PCB Test & Measurement Seite 75

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For Additional Specification Information Visit www pcb com PCB PIEZOTRONICS INC 716 684 0001 Fax 716 685 3886 73 Highlights Rugged and durable High stiffness Very repeatable Wide dynamic range Fast rise time High useable frequency range Quartz piezoelectric force and strain sensors are durable measurement devices which possess exceptional characteristics for the measurement of dynamic force and strain events Typical measurements include dynamic and quasi static forces as encountered during actuation compression impact impulse reaction and tension Since the measurement signal generated by a quartz sensor will decay over time long term static force measurements are not feasable However short term or quasi static measurements are possible within certain time limits depending upon the sensor and signal conditioning used Due to this limitation it is not practical to use quartz force sensors in weighing applications where strain gage type load cell is best suited For dynamic force applications however quartz force sensors offer many advantages and several unique characteristics that make them ideal choice for many dynamic force measurement requirements Dynamic Force and Strain Sensors Applications Crash Testing Drop Testing FatigueTesting Fracture Testing Press Monitoring Stiffness nearly that of solid steel 11x106 psi modulus of elasticity Durability of solid state construction Measure small force fluctuations under large static loads Long term stability of quartz for repeatable uniform measurements Small size fraction of the size of strain gage based force sensors High frequency response accurate capture of short duration impulse events Tipsfrom Techs Why Piezoelectric Force Sensors 5 T Mcatalog 2011 Seite 65 82 A4 F G500 21 04 11 15 36 Seite 73