IS 6849 : Part 1 : 1999 /ISO 1607-1 : 1993 Positive Displacement Vacuum Pumps - Measurement of Performance Characteristics - Part 1 : Measurement of Volume Rate of Flow (Pumping Speed)

National Foreword

This Indian Standard (First Revision) which is identical withISO 1607-1 : 1980 `Positive displacement vacuum pumps - Measurementof performance characteristics - Part 1 : Measurement of volumerate of flow (pumping speed)' issued by the InternationalOrganization for Standardization (ISO) was adopted by the Bureau ofIndian Standards on the recommendation of the Chemical EngineeringPlants and Related Equipment Sectional Committee (HMD 17) andapproval of the Heavy Mechanical Engineering Division Council.

This standard was first issued in 1973 as `Methods ofmeasurement of the performance characteristics ofpositive-displacement vacuum pumps : Part 1 Measurement of thevolume rate of flow (pumping speed). Consequent upon thepublication of ISO 1607-1 : 1980, this standard (including itstitle) has been revised by adopting ISO 1607-1 : 1980, to bring itin alignment with international practices.