本文件介绍了目前使用的不同类型的管道校准仪，也称为位移校准仪。其中包括单向和双向运行的球体（球）校准仪和活塞校准仪。它适用于在常规、减少体积和小体积模式下操作的校准仪。 本文件提供了以下方面的指南: —？每种类型的管道校准仪的设计； —？校准方法； —？每种类型的管道校准仪的安装和使用； —？管道校准仪和不同类型流量计之间的相互作用； —？用于导出测量液体体积的计算（见附录A）； —？财政和监管转移应用的预期验收标准，作为校准管道校准仪和验证流量计的指南（见附录C）。 本文件适用于在环境条件下为液体的原油和轻烃产品的管道校准仪的使用。 这些原理适用于更广泛的液体应用，包括水。这些原则也适用于低蒸汽压力、冷冻和低温产品，但与这些产品一起使用可能需要额外的指导。

This document provides descriptions of the different types of pipe provers, otherwise known as displacement provers, currently in use. These include sphere (ball) provers and piston provers operating in unidirectional and bidirectional forms. It applies to provers operated in conventional, reduced volume, and small volume modes. This document gives guidelines for: —？the design of pipe provers of each type; —？the calibration methods; —？the installation and use of pipe provers of each type; —？the interaction between pipe provers and different types of flowmeters; —？the calculations used to derive the volumes of liquid measured (see Annex？A); —？the expected acceptance criteria for fiscal and custody transfer applications, given as guidance for both the calibration of pipe provers and when proving flowmeters (see Annex？C). This document is applicable to the use of pipe provers for crude oils and light hydrocarbon products which are liquid at ambient conditions. The principles apply across applications for a wider range of liquids, including water. The principles also apply for low vapour pressure, chilled and cryogenic products, however use with these products can require additional guidance.