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TUTORIAL Introduction to Piezoelectric Sensors

TUTORIAL Introduction to Piezoelectric Sensors

Transducer Selection

Transducer Selection Criteria• How much space is available for mounting thesensor (i.e. footprint)?• What max mass can be used (beware of massloading)• What is the vibration level?• What are the frequencies of interest (max and min)?• What is the temperature range required?• Are corrosive chemicals present (industrial)?• Is physical clearance a problem?• Is the environment wet or dry?• How will the sensor be mounted (stud, wax, glue)?• What cable length will be required?• What cable jacket material will be adequate?Dytran Instruments, Inc.38

Dynamic Range• Select proper full scale amplitude from transducerspecifications• Full scale ranges normally listed for ±5 Volts out• Over range capability usually set by current sourceopen circuit output voltage (not always true)• If P.C. based data acquisition make sure board isconfigured properly for your specific measurementDytran Instruments, Inc.39

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