RXD Thermal conductometer (hot-wire)
RXD testers have been designed according to relative Chhinese standard GB/T5990 Refractory materials - Determination of thermal conductivity - Hot-wire method, which is equivalent to ISO 8894-1 and ISO 8894-2,MOD. The testers are used to determine thermal conductivity of refractories by cross hot-wire and parallel hot-wire method respectively. The fields of their application are almost include all refractories, which as alumina-carbon brick, magnesia-carbon brick, carborundum products, unshaped refractories etc.
Mainstream model equipment selection guidance:
use temperature
measuring range
Non conducting non reducing refractory
use temperature of carbonaceous material
use temperature of other materials
Equipment use
For testing the thermal conductivity of all kinds of carbon containing refractory materials, equipment to according to the GB/T5990 and ISO8894:1990 test standards.
Technical parameter
1. Test temperature(℃): R-1250; upper temperature of furnace(℃): 1350
2. thermal conductivity test range: 0.02-20W/(m.k)
3. Test accuracy: ±0.5%
4.1 standard sample : 230×114×65mm(two samples)
4.2 powder particle: 230×114×65mm ,one Portland box
4.3 Oxidation protection of carbon containing materials
5. Bottom sample feeding,the main heating system adopts inverter circuit, which has the function of limiting current and short circuit protection.
6. Imported super high precision digital signal acquisition transmitter
7. Ultra high precision hot wire power stability control measurement system, the control precision of the hot wire power is up to 0.1%
8. Using microcomputer control mode, control software based on Windows system, continuous drawing current, voltage, power line and temperature curve, the test data can access the database file, and analyzed using third party software.
Standard:
GB/T 5990-2006Refractory materials - Determination of thermal conductivity - Hot-wire method
ISO 8894-2:1990 Refractory materials－Determination of thermal conductivity －Part 2: Hot-wire method (parallel)
Related literature:
Test of thermal conductivity for carboncontaining material(or silicon carbide)
Author: Zhang Yajing -----《Refractory》2007，41（2）
Test of thermal conductivity for carboncontaining material
Author: Zhang Yajing----- The Eighth National Youth Academic Report of refractory materials in 2001
New trends in the development of test methods for thermal conductivity of refractory materials
Author: Zhang Yajing Zheng Xianghua----- Academic Conference on the application of physical and chemical technology and testing technology for refractory materials
Temperature stability and test efficiency of hot wire thermal conductivity meter
Author: Yu Xiaomin, Tan Lihua-----Comprehensive academic conference on refractory materials 2013
Twelfth National Academic Conference of unshaped refractory materials
2013 refractory raw materials Symposium