Differential pressure transducer for that LABCONTROL method, to the measurement of room or duct pressure. A standard resonant wire pressure transducer involves various parts including: Resonant wire Higher-pressure diaphragm Small-pressure diaphragm Magnets Metal tube Substantial facet backup plate Reduced aspect backup plate Electrical insulator Preload spring Fluid transfer port Osc... https://controltechme.com/pressure-transducers/