Ruggedised, compact, State-of-the-art Micro-controller based system. 16 x 2 LCD Display. Accepts 4-20mA Inputs for Flow, Inlet Temperature and Outlet Temperature. LED Indications for Serial Communication. Programmable Flow Rate Span and Serial Rs485 parameters from keyboard. Password protection for programming. RS485 with Modbus RTU protocol. Calculate and Displays Instantaneous Net Heat, Temperatures and Flow. Totaliser Display for Net Heat and Volumetric Flow.