Accuracy: Within 2% of actual flow when installed in accordance with published recommendations. K-Factor: 0.97. Velocity Range: 100 to 10,000 fpm (0.51-51 m/s). Wetted Materials: Elements: 6063-T5 anodized aluminum; Casings: 16 ga G90 galvanized steel. Coatings: Imron 333 polyurethane enamel.. Temperature Limits: Galvanized Casings and Aluminum Elements: 350°F (177°C) continuous operation (in air) 400°F (204°C) intermittent operation (in air). Humidity: All Airflow Stations 0 to 100% non-condensing. Process Connections: 1/4" compression fittings.