Standard Practice for Calibration/Verification of Linear Displacement Transducers for Geotechnical Purposes

Importancia y uso:

5.1 The displacement transducer plays an important role in geotechnical applications to measure change in dimensions of specimens.

5.2 The displacement transducer must be calibrated/verified for use in the laboratory to ensure reliable conversions of the sensor's electrical output to engineering units.

5.3 The displacement transducer should be calibrated/verified 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 transducer that differ from conditions during the last calibration/verification, and after any physical action on the transducer that might affect its response.

5.4 Displacement transducer generally has a working range within which voltage output is linearly proportional to displacement of the transducer. This procedure is applicable to the linear range of the transducer. Recommended practice is to use the displacement transducer only within its linear working range.

Note 1: Verification as in Practices E2309/E2309M should not be confused with calibration

Subcomité:

D18.95

Referida por:

D8292-20, D4729-19, D2435_D2435M-11R20, D8259_D8259M-21, D4546-21, D3080_D3080M-23, D4546-21, D2435_D2435M-11R20

Volúmen:

04.09

Número ICS:

17.020 (Metrology and measurement in general)

Palabras clave:

calibration; displacement; instrumentation; strain; transducer; verification;