Armstrong International offers vortex technology for measurement of steam, liquid, and gas flows. All flow meter AVF in-line models and AVI insertion models provide multivariable measurement and mass flow output for applications in industrial and institutional environments. With turn down up to 100:1, the Vortex meter offers 1.5% of rate accuracy or better. Since the early 1970s, vortex meters have been used as a versatile, reliable measurement solution. Applicable in a variety of fluids, vortex meters can be easily installed deliver accurate measurement over a potentially impressive turndown.