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Quick Thermal Conductivity Meter

Learn about thermal conductivity measurement, principles of hot wire method, features of QTM-500, applications, and optional accessories.

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Quick Thermal Conductivity Meter

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  1. Quick Thermal Conductivity Meter KYOTO ELECTRONICS Manufacturing Co.,Ltd. QTM-500

  2. Introduction to thermal conductivity measurement by QTM-500 INTRODUCTION(1) : What is thermal conductivity? INTRODUCTION(2) : Purpose of TC measurement INTRODUCTION(3) : Kinds of thermal conductivity measuring method PRINCIPLE OF MEASUREMENT(1) : Principle of Hot wire method (1) PRINCIPLE OF MEASUREMENT(2) : Principle of Hot wire method (2) FEATURE : Features of QTM-500 (1) ,(2) EXAMPLE OF DISPLAY(1) : LC Display of QTM-500 (1) EXAMPLE OF DISPLAY(2) : LC Display of QTM-500 (2) APPLICATION (1) : Application of QTM-500 (1),(2) APPLICATION (2) : Example of thermal conductivity(1) APPLICATION (3) : Example of thermal conductivity(2) OPTIONAL ACCESSORY : Optional accessories QTM-500

  3. What is Thermal Conductivity (TC)? TC: thermal transfer within solid material Heat flux : q = l ( DT/DX) [W/m ] 2 TC l : characteristic value of a material [W/mK] QTM-500

  4. Purpose of TC measurement Thermal Conductivity Research work on property of material Quality control of material Thermal analysis of material * Energy saving * Improve thermal efficiency * Increase data base * Evaluation of material * Maintain quality of material QTM-500

  5. Kinds of thermal conductivity measuring method Guarded-Hot-plate method Absolute method Steady-State method Reference-plate method Reference method Heat Flux measuring method Synchronizedmethod Unsteady-State (JIS R 2618) (ISO 8894-1,2) Absolute method Pulse method method Hot wire method TC-51 Reference method QTM-500 + PD11 QTM-500

  6. Principle of Hot wire method (1) Hot wire Sample Thermocouple Hot wire method Temp. Temp. Time t Time log ( t ) Temperature rise vs.Time Temp.rising curve vs. Log time QTM-500

  7. Principle of Hot wire method (2) 1) Hot wire method l = l : thermal conductivity of sample [W/mK] q : calorie per unit time - length of heater [W] t1,t2 : measured time length [sec.] T1,T2 : temperature at t1, t2 [K] 2) Reference Hot wire method When TC of half of the material facing hot wire is known: l = -l 0 [W/mK] l0: known TC QTM-500

  8. Features of QTM-500 (1) 1. Easy operation and measures in short time. (60 seconds) 2. Wide range of measurement. (0.024 - 12 W/mK) 3. Very good reproducibility. ( + 3% ) 4. Sample required: Any shape or size of material if flat area is 10 x 5 cm. 5. Real time plotting of temperature curve during measurement. QTM-500

  9. Features of QTM-500 (2) 6. Equilibrium of sample temperature is sensed automatically. Stability is displayed by 2 steps - QUICK, FINE 7. Auto measurement can be repeated for preset times. (Max. 100 times) 8. Maximum 100 measurement results of TC can be saved. 9. Optimum heater current for the sample is automatically selected. QTM-500

  10. LC Display of QTM-500 (1) QTM-500

  11. LC Display of QTM-500 (2) QTM-500

  12. Application of QTM-500 (1) 1. Research work on duplicating paper like copy sheet 2. R&D work on packing and parceling material 3. Chemical analysis of fabrics and thread material 4. Studies and evaluation on clothing and warmer 5. Studies and evaluation on construction materials like wall and insulation 6. Studies and evaluation on plastic vessels and packaging material 7. Studies on baking process of foods like bread and biscuit 8. Studies on packed foods and processed foods QTM-500

  13. Application of QTM-500 (2) 9. Studies on compound material like car tire 10. Research and evaluation on brake shoe for automobile 11. R&D work on fire bricks 12. Studies and revaluation on construction material for thermal insulation 13. Studies on construction material like concrete and block 14. Studies on heat radiation of electronic parts like IC package 15. R&D work on special glasses 16. Research activity on new material like fine ceramics QTM-500

  14. Example of thermal conductivity (1) 3 3 3 3 3 QTM-500

  15. Example of thermal conductivity (2) QTM-500

  16. Optional accessories 1) Needle probe type sensor PD-NO 2) Sensor of absolute Hot wire method PD-31 3) Insulated and water-proof probe PD-13 4) Powder measuring case QTM-PA1 5) Printer DP-500 QTM-500

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