核子秤是近年开始应用于工业设备的一种非接触、动态、连续物流自动称量装置。它在散料输送设备上的应用比电子皮带秤具有更多优点。本文结合它的使用情况介绍其工作原理、测量电路、称量精度、标定方法及对其核射线的防护知识。 Nuclear scale is a non-contact, dynamic, continuous logistics automatic weighing device that has been applied to industrial equipment in recent years. It has more advantages than electronic belt scales in bulk handling equipment. This article describes its working principle, measurement circuit, weighing accuracy, calibration method and knowledge of its nuclear radiation protection.