption to different applications is possible by the two controls especially developed for this programme. Typical applications: ■ Proportional addition of fluids into variable main streams, e.g. inline blending, natural gas odorizing, injection of additives ■ Control of physical property values of main streams or high volumes with proper mixing in main control circuits, e.g. dying, viscosity, pH-value 1 © D1-501 en ە 12.2010 Subject to change without notice Օ Printed in Germany

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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps - 2

A MEMBER OF nikkiso pumps + Systems ■ LEWA MICRFLOW-METERING PUMPS: SOLENOID OPERATED DIAPHRAGM PUMPS Sound pump technology for hazardous areas Precisely working drive ۩lments All drive l驩ments operate with solenoid drive and free of play spring return. The hydraulic damping results in quiet operation. The finely scaled, linear stroke adjust-ment, as second variable, facilitates the exact setting of the metered flow and can be utilized to expand the adjustment range downwards and as ratio setter. Safely dimensioned drive solenoids The drive solenoids are built for continuous operation and...

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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps - 3

A MEMBER OF nikkiso pumps + Systems ■ LEWA MICRFLOW-METERING PUMPS: SOLENOID OPERATED DIAPHRAGM PUMPS Via the remote inputs the MAH pumps can be integrated into main control circuits or propor- tionally coupled to remote command signals. The stroke length adjustment can be utilized as additional ratio setter. The front panel contains all controls and LED display ۩lments: ■ Master switch with LED display "operation" ■ Selector switch "Remote/Internal" ■ Desired value potentiometer for the stroke frequency produced internally ■ LED display of pump stroke The control is available either for...

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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps - 4

A MEMBER OF nikkiso pumps + Systems ■ LEWA MICRFLOW-METERING PUMPS: SOLENOID OPERATED DIAPHRAGM PUMPS Performances MAH, MLM, MBH Technical data MAH, MAH Ex, MBH MAH 3 MAH 3 Ex MAH 5 MAH 5 Ex MAH 8 MAH 8 Ex MBH 8 MBH 10 Metering flow Q [l/h] 0 to 0,25 0 to 0,7 0 to 1,8 0 to 1500 0 to 2400 Operating pressure pDmin [bar] 1,0 1,0 1,0 1,0 1,0 pDmax [bar] 50 30 16 10 6 4 50 40 suction pressure pSmin [bar abs.] 1,0 1,0 1,0 1,0 1,0 pSmax [bar] 25 15 9 5 3 20 20 stroke volume (adjustable at front-side handwheel) [ml] 0 to 0,022 0 to 0,063 0 to 0,160 0 to 0,251 0 to 0,392 stroke frequency (external...

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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps - 5

A MEMBER OF NIKKIS pumps + Systems ■ LEWA MICRFLOW-METERING PUMPS: SOLENOID OPERATED DIAPHRAGM PUMPS Performance overview Control/input board Supply 230 V/50 Hz/10VA 230 V/50 Hz/10VA | 230 V/50 Hz/10 VA 24V DC 24 V DC /2,5 W Control circuit E1: potential-free contact supply voltage input resistance 8 V DC/8 mA 1 k0hm 8 V DC/8 mA 1 k0hm 24 V DC/12 mA 2 k0hm 24 V DC/12 mA 2 k0hm E1 to E4: 8 V to form a NAMUR circuit, intr. safe (EExia) IIC, PTB 00 ATEX 2210 no-load voltage U0maxDC 12, 7 V; short-circuit current IKmaxDC 21 mA E2: E3: E4: E5: E6: - - as E1 as E1 as E1 as E1 or prox. switch to...

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LEWA Microflow Metering Pumps: Solenoid Operated Diaphragm Pumps - 6

A MEMBER OF NIKKISO pumps + Systems LEWA MIORFLOW-METERING PUMPS: SOLENOID OPERATED DIAPHRAGM PUMPS Type MBH Assembly dimensions: Type MBH L B AB H [mm] [mm] [mm] [mm] Size 8 155 120 195 510 Size 10 155 120 195 510 1 B-AB Type MLM 15 and MLM 40 Assembly dimensions: Type MLM L B H [mm] [mm] [mm] Size 3 450 140 260 Size 20 450 180 260 The dimensions differ depending on the pump head fitted. 6 © D1-501 en ە 12.2010 Subject to change without notice Օ Printed in Germany

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