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多年来,许多炼油厂、油库在贮罐上安装了称重式计量仪和钢带式液位计、温度计、气动阀门等自动化仪表,其目的是为了提高贮运系统的管理水平,减轻工人的劳动强度,节省劳动力。这些仪表使用得好的单位,确实收到了效益。但是,即使是这些单位,仍然存在以下一些实际问题。 (1)由液位计或称重仪上读得的数据仍然需要查表计算才能得到油品重量或体积,这些计算,花费相当的人力和时间,特别是对那些拥有贮罐数量很大的单位。
Over the years, many refineries and oil depots have installed gauges such as weighing gauges and steel tape level gauges, thermometers and pneumatic valves on storage tanks in order to improve the management of storage and transportation systems and reduce the workload of workers Labor intensity, save labor. The well-used units of these meters did receive benefits. However, even these units still have some practical problems as follows. (1) The data read by the level gauge or the weighing instrument still needs the look-up table calculation to get the weight or volume of the oil. These calculations take considerable manpower and time, especially for those who have a large number of storage tanks unit.