Solenoid diaphragm metering pump DATA SHEET FMM20 FMM 20
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Solenoid diaphragm metering pump FMM 20 FMM 20 KPDC-P Features / Advantages The FMM 20 pump is a solenoid driven diaphragm pump which has been designed to dispense an accurate volume of 20 µl per stroke. The volume can be adjusted between approx. 5 and 25 µl thus allowing the pump to be calibrated to fit the parameters of the application. It is also possible to run the pump at 20 Hz in order to prime system. Long lifetime Over 2 Billion strokes. Adjustable dispense volume 5-25 µl This allows the pump to be calibrated. An electrical impulse 12/24V sent to the solenoid creates a magnetic field which in turn draws the diaphragm down compressing a spring. As the impulse stops the spring pushes the diaphragm up which coupled with the patented valve system creates a pumping action. Large flow range The pump can be operated between 0-20 Hz (flow rate of 0 - 30 ml/min). Flow tight in both directions At rest the pump is sealed internally for pressures up to 0.5 bar. High chemical resistance Large choice of wetted materials. Self priming Capable of pumping both liquids and gases. Quiet running Noise suppression system. The pump can be mounted in any position using either a manifold or tubing. Different connection possibilities can be seen on the last page. High repeatability Stable pump characteristics over the entire life time. Medical diagnostics Industrial dosing systems Inkjet printing Fuel cells Semi conductor industry Water analysis Others Performance Data Type FMM 20 Dispense volume Calibration range

FMM 20 Technical Data Electrical Data Hydraulic Data Nominal stroke volume (µl) Repeatability from set point (*CV) Max allowed frequency (Hz) I last max. during impulse (A) Effective continous current consumption (lrms) at 20Hz (A) Effective continous power at 20Hz (W) Stroke volume range/calibration (µl) Minimum impulse on time (ms) Flow rate (ml/min) Suction height (mWg) Protection factor Control signal (impulse) Pump description FMM 20 KP DC - P Pulsing DC signal DC-voltage EPDM valves / diaphragm PP Head Stroke volume Metering Magnetic Flodos Materials of head components Pump type Head...

Important notes General notes Accuracy The 20µl is set and measured during testing at KNF. If the pump is subject to different parameters then the stroke volume can differ. Calibration It is possible to calibrate the dispense volume to fit the specific conditions of the application by adjusting the stroke length using the calibration screw on the base of the pump between approx. 5-25 µl (allen key 1.5). Repeatability In order to achieve the best accuracy and repeatability it is important to ensure that the surrounding parameters stay constant. E.g. pressure, suction height, liquid...

Connections (available on request) Flat manifold mounting – It is possible to flange the pump straight onto a manifold using o-rings to seal the two surfaces. Hose barbs – A good option when using 3mm ID tubing. At high pressures it may be necessary to fix the tubing on with a clamping device. UNF ¼”-28 inside threads – This type of fitting is becoming very popular. As the fitting is screwed in a clamp ring is compressed creating a very good seal. Options Control module for test purposes on request available. KNF offers a wide range of accessories such as pressure control valves or...