电子皮带秤和用于喂料、配料的定量给料秤(短皮带秤)是在生产流程中连续动态计量和自动调节装置。其动态零点呈周期性波动,用固定的模拟量进行零位补偿难以准确调整,必然引入调零误差,因而皮带秤的皮重调零是影响精度的重要因素之一;再者,电子皮带秤的零点还随秤体有关部件、称重传感器和二次仪表元器件变化而漂移,手动调整费工费时,所以采用自动调零环节是提高电子皮带秤精度和自动化水平的重要方面。电子皮带秤的二次仪表如带有微型机,可用软件很方便地实现动态零点自动调整,没有微型机的二次仪表也可由集成电路搭成自动调零环节。在HDG-2型恒 Electronic belt scales and dosing scales (short belt scales) for feeding and batching are continuous dynamic metering and automatic adjustment devices in the production process. The dynamic zero is cyclical fluctuations, with a fixed analog zero compensation is difficult to accurately adjust the zero adjustment error will inevitably introduce, so the belt scale tare zero adjustment is one of the important factors affecting the accuracy; Furthermore, the electronic belt scale Of the zero also with the scale body parts, weighing sensors and secondary instrument components changes and drift, manual adjustment of labor-intensive time, so the use of automatic zero adjustment link is to improve the accuracy and automation of electronic belt scale an important aspect of the level. Electronic belt scale secondary instrument such as with a microcomputer, the software can easily be used to automatically adjust the dynamic zero, there is no secondary instrument secondary microcomputer can also be made by the integrated circuit auto-zero link. In HDG-2 type constant