PCB Test & Measurement Seite 55

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For Additional Specification Information Visit www pcb com PCB PIEZOTRONICS INC 716 684 0001 Fax 716 685 3886 53 Piezoelectric Quartz Pressure Sensors for Dynamic Pressure Measurements Highlights Fast micro second response time Resonant frequency to 500 kHz Measure small pressure changes at high static pressure levels Operating temperature range from 320 to 750 F 196 to 399 C Rugged solid state construction withstands shock and vibration to thousands of G s ICP amplified output for dirty or underwater environments can be transmitted through long ordinary coaxial cable without loss of signal strength or an increase in noise The PCB full line of piezoelectric pressure sensors are used for a variety of dynamic pressure measurements Some examples include compression pulsations surges cavitation hydraulic and pneumatic pressure fluctuations high intensity sound fluid borne noise detection shock and blast waves ballistics explosive component testing e g detonators explosive bolts closed bomb combustion studies and other dynamic pressures from 0 0001 psi to 100 000 psi 0 690 Pa to 690 MPa The ability to measure small pressure fluctuations at high static pressure levels is a unique characteristic of piezoelectric pressure sensors With ICP amplified output the sensors are well suited for continuous operation in dirty environments underwater and in field test applications across long cables Since special low noise cable and charge amplifiers are not required ICP sensor systems are substantially lower in cost per channel Because of the ICP sensor s low impedance output superior signal to noise ratio ability to drive long low cost coaxial cables they are ideal for virtually all dynamic pressure applications where sensor temperatures range from 320 to 275 F 196 to 135 C For higher temperature applications charge output sensors are available for use up to 750 F 399 C Although piezoelectric pressure sensors are primarily recommended for dynamic pressure measurements some quartz pressure sensors have long discharge time constants that extend low frequency capability to permit static calibration and measurement of quasi static pressures over a period of a few seconds Solid state construction of a piezoelectric pressure sensor allows for a wide linear measuring range such that PCB confidently provides calibrations at 100 and 10 of full scale output for most models Multiple strain gage or piezoresistive type sensors with their narrow measuring ranges would be required to make the range of measurements possible with a single quartz piezoelectric sensor Standard or specialized sensors and mounting adaptors can be provided to facilitate sensor installation in existing mounting ports To discuss specific applications or if a special pressure sensor or adaptor is required please contact PCB for assistance 4 T Mcatalog 2011 Seite 49 64 A4 F G500 21 04 11 15 30 Seite 53