Clamps for FLK v2

Can someone Please advise where i can purchase compatible clamps/pulse meters to suite16mmSq cables ( & the compatibility Differences in clamps as the one i have C Cost don't register activity) for FLK v2 to monitor Consumption & Solar generation for an Off Grid system
Solar input is 4kw 48Volt to Inverters
240Volt Output
Like to purchase in Australia