RYT201D5-VV2富士电机

施耐德双电源WATSGA-100/4P           WATSGB-100/4P                                 WATSNB-63A/4P施耐德双电源WATSGA-125/4P           WATSGB-125/4P                                 WATSNB-80A/4P施耐德双电源WATSGA-160/4P           WATSGB-160/4P                                 WATSNB-100A/4P施耐德双电源WATSGA-200/4P           WATSGB-200/4P                                 WATSNB-160A/4P施耐德双电源WATSGA-250/4P           WATSGB-250/4P                                 WATSNB-250A/4P施耐德双电源WATSGA-320/4P           WATSGB-320/4P                                 WATSNB-400A/4P施耐德双电源WATSGA-400/4P           WATSGB-400/4P                                 WATSNB-630A/4P施耐德双电源WATSGA-500/4P           WATSGB-500/4P                                 WATSNB-800A/4P施耐德双电源WATSGA-630/4P           WATSGB-630/4P                                 WATSNB-1000A/4P


精度提高。早期电磁流量计精度一般为±1.5%~±2.5%。现在电磁流量计精度提高到±.5%~.1%。有的厂商已做±.2%的电磁流量计。励磁方式改变。由早使用的交流工频（5Hz）正弦波励磁，改变为低频矩形波励磁（6.25Hz）。近开发的产品则采用双频波励磁（低频矩形波6.25Hz+高频矩形波75Hz）。交流工频励磁是利用市电作为励磁电源，电源频率不稳定，在测量电极上会产生一种磁通微分噪声，使仪表零点漂移。