IEC 61557的这一部分规定了将符合IEC 61557相应部分的几种测量功能或测试、测量或监控方法组合到一个设备中的测量设备的要求。 将IEC 61557各部分涵盖的测量功能或测试、测量或监控方法与IEC 61557各部分未涵盖的功能或方法相结合的测量设备也在本文件的范围内。

This part of IEC 61557 specifies the requirements for measuring equipment that combines several measuring functions or methods of testing, measuring or monitoring, that are in accordance with the respective parts of IEC 61557, into one piece of apparatus.
Measuring equipment which combines measuring functions or methods of testing, measuring or monitoring covered by the respective parts of IEC 61557 with those not covered by the respective parts of IEC 61557 is also within the scope of this document.