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目前上海气象仪器厂生产的 HCJ_1型和重庆水文仪器厂生产的 SW_(40)型自记水位计在水文测站中已经广泛应用。这两种仪器均是用钢丝带动记录笔滑动的,在实际应用中常会由于因钢丝断裂而导致记录中断缺测。为了解决这个问题,我站从1978年起在上海气象仪器厂生产的 HCJ_1型自记水位计的拉紧钢丝的拉簧上,一端装一绝缘体,并在绝缘体内装一根接触丝,另一端装一铜片。并分别接上两根导线至办公室内接音响器。这样当钢丝发生事故断裂时,拉簧收缩接触丝与铜片相碰,音响器即发出警报,则可以即时更换钢丝。报警装置如图所示。重庆水文仪器厂生产
At present, HCJ_1 produced by Shanghai Meteorological Instrument Factory and SW_ (40) self-recorded water gauge produced by Chongqing Hydrological Instrument Factory have been widely used in hydrological stations. Both of these instruments use a steel wire to drive the stylus to slide. In practice, it often happens that a recording interruption is not detected due to a broken wire. In order to solve this problem, I station from 1987 onwards at the Shanghai Meteorological Instrument Factory production HCJ_1 type self-metered water level meter tension spring wire, one end with an insulator, and the insulator with a contact wire, the other end installed A copper piece. And connect two wires to the office respectively to connect the sounder. In this way, when an accidental breakage of the steel wire occurs, the tension spring contact wire collides with the copper piece, the sounder emits an alarm, and the steel wire can be instantly replaced. Alarm device as shown. Chongqing Hydrological Instrument Factory production