Lease automatic custody transfer unit

A Lease Automatic Custody Transfer unit or LACT unit measures the net volume and quality of liquid hydrocarbons. A LACT unit measures volumes in the range of of oil per day. This system provides for the automatic measurement, sampling, and transfer of oil from the lease location into a pipeline. A system of this type is applicable where larger volumes of oil are being produced and must have a pipeline available in which to connect.
References.
American Petrolum Institute (May 1991), Manual of Petroleum Measurement Standards, Chapter 6, Section 1, Lease Automatic Custody_Transfer (LACT) Systems, Second Edition. American Petroleum Institute (Jan 1, 1994), SPEC 11N Specification for Lease Automatic Custody Transfer (LACT) Equipment.