The article considers the issues with amount of fuel and oil measurement process for transaction purposes and makes recommendations how to manage possible losses due to incorrect measurement results of large fuel amounts. All decisions are based on the general errors theory and legal metrology requirements. The focus of the article is on company and client control measurements, static and dynamic weighing of wagons and trains, alternative measurement methods that can be used to determine the product amount when it is questionable, errors monitoring during measuring instrument exploitation. The main criteria for determining measurement errors in direct and indirect measurements are identified. The interpretation of verification concepts of measuring instruments are analyzed, considering the accuracy class and errors obtained during verification of rail weighbridges. The interpretation of the results obtained with two different measuring instruments, taking into account the errors, accuracy class, and other characteristics of the instruments (e.g., by determining the amount with one instrument and making reference (control) measurements with the other) is provided. The recommendation consist of proposals for the stability and systematic errors analysis, reducing of systematic errors, application of corrections when weighing instruments are used in trade deals and belong to legal metrology field, according to the company and its client’s interests.

本文考虑了出于交易目的而进行的燃油和机油测量过程中的问题，并提出了如何处理由于大量燃油的错误测量结果而可能造成的损失的建议。所有决策均基于一般误差理论和法律计量要求。本文的重点是公司和客户的控制测量，货车和火车的静态和动态称重，可用于确定有问题的产品数量的替代测量方法，在测量仪器开发过程中进行错误监控。确定直接和间接测量中确定测量误差的主要标准。分析了对测量仪器验证概念的解释，考虑准确性等级和验证铁路地磅期间获得的误差。提供了对使用两种不同测量仪器获得的结果的解释，并考虑到了仪器的误差，准确度等级和其他特征（例如，通过使用一种仪器确定数量并使用另一种仪器进行参考（对照）测量） 。根据公司及其客户的利益，该建议包括有关稳定性和系统误差分析，减少系统误差，在贸易交易中使用称重工具时属于法律计量领域的校正应用的建议。提供了仪器的其他特性（例如，通过使用一种仪器确定数量，并使用另一种仪器进行参考（对照）测量）。根据公司及其客户的利益，该建议包括有关稳定性和系统误差分析，减少系统误差，在贸易交易中使用称重工具时属于法律计量领域的校正应用的建议。提供了仪器的其他特性（例如，通过使用一种仪器确定数量，并使用另一种仪器进行参考（对照）测量）。根据公司及其客户的利益，该建议包括有关稳定性和系统误差分析，减少系统误差，在贸易交易中使用称重工具时属于法律计量领域的校正应用的建议。