Gas Turbine Flowmeter - Nominal Diameter: DN25-DN400 Nominal Pressure: 1.0 MPa/ 1.6 MPa/ 2.5 MPa/ 4.0MPa Range Ratio: Max 40:1 (under P=101.325 KPa, T=293.15K) Accuracy: 1.5% (Standard), 1.0 (Optional) Repeatability: Better than 0.2% Explosion Proof: ExiallCT6Ga Protection: IP65 Shell Material: Aluminum Alloy/ Carbon Steel/ Stainless Steel Power Supply: 3.6V Lithum Battery Powered, External power DC18-30V Output Signal: 4-20mA, Pulse, Alarm Communication: RS485 Modbus RTU