Engineers who need to reduce the energy cost of air compressor systems will find the ST50 airflow meter from FCI - Fluid Components International helps accurately measure compressed air and detect system inefficiencies or leaks. Its installation in large facilities with multiple air compressors allows the operators to compare compressor usage and adjust them for optimum efficiencies. The use of mass flowmeters at the point of compressed air output helps ensure peak performance at a given flow rate. Comparing the performance of multiple air compressors is useful in predictive maintenance applications where higher flow rates may indicate leaking valves or seals in one unit versus other units operating under similar conditions. Its flow range can be field-configured in either standard mass flow or volumetric engineering units. It has dual analog outputs, 4-20 mA and 0-10 Vdc, which are field assignable as flow rate or temperature and an RS232C I/O port. 800/854-1993; www.fluidcomponents.com.