API MPMS 5.8 pdf download Manual of Petroleum Measurement Standards Chapter 5.8 Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters 7.3.3 Valves, particularly those between the meter and prover (e.g. the stream diversion valves, drains, and vents) require leak proof shutoff, which may be provided by a double block-and-bleed valve with telltale bleed. 7.4 Electronics The UFMs electronics system, including...