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Evaluating Comfort Using Qinsun Sweating Guarded Hotplate

The sweating guarded hot plate instrument, simulating the heat and moisture transfer from the body surface through clothing material to the environment, was designed for the measurement of thermal resistance and water vapor permeability of fabrics, relating to comfort characteristics of the garment. A number of factors govern the accuracy of the measurement, namely air velocity, leading edge effect, bubbles and wrinkles, membrane effect and so forth. The sweating guarded hot plate apparatus provides reproducible and repeatable results.


The specification of Qinsun-Lab Sweating Guarded Hotplate is shown as follow:
Thermal Resistance(RCT) range: 0.002~2.000m2·K/W; 
Indication error ≤ ±2%; 
Repeatability error ≤ ±2%; 
Resolution: 0.001m2·K/W; 
Evaporative Resistance(RET) range: 0-1000m2·Pa/W; 
Indication error  ≤ ±2%; 
Repeatability error  ≤ ±2%; 
Resolution: 0.001m2·Pa/W; 
Test plate temperature range: 20℃-50℃, adjustable; 
Temperature control accuracy: ±0.03℃; 
Temperature measurement: ±0.01℃; 
Air velocity: 0~1.2m/s, continuously adjustable; 
Air velocity accuracy: ±1%; 
The sample platform lift range: 0~70mm, automatic lift; 
Sample thickness: 0~70mm; 
Test plate area: 250mm×250mm; 
Guard ring size: 512mm×512mm, Guard ring width: 127mm;
Dimensions: 770×560×750mm (L×W×H) (not including Climate Chamber); 
Weight: 30Kg (not including Climate Chamber); 
Host power: AC220V±10%, 100W or AC110V±10%, 100W.

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