Roder H M, Perkins R A
National Institute of Standards and Technology, Boulder, CO 80303.
J Res Natl Inst Stand Technol. 1989 Mar-Apr;94(2):113-116. doi: 10.6028/jres.094.014.
The resistance of metals is a function of applied pressure, and this dependence is large enough to be significant in the calibration of transient hot-wire thermal conductivity instruments. We recommend that for the highest possible accuracy, the instrument's hot wires should be calibrated in situ. If this is not possible, we recommend that a value of , the relative resistance change with pressure, of -2×10 MPa be used to account for the pressure dependence of the platinum wire's resistance.
