A hot wire wall shear stress probe with temperature compensation was employed as the reference instrument.
It is that highly integrated reference instrument (microcalorimeter, ADR, cryocooler and cryostat) that will be examined here.
Combined measurement uncertainty of skin conductance meters was calculated by means of uncertainty of reference instrument and uncertainties due to measurement repeatability, reproducibility, resolution and environmental condition.
Additionally, PLS analysis indicated a good agreement between the predicted value from the model and the SO2 concentration from the reference instrument of the pilot plant.
Lower uncertainties also occur using a black-and-white (8-48), rathan thall-blackack (PSP), shaded pyranometer as the diffuse reference instrument.
Although rain gauge remains the reference instrument for the measurement of rain rate, the strong spatial and temporal variability of rainfall makes it difficult to spot faulty rain gauges.
For this purpose, the color of a large number of Munsell samples (corresponding to the previously defined color gamut of granite) was measured with a digital camera and with a spectrophotometer (reference instrument).
In this work the analysis of the use of a laser tracker as a reference instrument in calibration and verification procedures for articulated arm coordinate measuring machines (AACMM) with an indexed metrology platform is presented.
