本技术规范给出了电磁流量计的设计、选择和使用指南 用于确定点速度，以便使用速度面积测量明渠中的流量 方法 注:可将电磁流量计作为一种设备，用于对设备的速度进行定点测定 使用多点速度采样技术，通过速度面积法确定明渠流量的目的 如ISO 748所述（见参考文献[1]）。

This Technical Specification gives guidelines for the design, selection and use of electromagnetic current meters used to determine point velocity for the purpose of measuring flow in an open channel using the velocity area method. NOTE The electromagnetic current meter is acceptable as a device for making point determinations of velocity for the purposes of open channel flow determination by the velocity area method, using the multiple point velocity sampling technique described in ISO 748 (see reference [1] in the Bibliography).