we are the real manufacture of ultrasonic flow meter,water meter,calorimeter,ultrasonic thickness gauge,flaw detector. Model style ultrasonic ... 30 times, realize to compensate by hand or automatically,read the datas through Modbus communication protocol.8:protection level:IP579 ... cast iron,GRP,PVC,etc. that can not be welded directly.7: SEYV75-2 style special shielded twisted pair cable8: ultrasonic ...