IEC 60335-2-11 Test Probe for Measuring Surface Temperatures

This surface temperature measuring probe is designed specifically for testing household and similar electrical appliances, focusing on accurate surface temperature rise measurement. It integrates a Type K thermocouple (chrome alumel) for reliable thermal sensing, paired with a handle that ensures a consistent contact force of 4 N ± 1 N—critical for precise readings. The probe also includes a tinned copper disc (flat contact face) and a polycarbonate tube for structural stability, meeting safety and performance needs for appliances like tumble dryers, hobs, and ovens 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 (achieved via 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 stable contact force and easy probe positioning

Test Procedures:
1. Inspect the probe for physical damage or wear (e.g., cracked tube, loose disc).
2. Position the copper disc of the probe on the target surface of the appliance.
3. Use the handle to apply a contact force of 4 N ± 1 N to the probe.
4. Wait for the temperature reading to stabilize (follow appliance test guidelines for wait time).
5. Record the measured surface temperature accurately.
6. Remove the probe gently from the appliance surface.

Applications:
1. Surface temperature rise measurement of household tumble dryers (per IEC 60335-2-11:2020).
2. Thermal testing of stationary cooking ranges and electric hobs (per IEC 60335-2-6:2020).
3. Surface temperature monitoring of household ovens during safety compliance tests.
4. Temperature verification of similar electrical appliances requiring thermal safety checks.

IEC 60335-2-11 Test Probe for Measuring Surface Temperatures