目前国内砼构件行业及商品砼搅拌站配料称量系统中,使用较多的是以自动平衡电桥为基础的模拟式电子秤,上海华东电子仪器厂生产的DCZ-1型电子秤是其代表。这种秤的设计年代早、技术陈旧。主要存在下列缺点:1.结构复杂维修保养困难。由于内部采用大量机械部件,容易磨损需经常清洗、润滑,维修保养工作量大;2.工作可靠性差,机械部件的磨损,松动和缺少必要的清洗润滑都会使指示不准。尤其是内部采用裸露的滑线电阻盘和银 At present, in China’s component industry and commodity weighing plant’s batching weighing system, the most commonly used is the analog electronic scale based on the automatic balance bridge. The DCZ-1 electronic scale produced by Shanghai Huadong Electronic Instrument Factory is the representative. . This scale was designed early and outdated. The main disadvantages are as follows: 1. The complex structure is difficult to maintain. Due to the internal use of a large number of mechanical parts, easy to wear often need cleaning, lubrication, maintenance and repair workload; 2. Poor work reliability, mechanical parts wear, loose and lack of necessary cleaning lubrication will make the instructions not allowed. In particular, the use of exposed slick wire resistors and silver