ISO 14839-2:2004规定了测量和评估配备有主动磁轴承（AMB）的旋转机械的以下两个指标的一般指南:在AMB处或附近测量的轴振动位移；以及在磁线圈或电源放大器中测量的工作电流和电压。 这两个指标都是在室内和/或现场的标称操作条件下测量的。这些指南是根据这些指标的稳态运行值以及这些稳态运行中可能发生的任何幅度变化而提出的。 ISO 14839-2:2004适用于产生或消耗额定功率大于15kW的工业旋转机械，不受尺寸或操作额定速度（即。 e、 包括涡轮压缩机、涡轮泵、蒸汽涡轮机、涡轮发电机、涡轮风扇、电驱动器和由AMB支撑的其他转子）。它建立了配备AMB的旋转机械的振动、电流和电压评估，由上述相对较大的功率容量规定，不包括涡轮分子泵、主轴和飞轮等小型转子。 ISO 14839-2:2004涵盖了配备AMB的刚性转子和配备AMB柔性转子。

ISO 14839-2:2004 sets out general guidelines for measuring and evaluating rotating machinery equipped with active magnetic bearings (AMBs) with respect to the following two indices: shaft vibratory displacement measured at or close to the AMBs; and working current and voltage measured in magnetic coils or power supply amplifiers. Both indices are measured under nominal operating conditions in house and/or on site. These guidelines are presented in terms of both steady-state running values of these indices and any magnitude changes which may occur in these steady-state operations. ISO 14839-2:2004 is applicable to industrial rotating machines generating or consuming nominal power greater than 15 kW, and is not limited by size or operational rated speed (i.e. comprising turbo-compressors, turbo-pumps, steam turbines, turbo-generators, turbo-fans, electric drives and other rotors supported by AMBs). It establishes the vibration, current and voltage evaluation of the rotating machinery equipped with AMBs, specified by a comparatively large power capacity as described above, excluding small-scale rotors such as turbo-molecular pumps, spindles and flywheels. ISO 14839-2:2004 covers both AMB-equipped rigid rotors and AMB-equipped flexible rotors.