|

Search keywords:

product name, product type, model number,
test method, manufacturer, technique, application

Water Vapor Permeability

BACK
Share

Standards:

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

Applications:

Equipment designed to test the sample permeability to water vapour absorption. Six standard glass bottles will contain the sample in the top outer surface, such as silica gel in the inner part.
Previous weighing of each bottle will detect water vapour absorption percentage after re-weighing the same bottles and calculate the weight gain. The equipment is subject to test under conditioned ambient.

Product Information:

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 gain is used to determine the degree of permeability. It is essential that the entire operation is carried out in a conditioned atmosphere of 20°C and 65% per cent relative humidity. In addition to the standard equipment supplied with the STM 473, there is a built-in timer to record the number of hours that testing has been carried out.

Construction Specifications

— sheet-steel carrying structure, of adequate thickness, varnished with antiacid epoxy resin

— ventilation unit according to specifications with duralumin blades — duralumin bottle

holder unit, with spring system for releasing the bottles. Unit with adjustable friction for the drawing of the bottles at the end of the test

— movement unit with radio motor in oil-bath
 

Control Board With:

— magnetothermal safety switch

— illuminated START-STOP push buttons

— electronic timer for programming the testing times

Leave Message