single phase energy meter counter 1,non-reversible version: it has stop mechanism ... 430±5%ohm5. Velocity ratio 10:1,20:1,80:1,100:1,200:1,400:1,800:1,1000:16. Working frequency 6Hz7. Step ... (quantity of character wheel): 5+1(five integers with one decimal);6+1(six integers with one decimal); 9 ... -free working period (≥10years) 13. Base frame material:(1.aluminum alloy base frame: ; 2.plastic base frame: ...