CAREFUSION VIASYS Vmax Encore 22D Pulmonary function testing (PFT) system Good Working condition The Vmax Encore 22D is a pulmonary function testing (PFT) system used to measure lung performance. It’s part of the Vmax Encore 22 series by Viasys / CareFusion , designed for clinical spirometry and gas exchange analysis. Main Functions Full spirometry (FVC, FEV₁, SVC, MVV, etc.) Diffusing capacity (DLCO) measurement Lung volumes (except gas dilution method) Inspiratory/expiratory pressures , closure volumes BTPS correction and automatic quality checks SentrySuite software for data management and EMR connectivity Hardware & Design Uses a mass flow sensor and automated breathing valves High accuracy and ATS/ERS compliance Modular design with optional add-ons (e.g., impulse oscillometry)