目前,许多水文测站在使用上海气象仪器厂生产的HCJ_1型自记水位计时,都是将记录纸倒装在转筒上,记录笔尖从右向左运行,所绘的水位过程线是反向的。这样,为摘录与整编水位资料带来很大不便,并因此水位数据容易发生错误。为了克服上述缺点,我们作了一点改进。即将原仪器的钢丝轮重新钻孔(如图)。原钢丝轮上的穿孔在b、c位置,现在a、d位置重新钻两个小孔,这 Currently, many hydrological stations in the use of Shanghai Meteorological Instrument Factory HCJ_1 self-recording level meter, the recording paper are flip mounted on the drum, recording pen nib run from right to left, the process of drawing the water level is the reverse of. In this way, it is very inconvenient to extract and reorganize the water level data, and therefore the water level data is prone to error. In order to overcome the above shortcomings, we made some improvements. About the original instrument wire wheel re-drilling (Figure). The original wire wheel perforation in the b, c position, now a, d position to re-drill two holes, which