Data Sheet Proportional Dosing System

seraProportional dosing systemSeybert & RahierType PDSApplication– Easy, precise distribution of wateradditives– Simple long term treatmentthrough continuous dosage– Dosage proportionalto water throughput– Variable PDS applicationsAdvantages? Compact unit,ready for installation? Leakage-free? Safe to run dry? Trouble-free assemblyand start-up? Simple handlingand operationsera - Proportional dosing system (Type PDS)Water additives, dosed accurately, flow-dependentlyProportional dosing system,Type PDS – 6.0Ask us to submita quotation to meet yourspecific requirementspds_prop_dosiersys_2s_engl 12.09.2003 7:22 Uhr Seite 1Subject to technical modifications·76/02 - GB - 08/03seraSeybert & RahierProportional dosing systemType PDSType Flow capacity1) Permiss. counterpressure Permiss. suction height Nominal width Inlet / Outlet[ l/h ] [bar ] [mWC] [DN]PDS – 1.2 0 – 1.2 10 3 5PDS – 2.0 0 – 2.0 16 3 5PDS – 2.4 0 – 2.4 10 3 5PDS – 6.0 0 – 6.0 6 3 5PDS – 7.0 0 – 7.0 10 3 5PDS – 10 0 – 10.0 6 3 5PDS – 14 0 – 14.0 3 3 5PDS – 25 0 – 25.0 3 3 8PDS – 30 0 – 30.0 2.5 3 8PDS – 35 0 – 35.0 1.5 3 8Application: Dosage of liquid additivesin water systemsThe PDS makes flow-dependent treatment of waterpossible by accurate dosage of additives.The compact unit, ready for installation, has a varietyof applications and distinguishes itself furtherby trouble-free assembly and easy start-up.How the device worksAs water flows through, pulses are sent to the dosingpumps by the contact water meter. These in turn sendliquid into the water system according to the pulses.The capacity can be varied by changing the strokelength.The main parts of the devices are directly controllablesolenoid diaphragm pumps, which have proventhemselves under the most difficult industrial operatingconditions.Installation recommendationsInstallation should be carried out in accordance withthe flow diagram i.e. a pipe disconnector should beinstalled by the customer. This pipe disconnector shouldensure that no chemicals can infiltrate the drinking watersystem in case of a disturbance in the dosing system.seraDosingFeedingCompressingSeybert & Rahier GmbH + Co. Betriebs-KGsera-Straße 1 · D-34376 ImmenhausenPhone + 49 56 73 99 90Fax + 49 56 73 99 91 55e-mail: info@sera-web.deInternet: www.sera-web.de1) The flow capacity depends on the pulse sequenceand the nominal flowContact-watermeterDosing pointDelivery limitDosing valveDosing pumpType C 202Calibration pot(supplied separately)LIDelivery limitPipe disconnector(by customer)Drinking waterSuction lineFlow diagram (sera-scope of delivery)Drum(by customer)pds_prop_dosiersys_2s_engl 11.08.2003 8:24 Uhr Seite 2