e [ sain ] 脉冲pulse: [ pls ]
选型举例：
SFV-11P040/F
即输入为频率0～50Hz幅度为5V的脉冲方波，输出为4～20mA,供电为24VDC独立供电，安装外形为卡装凤凰壳体
SFV-1110/F,SFV-1112/F,SFV-1113/F,SFV-1114/F,SFV-1115/F,SFV-1119/F,
SFV-1120/F,SFV-1121/F,SFV-1122/F,SFV-1123/F,SFV-1124/F,SFV-1125/F,SFV-1129/F,
SFV-1160/F,SFV-1161/F,SFV-1163/F,SFV-1164/F,SFV-1165/F,SFV-1169/F,
SFV-1100/T,SFV-1101/T,SFV-1102/T,CCLAIR,SFV-1104/T,SFV-1105/T,SFV-1109/T,
SFV-1110/T,SFV-1111/T,SFV-1112/T,SFV-1114/T,SFV-1115/T,