For applications requiring measurement of rapidly changing pressure levels, high frequency pressure transducers provide an effective solution. Also known as dynamic pressure transducers, they utilize a piezoresistive sensor coupled with dedicated signal processing to capture pressure fluctuations at bandwidths up to 200kHz.
Piezoresistive Pressure Sensing
At the core of high frequency pressure transducers is a piezoresistive pressure sensor made from silicon or ceramic. When pressure is applied, it causes a strain in the sensor element which results in a change of electrical resistance. This resistance variation corresponds to the input pressure level.
Wide Bandwidth Signal Conditioning
To convert the sensor's analog resistance output into a standardized electrical signal over a wide range of frequencies, specialized circuitry is employed. This allows the transducer to accurately resolve very rapid pressure changes within milliseconds.
Applications
Areas where high frequency pressure transducers excel include monitoring explosions, pump hydraulics, engine testing and more. They are commonly used in industries such as automotive, aerospace, oil & gas and marine where dynamic pressure events must be precisely characterized.
Sino-Inst High Frequency Pressure Sensors
Sino-Inst offers the SI-90 dynamic high frequency pressure sensor utilizing the above principles with bandwidths up to 200kHz. This makes it well-suited for industrial applications involving rapidly changing pressure waves, pulses or resonances.