According to IEC60335-2-11:1993 fig 101 and IEC60335-2-6:1997 fig 104, such as requirements preconditioning of household and similar electrical appliances drum dryers and in vertical ranges, hobs, ovens and other were surface temperature rise measurement.
IEC 60335-2-11 Test Probe for Measuring Surface Temperatures
Tags:IEC 60335 , SMT-T20