converting from nema to iso standard
 

converting from nema to iso standard
i have a mass flow rate of air of 698,000 lb/hr nema standard. what would the mass flow rate of air be under iso conditions? where can i look up this conversion factor?
if you are simply talking about "engineeering conversion factors" then you might be able to look under this banner in the internet, or any good reference engineering book, or any good process instrumentation industry catalog (e.g. from foxboro or invensys). if you are looking for an item with a specific reference to a nema or iso std. then you must quote the specific std. numbers of both.