FIELD: control over technological processes with use of updated differential pressure transducers. SUBSTANCE: transducer has one-piece case, separate membranes and flanges , first and second vertical pressure communication channels. These channels are located correspondingly between first and second pressure communication holes and pass horizontally over case and holder of primary measurement converter. Holder is connected to case and is positioned above pressure communication channels. Primary measurement converter generates electric signal of pressure differential. One or two membranes forming first and second technological membranes shut first and second pressure communication holes. Flanges shut off membranes, they are mounted on case for removal and replacement. Pressure transducer has flame arrester placed in one pressure communication channels as minimum and element protecting primary measurement converter against fluctuations of excessive pressure integrated with one-piece case. EFFECT: design of pressure differential transducer reliable in operation and having relatively small mass and low cost. 45 cl, 12 dwg
