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About This Item
Full Description
This procedure has been automated in a software package named RefLCCal. It is required that the computer program be used to carry out the procedure.
Reference load cell calibration is performed at least once per year, or immediately after the reference load cell fails to pass certain quality assurance checks in the R 32 software (WinFWDCal).
The reference load cell, the cables, the associated signal conditioner, and the data acquisition system are considered a system of instruments that shall be calibrated together and used together.
This procedure results in load cell calibration coefficients that are entered into the R 32 software. These factors are used in WinFWDCal to convert analog voltage readings from the reference load cell to engineering units.
Document History
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AASHTO R 33-20
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Standard Practice for Calibrating the Reference Load Cell Used for Reference Calibrations for Falling Weight Deflectometer- Most Recent
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AASHTO R 33-11 (2019)
Standard Practice for Calibrating the Reference Load Cell Used for Reference Calibrations for Falling Weight Deflectometer- Historical Version
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AASHTO R 33-03 (2008)
Standard Recommended Practice for Calibrating the Reference Load Cell Used for Reference Calibrations for Falling Weight Deflectometer- Historical Version
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AASHTO R 33-03
Standard Recommended Practice for Calibrating the Reference Load Cell Used for Reference Calibrations for Falling Weight Deflectometer- Historical Version