The Series Flow Averaging transmitter is a multifunctional system transmitter designed to measure flow in very large pipes with uneven or unstable velocity distributions and/or wide temperature ranges. The Series 255 is an advanced microprocessor-based system that powers and reads data from up to 16 independent sensing points, providing large averages of flow and temperature. The 255 series continuously reads and analyzes flow and temperature data from individual channels and automatically removes from the average channels that are in an alert state or have been removed for repair or repair.