... parameters 2. brownout protection 3. liquid crystal display 4.flow meter <1>The series of 8003 HART counter is ... uses liquid crystal display and keys that can display single-class flow, instantaneous flow, total volume, while output 4 to 20mA current ... Power: DC24V/12V<3>Function1, show that the instantaneous flow, accumulation of singleclasses, the total accumulation and instantaneous current value ...