... ,ultrasonic thickness gauge,flaw detector. Model style ultrasonic flow meterTechnology features:1:operating power:isolation 8-36VDC2:current ... :display:2*10backlit LCD,displaying instant flow rate,velocity,positive,negative,net totaliser flow rate.6:operating: 4 keypad tactile ... other functions: automatic memory the positive,negative,net totaliser or flow rate and thermal energy of the last 512 ...