武汉星兴达液压气动设备有限公司为您提供更多齿轮泵型号,欢迎致电咨询!
双联定量齿轮泵
HGP-22A
HGP-22A-F22R
HGP-22A-F33R
HGP-22A-F44R
HGP-22A-F55R
HGP-22A-F66R
HGP-22A-F88R
HGP-22A-F99R
HGP-22A-F1111R
HGP-22A-F1212R
HGP-22A-F22L
HGP-22A-F33L
HGP-22A-F44L
HGP-22A-F55L
HGP-22A-F66L
HGP-22A-F88L
HGP-22A-F99L
HGP-22A-F1111L
HGP-22A-F1212L
HGP-22A-L22R
HGP-22A-L33R
HGP-22A-L44R
HGP-22A-L55R
HGP-22A-L66R
HGP-22A-L88R
HGP-22A-L99R
HGP-22A-L1111R
HGP-22A-L1212R
HGP-22A-L22L
HGP-22A-L33L
HGP-22A-L44L
HGP-22A-L55L
HGP-22A-L66L
HGP-22A-L88L
HGP-22A-L99L
HGP-22A-L1111L
HGP-22A-L1212L
HGP-33A
HGP-33A-F44R
HGP-33A-F66R
HGP-33A-F88R
HGP-33A-F282
HGP-33A-F1111R
HGP-33A-F1313R
HGP-33A-F1414R
HGP-33A-F1717R
HGP-33A-F1919R
HGP-33A-F2323R
HGP-33A-F2525R
HGP-33A-F2828R
HGP-33A-F3030R
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。