单相电压表 PM9861V-1 PM9861V-2 PM9861V-3 PM9861V-4 单相电流表 PM9861A-1 PM9861A-2 PM9861A-3 PM9861A-4 工频频率表 PM9801H-1 PM9801H-2 三相电压表 PM9863V-1 PM9863V-2 三相电流表 PM9863A-1 PM9863A-2 单相功率因数表 PM9861C-1 PM9861C-2 三相有功功率表 PM9863W-1 PM9863W-2 PM9863W-3 三相无功功率表 PM9863R-1 PM9863R-2 PM9863R-3 三相功率因数表 PM9863C-1 PM9863C-2 PM9863C-3 直流电流表 PM9841A-2 直流电压表 PM9841V-2 直流显示表 PM9841-2