Instrument for measuring oxygen flow rate
Thread Content
So far, the flow meters we’ve encountered are all vortex flow meters; their materials vary depending on the temperature – some use Hastelloy, while others use 316/314. Is there any specific standard or other documentation that details how to choose the appropriate material for oxygen flow meters under different temperatures and pressures?
GB 50030 Code for Design of Oxygen Stations
I also checked the specifications for oxygen stations, and it seems they aren’t detailed enough either; they only mention the use of stainless steel, nickel alloys, and copper depending on the pressure level, with nothing else specified. Is there no requirement regarding temperature?
Temperature affects the allowable stress of materials. Once a material has been selected, it can be determined whether it meets the requirements based on temperature and pressure. Standards specify the properties of materials under pressure; if the temperature is high and the allowable stress is not sufficient for the intended use, a better material can be used as a substitute.