First, sum up:
This instrument is on the basis of stabilizing the heat conduction principle one-wayly, when on the sample, go to the two sides at different steady temperature, measure the difference in temperature and thickness between two surfaces of thermal current and sample of the area of conducting heat effectively through the sample, calculate the coefficient of heat conduction. Instrument this test and design to low heat conduction adiabatic material, meet material measure research department test the requirement to adiabatic material heat conduction high precision of coefficient. The instrument consults the standard: GB/T3392-82 " coefficient test method of the plastic heat conduction, protect dull and stereotyped law of heat ", GB/T3139-2005 (fibrous reinforced plastics heat conduction coefficient test method) (glass fibre reinforced plastic heat conduction coefficient test method), GB/10294 (determination of adiabatic material steady state thermal resistance and relevant characteristics protects the hot board law),etc.. Mainly test materials such as the plastics, vacuum glass, fiber, foam, powders, glue,etc.. Apply to large and medium universities and colleges extensively, R&D institution, quality testing department and material for producing factory analyze that measures.
Second, main technical feature;
1, The coefficient range of the heat conduction: 0.001-0.5w/m• k;
2, The temperature-controled range of the hot board: Room temperature -99.99 ℃, main fact, protecting and heating board every No. 4 Branch to examine the warm electric thermocouple, offering an explanation rate is 0.01 ℃, the computer deals with 0.003 ℃ of offering an explanation rate.
3, The thermostatical gutter of cold board: 0-99.99 ℃, temperature fluctuates small at 0.05 ℃. 4, Power: 220V/50HZ power: 3KW;
5, Measure and fruit accuracy ± 3%;
6, Mainly heat the resolution ratio 0.00001A of electric current of the board; Resolution ratio 0.0001V of voltage;
7, The automatic test of the computer, realize the data are printed and exported;
8, The sample size is required: 600*600*(10-60)(mm);
9, Condition of work
①Ambient temperature 10 degrees -35 ℃
②Relative humidity ≤ 80% RH