ISO/TR 12148:2009描述了使用ISO 6570:2001中描述的间接自动称重法（方法B）对自动碳氢化合物露点冷却镜仪器进行可追溯校准的原理和一般要求，以确定天然气或类似气体的潜在碳氢化合物液体含量。校准程序适用于输送加工天然气的下游应用中的冷镜仪器。 如果气体成分恒定，则采用ISO 6570中所述的手动称重法（方法A）: 2001年也适用。 该校准程序在上游地区的应用事先未被排除在外，但是，目前没有在上游环境中使用该程序的经验。 天然气中潜在碳氢化合物液体含量的数据是否可用于碳氢化合物露点冷却镜仪器的验证、调整或校准，取决于天然气的冷凝行为。ISO/TR 12148:2009提供了有关天然气冷凝行为的信息，以及确定与天然气冷凝行为相关的性质（如烃露点和潜在烃液体含量）的各种测量技术。

ISO/TR 12148:2009 describes the principles of, and general requirements for, the traceable calibration of automatic hydrocarbon-dew-point chilled-mirror instruments using the indirect automatic weighing method (method B) described in ISO 6570:2001 to determine the potential hydrocarbon liquid content of natural gas, or similar gas. The calibration procedure is intended for use by chilled-mirror instruments in downstream applications transferring processed natural gas. If the gas composition is constant, the manual weighing method (method A) described in ISO 6570:2001 is also applicable. The application of this calibration procedure in the upstream area is not excluded a priori, however, currently there is no experience using this procedure in an upstream environment. The usability of data on the potential hydrocarbon liquid content of natural gas for verification, adjustment or calibration of hydrocarbon-dew-point chilled-mirror instruments is based on the condensation behaviour of natural gases. ISO/TR 12148:2009 provides information on the condensation behaviour of natural gases and the various measuring techniques to determine properties, like hydrocarbon dew point and potential hydrocarbon liquid content, related to the condensation behaviour of natural gases.