Diaphragm dosing pump FEM 1.02 / 1.09
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Diaphragm dosing pump FEM 1.02 / 1.09 DATA SHEET The FEM1.02/1.09 pumps are based on a very simple design. The 2 phase stepper motor turns an eccentric causing the diaphragm to move up and down. This vertical movement causes pressure changes in the working chamber which in combination with the inlet and outlet valves makes a pumping action. • Motor The use of a stepper motor ensures that the motor speed can be controlled very accurately giving flexibility and a high level of repeatability. • Valves Many years of experience have resulted in a valve system which work precisely over a large range of motor speeds, doesn’t trap air bubbles and can be easily cleaned. • Pump head By constructing the pump head to allow the air bubbles to escape easily it is possible to completely fill the pump with only four strokes. • Excellent repeatability • Constant results over a long period of time • Large dosing range 1:100 • High chemical resistance • Self priming • Long life > 10,000 h • Various control possibilities Areas of use • Medical diagnostics • Industrial dosing systems • Fuel cells • Semiconductor industry • Water analysis KNF also offers an electronic controller to help test the pump, details of what is possible can be found on the last page. An important option is the possibility of using a Hall Sensor to determine the position of the diaphragm thus allowing every phase of the pumping action to be individually controlled. Performance Data Pump type Flow rate (ml/min) Suction head (mWg) Pressure head (mWg)

General note This data sheet includes information about the technical characteristics of the FEM 1.02 / 1.09 pump types. More detailed information and explanations can be found in the operating instructions (www.knf.com). Motor control. The pumps are driven by a simple two phase stepper motor. All of the information required to make a controller can be found in the Electrical specifications. The pumps are tested in the factory to ensure that the flow rate specified is achieved at the nominal motor speed. Every motor comes with a connector plug , the function of the leads can be seen in the...

Basic model Flow rate at Max. suction atmos. press- head (mWg) ure (ml/min) Basic model Flow rate at Max. suction atmos. press- head (mWg) ure (ml/min) Motor protection class Motor protection class Nominal motor speed (rpm) Nominal motor speed (rpm) Dosing range Dosing range Flow range (ml/min) Flow range (ml/min) Allowed ambient temp. (°C) Allowed ambient temp. (°C) Allowed liquid temp. (°C) Allowed liquid temp (°C) Approx. Volume / Stroke (µl) Approx. Volume / Stroke (µl) 1) Depends on type of controller 1) Depends on type of controller

There are several accessories available for the FEM 1.02 / 1.09 pump series which can be used to find a solution for your fluidic application. Creating individual customer solutions is our speciality. Hall Sensor - position recognition of the diaphragm A Hall sensor can be integrated into the pump so that it is possible to monitor the position of the diaphragm. This allows the pump to be controlled in different ways: speed of the suction/exhaust stroke can be varied to prevent cavitation, the stroke volume can be split into parts for exact dosing of small quantities or the exhaust stroke...