These meters are based on the principal of differential pressure generated by Orifice element. Designed as per ISO5167/BS1042. On line density compensation delivers very accurate results. Various Types of IBR/Non IBR valves for isolation and drain. Various Sizes of Orifice Assemblies with or without IBR Certificate. Complete System is Engineered to suite your requirements. Highly Reliable and Repeatable System; No Moving Parts. Easy for Calibration.