is required downstream of the motor driven fluid pump 100 along with a system capability to transmit and receive signals via serial communication the serial communication protocol resides in the motor driven fluid pump 100 electronic control module 106 and can be an rs 232 rs 422 or rs 485 device once the motor driven fluid pump 100 microprocessor 108 firmware code 130 has been uploaded and the flow versus input command signal is set as described in fig6 the health monitoring and flow compensation system operates as follows a an aircraft fluid type 8 bit serial code signal is transmitted through communication protocol to the microprocessor 108 the microprocessor 108 looks up the serial code in its firmware 130 and sets corresponding fluid density and viscosity algorithms b the microprocessor 108 firmware code 130 monitors and compares the flow pressure output feedback signal being transmitted against the embedded expected signal range or tolerance for the set point variable 132 c the microprocessor 108 firmware code 130 constantly monitors fluid temperature feedback signal and motor 104 rotary speed d the microprocessor 108 firmware code 130 has embedded in it the maximum permissible speed for the set point established in variable 132 as the positive displacement pumping element 102 components wear internal leakage occurs between the discharge.