FAQ sur les capteurs de force

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PCB^{^®} fabrique des capteurs utilisés par les ingénieurs concepteurs et les professionnels de la maintenance prédictive pour tester et mesurer les vibrations, la pression, la force, l’acoustique, les charges et les chocs dans la recherche et développement et les applications industrielles.

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+33 1 69 33 19 60

3425 Walden Avenue
Depew, NY 14043

Sensorline^SM
716.684.0001

info@pcb.com

+33 1 69 33 19 60

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3425 Walden Avenue
Depew, NY 14043

Sensorline^SM
716.684.0001

info@pcb.com

+33 1 69 33 19 60

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Capteur de force à quartz FAQ

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Is a quartz force sensor the same thing as a load cell? Can quartz force sensors be used interchangeably with strain gauge load cells for common weighing applications? What are the benefits and features of piezoelectric quartz force sensors compared to strain gages? Why do ring force sensors require static pre-load and how is this accomplished? What is the rise time of a quartz force sensor? Why is quartz a superior crystal compared to ceramic materials for use in PE force sensors? Why do some quartz force sensors measure only compression while others measure both tension and compression? What is the difference between a force ring and force link? Why is the tension range for the 208 and 218 series only 500 lbs., while the compression range continues up to 5000? Why doesn’t an impact force sensor measure 1 lb of force when 1 lb is dropped on the sensor from any height? There are four ICP® force sensors (208C03, 201B03, 200B03 and 221B03) all with the same sensitivity of 10 mV/lb and range of 500 lbs. How do you determine which one is best suited for your application? Why do most ICP® quartz force sensors have very long discharge time constants (DTC) when compared to ICP® accelerometers and pressure sensors? Why do charge mode quartz force sensors have a much larger capacity range than some ICP® force sensors? For compressive input forces, why do charge mode quartz force sensors have a negative polarity output while ICP® force sensors have a positive output? Can multiple force sensors be added together in series? What is the maximum frequency measurable with a quartz force sensor? Why should the supplied beryllium copper stud not be substituted with a steel stud for force rings? Why is the anti-friction washer supplied with force rings? When a quartz force sensor is installed between two interface surfaces, why is it important that the two surfaces be parallel? Why should off center edge loading be avoided in quartz force sensor installations? How does an impact force sensor (200C) differ from a general purpose force sensor (208C)? Why do some force sensor impact caps have curved impact surfaces and other flat (such as the 208 series curved 084A03 versus 084M02 caps)? How are quartz force sensors calibrated? What is used as a reference standard? What is the smallest amount of force a quartz force sensor can measure? What is the accuracy of piezoelectric force sensors? What is discharge time constant (DTC) and how does it limit the types of measurements ICP® force sensors can make? Can you rely on the quartz force sensor output when you are using a DC coupled ICP® signal conditioner to monitor a step input? What rules apply for measuring signals with different waveform shapes? What is the DTC of a charge mode force sensor? Does the ICP® signal conditioning have any effect on DTC? Does the oscilloscope, chart recorder or data acquisition system affect DTC? What questions should you ask yourself when selecting the proper signal conditioning? Which ICP® signal conditioner model should you use with a quartz force sensor to permit static calibration and low frequency measurements? What is zero-clamp and why is it important for some applications? How can a charge mode quartz force sensor be used in repetitive pulse applications?

Capteur de force à quartz FAQ

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