DRE-III multifunctional fast thermal conductivity tester (transient plane heat source method) (Hot Disk Thermal Conductivity Tester)
I. Overview: The thermal conductivity meter uses the transient planar heat source method, based on the TPS transient planar heat source technology, using Hot Disk probes, special high-precision unit instrument testing and communication technology, and using computer high-speed data processing technology to quickly collect data from the probe and improve The rapid calculation of the mathematical model can quickly and accurately test the accurate and reliable results; professional instruments make the machine extremely reliable, easy to operate, and quick and easy to maintain. The advantages of this instrument are: (1) Direct measurement of heat propagation can save a lot of time; (2) It will not be affected by contact thermal resistance like the static method; (3) No special sample preparation is required, only a relatively flat sample surface is required for solid materials.It has the advantages of fast measurement speed, wide application range, and the ability to successfully avoid the effects of natural convection during the experiment. It is currently a popular test method. Equipment reference standard: ISO 22007-2 2008. Test materials: metal, ceramic, alloy, thermal grease, silicone, silicone rubber, rock, soil, rock, polymer, paper, fabric, foam, concrete, composite sheet, paper honeycomb panel, solid, powder, liquid, paste , Coating, film, anisotropic material, etc. Thermal conductivity, thermal conductivity (thermal diffusion coefficient) and specific heat capacity, thermal storage coefficient and thermal resistance. Second, the main technical parameters: 1. Thermal conductivity measurement range: 0.0001 ～ 100 w / (mk), resolution is 0.00001w / (mk); 2. Range of thermal diffusion coefficient (temperature conductivity coefficient): 0.1 ～ 100 m 2 / s; 3. Thermal storage coefficient range: 0.1 ～ 30 w / (m 2 .k); 4. Specific heat capacity range: 0.1 ～ 5 kJ / (kg. ℃); 5. Thermal resistance range: 0.5 ～ 0.000005 mm 2 .k / w; 6. Temperature measurement accuracy: ≤0.001 ℃; 7. Relative measurement error: ≤3%; 8. Repeatability error: ≤ 3%; 9. Test time: 1 to 120 seconds. 10. Sample test temperature range: -40 ～ 130 ℃; standard configuration: room temperature. Various high and low temperature control boxes (-40 ～ 130 ℃) or test status under vacuum can be selected according to customer requirements. The contract stipulates that the cost is extra; 11.Probe configuration: Standard configuration: diameter Φ15mm. Probe diameter can be selected according to customer requirements: Φ15mm, Φ7.5mm, or configured at the same time, as agreed in the contract, the cost is extra; 12. Sample requirements: a. Solid block or round, square, and special-shaped samples do not need special preparation, only a relatively flat sample surface, equipped with a special sample clamping device.The minimum size of the sample measured by the Φ7.5mm probe (15x15x3.75mm), the minimum size of the sample measured by the Φ15mm probe (30x30x7.5mm). b. There are no special requirements for powdery, pasty and liquid substances, and special sample test boxes are provided. c. For thinner materials, the samples can be superimposed. 13. Fully automatic testing software is used to quickly and accurately perform test process parameter analysis and report output on samples. 14. Power supply: AC 220V ± 10%, 50/60 Hz, machine power: <500w; Third, the technical indicators of the probe: 1. Heating material: metallic nickel; 2. Operating temperature: -50 to 150 ° C; 3. Maximum power: 20w; 4. Maximum voltage: 20V; 5. Maximum current: 1A; 6. Resistance: about 10Ω, according to the resistance value marked on the probe; 7. Nickel wire specification: thickness 0.01mm, hot wire width: 0.35 ± 0.03mm; Hot wire spacing: 0.35 ± 0.03mm; 8. Protective layer material: polyimide film (Kapton); single layer thickness: 0.06mm; 9. Probe diameter: Φ15mm, Φ7.5mm. 10. The total thickness of the probe (including the thickness of the adhesive layer) is 0.07 ± 0.02mm.