Water Vapor Permeability Tester>is mainly applicable to leathers and textiles used in footwear uppers and clothing where it gives a measure of the ability to remove perspiration from the surface of the wearers skin.The tester is used to determine the amount of water vapour a material will transmit through its structure in a specified time.
UNI EN IUP/15, UNI EN 13515, EN ISO 20344: 6.6, IUP 15, BS 3144 Method 24, SLP 25，DIN 53333, ISO 17699, DIN 53 429, METODO - 309 WI 009
The vaporpermeability of leather is evaluated by means of measuring the weight of water-vapor that permeates to specimen perunit time and per unitarea. The main functional components includes: testing holder clamp, ventilation fan, control panel with functions of switch, time setting and recording.
The machine has six separate test stations on a rotary table and each one has a sample holder. Silica gel desiccant is placed in the holder and the test material is placed over the neck of the holder and secured by a screw top. After weighing each holder, complete with silica gel and sample material, the holders are placed and locked into the rotary mechanism. After 7-8 hours the complete holder is weighed again and the gained weight is used to determine the degree of permeability. It is essential that the entire operation is carried out in a conditioned atmosphere of 20deg;C and 65% per cent relative humidity. In addition to the standard equipment, the tester is also supplied with a built-in timer to record the number of hours that testing has been carried out.
- Test stations: 6;
- Electronic timer for recording the testing times;
- The fan blade: 3;
- Dimension of fan blade: 75times;90mm;
- Angle between fan blades: 120deg;;
- Gaps: 10plusmn;5mm;
- Speed of fan: 1400r/min;
- Rotaryspeed of specimen: 75r/min;
- Diameter of sample holders: 30plusmn;1mm;
- Diameter of fixtures: 30plusmn;1mm, helical;
- Weight: 45kg;
- Dimension: 350times;570times;450mm;
- Power Consumption: 300W.
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