Fluid Components International (FCI)’s ST75 Flowmeter is designed for line sizes from 0.25 to 2.0 inches (6mm to 51mm), making it a good fit for compressor gas line measurement. It provides three outputs: mass flowrate, totalized flow, and media temperature. The flowmeter design includes media temperature compensation to ensure performance under variable process and plant temperature conditions. It offers accuracy to +/-1 percent of reading and +/-0.5 percent repeatability. Its precision flow element has a no-moving-parts design that employs platinum RTD sensors embedded in equal mass thermowells with microprocessor electronics that can be calibrated to laboratory standards for CO2, as well as other gases. Operating over a flow range from 0.01 to 559 SCFM (0.01 to 950 NCMH), depending on line size, the flowmeter is also a good fit for low-flow and high-flow applications. For variable process conditions, the ST75 is factory preset to a turndown range at 10-to-1 to 100-to-1. It offers fully scaleable 4-20mA and 0-10V outputs that are user-assignable to flowrate and/or temperature and a 0-1kHz pulse output of total flow. – fluidcomponents.com