本标准描述了以下内容:a）无压固定顶罐、浮顶罐和船用罐船中石油和石油产品液位的手动测量程序；b） 手动测量石油或石油产品中可能发现的游离水含量的程序；c） 用于在现场条件下验证计量带长度的方法，以及鲍勃重量和温度对计量带长度的影响；和d）可能影响计量基准点（基准板或基准计量点）位置的影响。在本标准中，术语“石油”将用于表示石油、石油产品或通常与石油工业有关的液体。本标准适用于里德蒸汽压小于103 kPa（15 psia）的液体的计量。 本标准不包括根据仪表读数确定储罐内容物体积的方法。储罐内容物的温度、密度、API重力、悬浮泥沙和水的测定不在本标准范围内；然而，用于这些测定的方法可以在API石油测量标准手册（MPMS）中找到。

This standard describes the following:a) the procedures for manually gauging the liquid level of petroleum and petroleum products in nonpressure fixed-roof, floating-roof tanks and marine tank vessels;b) procedures for manually gauging the level of free water that may be found with the petroleum or petroleum products;c) methods used to verify the length of gauge tapes under field conditions and the influence of bob weights and temperature on the gauge tape length; andd) influences that may affect the position of gauging reference point (either the datum plate or the reference gauge point).Throughout this standard the term petroleum will be used to denote petroleum, petroleum products, or the liquids normally associated with the petroleum industry.This standard is applicable for gauging quantities of liquids having Reid vapor pressures less than 103 kPa (15 psia).The method used to determine the volume of tank contents from gauge readings is not covered in this standard.The determination of temperature, density, API gravity, and suspended sediment and water of the tank contents are not within the scope of this standard; however, methods used for these determinations may be found in the API Manual of Petroleum Measurement Standards (MPMS).