IEEE standards download IEEE Std 442-2017 pdf download – IEEE Guide for Thermal Resistivity Measurements of Soils and Backfill Materials IEEE Std 442-2017 pdf download - IEEE Guide for Thermal Resistivity Measurements of Soils and Backfill Materials. 4.1 Equipment required for field measurements 4.1.1 Field thermal probe The field thermal probe is fabricated from a stainless steel... 02-23 Download Now