Originally Posted by Shabbir2009 Dear Friends, I need the following standards, do any body has these: ISO 7066: Measurement of fluid flow:- assessment of uncertainty in the calibration and use of flow measuring devices ISO 6551: Petroleum Liquids and Gases – Fidelity and Security of Dynamic Measurement Cabled Transmission of Electrical and/or Electronic Pulsed Data ISO 4124: Statistical Control of Volumetric Metering Systems ISO 9300: Measurement of Gas Flows by Means of Critical Flow - Venturi Nozzles ISO TR 3313: Measurement of Fluid Flow in Closed Conduits – Guidelines on the Effect of Flow Pulsation on Flow Measurement Instruments ISO 4185: Measurement of liquid flow in closed conduits:- Weighing method ISO 2186 Fluid flow in closed conduits connections for pressure signal transmissions between primary and secondary elements. ISO 2714 Liquid Hydrocarbons – Volumetric Measurement by Displacement Meter Systems Other Than Dispensing Pumps Please upload. Thanks Shabbir