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Introduction
A new term heat transfer index (HTI) has been introduced to avoid confusion with the thermal protective index (TPI) or other terms used in previous versions of this test. HTI calculated from the mean time in seconds to achieve a temperature rise of 24±0.2ºC when testing by this method using a copper disc and a starting temperature of 25±5ºC. The heat transfer index provides a method of grading materials which does not imply that the material tested will give any precise protective time under actual use conditions.
Standard
Features
1. The Heat Transmission Test Apparatus is consists of a control box and stainless steel test gantry;
2. The copper calorimeter is made from 99% copper; diameter 40mm, thickness 1.6mm, weight 18g; constantan thermocouple;
3. There is 1.6mm thick copper sample support frame; the size is 150mmx150mm, the middle hole of 50mm x 50mm;
4. Aluminum calorimeter; dimensions of 149mm x 149mm; thickness of 6mm; intermediate pore size 90mm; weight 264 ± 13g;
5. The specimen support frame is made of stainless steel; And the sample distance is 50mm from the burner mouth;
6. The heat transfer index tester is quipped the imported Meckel burner from the USA; the burner orifice diameter is 38mm ± 2mm;
7. Inlet flow control valve precisely adjust the flame to burn calories
8. Pressure gauge and pressure regulator is imported brands;
9. The metal plate is placed between the burner and heat the sample, can be freely moved away;
10. Timer accuracy is 0.1s;
11. The sample size 140mmx 140mm;
12. The Heat Transfer Index Test Apparatus is equipped with a metal plate;
13. PLC and touch screen intelligent control system;; the system automatically calculates the caloric value;
14. The Heat Transfer Index Tester has function of automatic ignition, automatic timing;
15. The test data is automatically saved and retrieval system, the test report can be printed freely;
16. Thermocouple accuracy is 0.1 ºC;
17. Power supply: 220V 50 / 60Hz
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