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Standard Practice for Calibration of Linear Displacement Sensor Systems Used to Measure Micromotion
Automaticky přeložený název:
Standardní praxe pro kalibraci lineárních posunutí senzorových systémů pro měření MicroMotion
NORMA vydána dne 1.6.2011
Označení normy: ASTM F2537-06(2011)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2011
Kód zboží: NS-54089
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
calibration, displacement, instrumentation, measurement, micromotion, sensor, transducer, Micromotion, Linear displacement, ICS Number Code 17.020 (Metrology and measurement in general)
Significance and Use |
Linear displacement sensor systems play an important role in orthopedic applications to measure micromotion during simulated use of joint prostheses. Linear displacement sensor systems must be calibrated for use in the laboratory to ensure reliable conversions of the system’s electrical output to engineering units. Linear displacement sensor systems should be calibrated before initial use, at least annually thereafter, after any change in the electronic configuration that employs the sensor, after any significant change in test conditions using the sensor that differ from conditions during the last calibration, and after any physical action on the sensor that might affect its response. Verification of sensor performance in accordance with calibration should be performed on a per use basis both before and after testing. Such verification can be done with a less accurate standard than that used for calibration, and may be done with only a few points. Linear displacement sensor systems generally have a working range within which voltage output is linearly proportional to displacement of the sensor. This procedure is applicable to the linear range of the sensor. Recommended practice is to use the linear displacement sensor system only within its linear working range. |
1. Scope |
1.1 This practice covers the procedures for calibration of linear displacement sensors and their corresponding power supply, signal conditioner, and data acquisition systems (linear displacement sensor systems) for use in measuring micromotion. It covers any sensor used to measure displacement that gives an electrical voltage output that is linearly proportional to displacement. This includes, but is not limited to, linear variable differential transformers (LVDTs) and differential variable reluctance transducers (DVRTs). 1.2 This calibration procedure is used to determine the relationship between output of the linear displacement sensor system and displacement. This relationship is used to convert readings from the linear displacement sensor system into engineering units. 1.3 This calibration procedure is also used to determine the error of the linear displacement sensor system over the range of its use. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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