API MPMS 6.2 pdf download.Manual of Petroleum Measurement Standards Chapter 6—Metering Assemblies 4 Loading Rack Metering Systems The loading rack metering systems described in this stan- dard are those that apply to transport-type truck facilities. The rack may be of a single-product/single-meter, single- product/multi-meter, or multi-product/multi-meter design. The design of the rack should allow one meter to be proved without...