LFY-643 Contact Heat Conduction Tester

Main application
This instrument is used to test the heat-resistant performance of welder gloves for protecting hands and wrists during welding and related operations.
Instrument features
1. It has a heating body that can withstand temperatures up to 500℃ and the temperature can be controlled;
2. The specially designed calorimeter meets the testing accuracy requirements;
3. It can digitally display the temperature of the heating body, the temperature of the calorimeter, and the critical time;
4. The contact speed can be adjusted.

Technical Specifications
1. Diameter of the heating body contact surface: (25.2 ± 0.05) mm;
2. Diameter of the test surface of the calorimeter: (25 ± 0.05) mm;
3. Contact force during measurement: (49 ± 0.5) N;
4. Critical time timer: 0 - 99.99 seconds, accuracy: ± 0.01 seconds;
5. Contact speed: (5.0 ± 0.2) mm/s;
6. Sample size: Diameter 80 mm.
Applicable standards (different standards require different accessories)
GB 38453-2019 Protective Clothing - Thermal Insulation Clothing, 5.19 Appendix C 
GB 8965.3-2022 Protective Clothing - Protective Clothing for Fume Splashing from Molten Metals 
GB/T 38306-2025 Hand Protection - Heat-Resistant Protective Gloves 
FZ/T 73040-2010 Protective Gloves for High-Temperature and High-Heat Work
AQ 6103-2007 Welder's Protective Gloves - Appendix E Method for Resistance to Contact Heat Test EN 702 Protective clothing - Protection against heat and flame - Test method - Determination of the contact heat transmission through protective clothing or its materials

EN 407 Protective gloves against thermal risks (heat and/or fire)

EN 12477 Protective gloves for welders

ISO 11612:2015 Protective Clothing - Thermal Insulation and Flame Retardant Protective Clothing - Minimum Performance Requirements