A simplified correction method for thermocouple disturbance errors in solids

When a thermocouple is embedded in material of lower thermal conductivity, under certain heating or cooling conditions, the presence can distort surrounding temperature field. As result, measured temperatures may be very different to ‘undisturbed’ that would exist without thermocouple. This study presents results sensitivity analysis key factors influencing this disturbance. A series heat transfer models and accompanying experiments are used demonstrate effects geometry, contact properties, regime on measurement error. These tailored finite element were validated against vermiculite insulation board, which confirmed accuracy simulating disturbance for inert conditions. Also, simplified version model was calculate error number subsequently predict range corrected experimental measurements. correction method found greatly improve Since does not account moisture transfer, creep uncorrected errors could observed.