IEC 60335-2-9:2019 Figure 105 Temperature Probe

This surface temperature measuring probe is engineered for precise surface temperature rise testing of household and similar electrical appliances. It integrates a Type K thermocouple (chrome alumel, 0.3mm wire) for reliable thermal detection, a handle that ensures a steady 4 N ± 1 N contact force, and a flat tinned copper disc (5mm diameter, 0.5mm thick) for consistent surface contact. A polycarbonate tube (3mm inner, 5mm outer diameter) adds structural stability, making it suitable for grills, toasters, and tumble dryers as specified in key IEC standards.

Standards:

Specifications:
Thermocouple Type: Type K (chrome alumel), compliant with IEC 60584-1:2013
Thermocouple Wire Diameter: 0.3 mm
Contact Force: 4 N ± 1 N (enabled by handle arrangement)
Tinned Copper Disc:  5 mm diameter, 0.5 mm thickness (flat contact face)
Polycarbonate Tube Inner diameter: 3 mm; Outer diameter: 5 mm
Handle Function:  Ensures consistent contact force and easy probe positioning

Test Procedures:
1. Inspect the probe for physical damage (e.g., cracked tube, loose disc).
2. Position the flat copper disc on the appliance’s target surface.
3. Use the handle to apply a contact force of 4 N ± 1 N.
4. Wait for the temperature reading to stabilize.
5. Record the measured surface temperature.
6. Gently remove the probe from the appliance.

Applications:
1. Surface temperature rise testing for portable grills (per IEC 60335-2-9:2019 Figure 105).
2. Thermal safety checks for household toasters (per IEC 60335-2-9:2019).
3. Temperature measurement of tumble dryer surfaces (per IEC 60335-2-11:2020 Fig 101).
4. Surface thermal testing for small portable cooking appliances (e.g., mini grills).

IEC 60335-2-9:2019 Figure 105 Temperature Probe