HPLC · SMB · Osmometry Smartline Pneumatic Pump 1950 Powerful and reliable The Pneumatic Pump 1950, powered by compressed air, has been designed for solvent delivery in process chemistry, column packing or preparative chromatography. Benefits of the pump • Since no electrical connection is required, the Pneumatic Pump 1950 is suitable for operation in hazardous environments • The Pneumatic Pump 1950 can be configured with four different pump heads (double piston design) to fulfil a wide range of pressure and flow rate requirements • The pump heads are very easy to exchange and can optionally be equipped with an eluent cooling or heating device • The pump drive is maintenance free Application areas • Packing of HPLC columns at pressures up to 1 000 bar • Delivery of supercritical fluids such as CO2 (with mounted pump head cooling) • Metering against constant pressure The delivery flow rate depends on the compressed air supply and the back pressure of the column or system. Maximum delivery flow rate can be reached at minimum liquid pressure (below 1 bar). The minimum liquid flow rate (approx. 5 ml/min) is achieved at highest back pressure. HPLC · SMB · Osmometry Technical data The diagram on the left illustrates the delivery flow rate as a function of the liquid Required compressed air 1200 pressure (back pressure) for the 100, 250 and 1000 ml pump heads. In addition, 4,2 bar the achievable flow rates or liquid pressures for HPLC columns with different hy-100 ml 4 bar [bar] draulic resistance (marked by symbols ,  and ) are shown. 8 0 0 3 bar ressure The obtainable liquid pressures and flow rates for each pump head are shown 2 bar 4 0 0 below, as well as the maximum allowed air pressure. At constant air pressure the uid p Liq 1 bar flow rate will increase, if the back pressure decreases. 0 0 1 0 0 2 0 0 3 0 0 Pneumatic Pump 1950 Flow rate [ml/min] 9 0 0 Required compressed air pressure Minimum 1 bar, maximum* 7 bar Required compressed air 250 ml Dimensions 220 x 185 x 340 mm (W x H x D) 7 bar [bar] Weight 10.2 kg 6 0 0 6 bar 5 bar ressure 4 bar 3 bar Pump head characteristics 3 0 0 uid p 2 bar Liq 1 bar Pump head type 100 ml 250 ml 500 ml 1 000 ml 0 Maximum flow rate (ml/min) 0 3 0 0 6 0 0 9 0 0 at minimum back pressure 300 500 1 000 2 000 Flow rate [ml/min] Maximum back pressure (bar) 2 1 0 Required compressed air for solvent delivery 1 000 670 250 160 1000 ml ar] 7 bar Maximum allowed air pressure (bar) 4.2* 7 7 7 [b 140 6 bar 5 bar Piston stroke (mm) 9.5 9.5 9.5 9.5 ressure 4 bar p 3 bar Piston diameter (mm) 6.35 9.525 14.29 19.05 7 0 uid 2 bar Liq Piston stroke volume per cycle (ml) 0.6 1.35 3.05 5.4 1 bar 0 Pneumatic transformation ratio 1: 250 1: 96 1: 47 1: 23 0 8 0 0 1600 2400 Flow rate [ml/min] * Using the 100 ml pump head, the external air pressure should not exceed 4.2 bar in order not to damage the pump head or pump mechanics. Ordering information Order no. Pneumatic Pump 1950 A50751 with 100 ml pump head, stainless steel A50761 with 250 ml pump head, stainless steel A50771 with 500 ml pump head, stainless steel A50781 with 1000 ml pump head, stainless steel Order no. Pump heads A4023-1 100 ml pump head, stainless steel, up to 1 000 bar, including accessory kit A4021-1 250 ml pump head, stainless steel, including accessory kit A4038-1 500 ml pump head, stainless steel, including accessory kit A4022-1 1 000 ml pump head, stainless steel, including accessory kit A2034-1 Eluent cooling or heating device, suitable for all pump heads Technical data are subject to change without notice. Visit www.knauer.net for details on complete HPLC systems, HPLC columns, and osmometers. Wissenschaftliche Gerätebau Your local distributor: Dr. Ing. Herbert Knauer GmbH Hegauer Weg 38 14163 Berlin, Germany Phone: +49 - (0)30 - 80 97 27-0 Telefax: +49 - (0)30 - 8 01 50 10 E-Mail: info@knauer.net Internet: www.knauer.net V7719-2US/3.0/03.10/www.studio-w.net