提供方法和流程，以监控罐车计量系统中液体罐车运动的数量损失/增益（L/G）比率、液位和/或质量差异。本文件未建立L/G比率或液位的行业标准，但在正常操作条件下，该标准将帮助用户识别任何罐车系统的L/G。它将帮助确定:比率或液位偏差、模式或趋势、液体质量。本文件还将提供基于操作和统计的工具，用于:识别系统何时表现出偏离其正常操作条件，以及识别偏离其正常操作周长原因的指南。

Provide methodologies and processes to monitor liquid tank car movements' quantity loss/gain (L/G) ratios, level, and/or quality differences for tank car measurement systems. This document does not establish an industry standard for L/G ratios or level, but under normal operating conditions the standard will assist the user to identify L/G of any tank car system. It will assist to determine:ratio or level deviations,patterns or trends,liquid quality.This document will also make available operational and statistically based tools to:identify when a system exhibits a deviation from its normal operating conditions,guidelines for identifying the causes of the deviation from its normal operating perimeters.