EN 702 Contact Heat Transmission Tester for Protection Against Heat and Flame

Introduction

This Contact Heat Transmission Tester is designed according to EN702 standard,and it can meet requirements of Chinese standard AQ6103-2007 Protective gloves for welders.The test results includes contact temperature,time of starting test,threshold time etc.

The principle is:under set contact temperature,the measuring protective fabric contacts heating column while bearing 49N pressure,the time of temperature raising 10℃ from initial temperature is threshold time,which is used to evaluate thermal protective property.

Standards:

EN 702:Protective clothing - Protection against heat and flame - Test method: Determination of the contact heat transmission through protective clothing or its materials;

ISO 12127-1:test method for the determination of contact heat transmission. It is applicable to protective clothing (including hand protectors) and its contituent materials intended to protect against high contact temperatures. Application of ISO 12127-1:2007 is restricted to contact temperatures between 100 °C and 500 °C.

Features

1. Contact Heat Transmission Tester adopts high temperature resisting metal heating element,contact diameter is ￠25.2±0.05 mm.

2. Heating temperature range is ambient~500℃,the HMI can show it directly.

3. Contact area of calorimeter is ￠25±0.05×D5±0.02mm,measuring range is not less than 500℃.

4. Contact force:49N,contact speed:5mm/s,calorimeter is controlled by Servo motor,which is automatic up and down.All test process are automatically controlled by program.

5. The platform of heating element can be moved horizontally,which is easy for put sample and make sure the operator’s safety.

6. LCD display,PLC automatically records start time,threshold time,end temperature of threshold time,real-time temperature.

Introduction of main machined parts

Main Components of Contact Heat Transmission Tester