ISO 5167-5:2016规定了当锥形仪表插入导管运行的管道中时，使用（安装和操作条件）的几何形状和使用方法，以确定在管道中流动的流体的流量。 由于未校准的锥形计的不确定度对于特定应用可能太高，所以根据第7条可能会认为校准流量计是至关重要的。 ISO 5167-5:2016还提供计算流量的背景信息，并结合ISO 5167-1中给出的要求。 ISO 5167-5:2016仅适用于流量在整个测量部分保持亚音速的流量计，其中流体可以被认为是单相的锥计。未校准的锥形仪只能在管尺寸，粗糙度，ν和雷诺数的规定范围内使用。 ISO 5167的这一部分不适用于脉动流的测量。在不超过50毫米或超过500毫米的管道中，或管道雷诺数低于8×104或大于1,2×107的管道中，不包括未校准锥度计的使用。 锥形仪是一种主要的装置，它包括一个圆锥形的限制装置，同心地保持在管子的中心，锥体的鼻子上游。锥体设计符合

ISO 5167-5:2016 specifies the geometry and method of use (installation and operating conditions) of cone meters when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit. As the uncertainty of an uncalibrated cone meter might be too high for a particular application, it might be deemed essential to calibrate the flow meter in accordance with Clause 7. ISO 5167-5:2016 also provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ISO 5167‑1. ISO 5167-5:2016 is applicable only to cone meters in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. Uncalibrated cone meters can only be used within specified limits of pipe size, roughness, β, and Reynolds number. This part of ISO 5167 is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated cone meters in pipes sized less than 50 mm or more than 500 mm, or where the pipe Reynolds numbers are below 8 × 104 or greater than 1,2 × 107. A cone meter is a primary device which consists of a cone-shaped restriction held concentrically in the centre of the pipe with the nose of the cone upstream. The design of cone meter defined in this part of ISO 5167 has one or more upstream pressure tappings in the wall, and a downstream pressure tapping positioned in the back face of the cone with the connection to a differential pressure transmitter being a hole through the cone to the support bar, and then up through the support bar. Alternative designs of cone meters are available; however, at the time of writing, there is insufficient data to fully characterize these devices, and therefore, these meters shall be calibrated in accordance with Clause 7.