Vortex Flow Meter for Steam and Compressed Air, DN15/20/32/40/50/65/80/100/125 Product Name: Vortex Flow Meter Measuring Range: 0.65–309,346 m³/h (depending on diameter) Operating Temperature: –20–350 °C Operating Pressure: 1.6–40 MPa (depending on diameter) Nominal Diameter: DN15–DN300 Accuracy Class: Class 1.0 or Class 1.5 Body Material: 1Cr18Ni9Ti (304) Stainless Steel Vortex Generator: 1Cr18Ni9Ti (304) Stainless Steel Power Supply Voltage: 24 V DC (compatible with 1 A power supply); lithium battery power supply optional Output Signal: 4–20 mA, RS-485 protocol, HART protocol Suitable Media: Steam measurement, compressed air, heat transfer oil, etc.