Abstract: A flow meter and a temperature stabilizing cover for tie flow meter are disclosed. In some embodiments, the flow meter includes a spool member having a throughbore for fluids to pass therethrough, one or more transducers extending into the throughbore, and a cover disposed about the spool member and the one or more transducers. The cover includes a plurality of cover pieces fastened together. The cover pieces are formed of layers including an insulation layer, a radiant barrier, and an outer shell. The outer shell includes a material having a rigidity exceeding that of the insulation layer and that of the radiant barrier.