According to IEC 60335-2-103:2023 Figure 103, 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.
Model: TT-T20
Measurement of the surface: Diameter 5 mm * 0.5 mm tin copper
Bushing: Inside diameter 3 mm, Outside diameter 5 mm
Thermocouple: Diameter 0.3 K
Thrust: 4 N
IEC 60335-2-103:2023 Figure 103 - Probe for Measuring Surface Temperatures
A) Adhesive
B) Thermocouple wires 0,3 mm diameter to IEC 60584-1 Type K(chrome alumel)
C) Handle arrangement permitting a contact force of 4 N ± 1 N
D) Polycarbonate tube: inside diameter 3 mm, outside diameter 5mm
E) Tinned copper disc: 5 mm diameter, 0,5 mm thick
Note: The contgact face of the disc is to be flat.