1. Scope
1.1 This guide describes the process and objective of calibrating the density system of a nuclear surface moisture and density gauge or formulating the mathematical relationship between the density system response (the density count) of a nuclear surface moisture and density gauge and the corresponding density value of the density standard upon which the density system response was observed. 1.2 This guide describes the process and objective of calibrating the water content system of a nuclear surface moisture and density gauge or formulating the mathematical relationship between the water content system response (the water content count) of a nuclear surface moisture and density gauge and the corresponding water mass per unit volume value of the water content standard upon which the water content system response was observed. 1.3 This guide describes the process and objective of verifying the density system of a nuclear surface moisture and density gauge. 1.4 This guide describes the process and objective of verifying the water content system of a nuclear surface moisture and density gauge. 1.5 This guide describes two mathematical processes by which the gauge measurement precision may be computed or measured. 1.6 This guide offers guidance for developing estimates of uncertainties in measurements made with calibrated gauges that shall be reported with test results. 1.7 All observed and calculated values shall confirm to the guide for significant digits and rounding established in Practice D6026. 1.8 This guide 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 guide to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.9 This guide offers an organized collection of information or a series of options and does not recommend specific course of action. This document cannot replace education or experience and should be used conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a projects many unique aspects. The word Standard in the title of this document means only that the document has been approved through the ASTM consensus process.
The standard is needed to inform the user and the service facility the proper way to calibrate a nuclear surface moisture density gauge, how to verify the calibration, and the scope of different types of calibrations and calibration-related checks.
Keywords
gauge; nuclear gauge; calibration; calibration standard; calibration block; calibration constants; calibration curve; curve fit; uncertainty; verification; water content; water mass per unit volume; in-place density
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
[Back to Top]
