The vortex flow meter has a measuring tube through which a medium is flowable. A bluff structure is provided in measuring tube. A pressure sensor (4) is provided in an effective range of bluff structure. A deflectable measuring diaphragm (5) is provided in pressure sensor for determining pressure in medium. The optical fibers (7a,7b) are partly joined on measuring diaphragm along length. A pocket (9) of pressure sensor is deflectable by medium flowing through measuring tube such that measuring diaphragm and optical fibers are made to be deflected together with pocket. An independent claim is included for method for producing pressure sensor.
