Historical
ASTM D7759/D7759M-14
Standard Guide for Nuclear Surface Moisture and Density Gauge Calibration
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 and reporting estimates of uncertainties in measurements made with gauges that have undergone calibration or verification.
1.7 All observed and calculated values shall confirm to the guide for significant digits and rounding established in Practice D6026.
1.8 Units—The values stated in either SI units or inch pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
Content Provider
ASTM International [astm]
