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PERMETEST
A new fast response measuring instrument (Skin Model) for the
non-destructive determination of
water-vapour and thermal resistance or permeability of textile fabrics,
nonwovens, foils and paper sheets
Download here the Permetest Manual 2009
Main technical parameters:
Range of water vapour resistance
Ret:
from 1 to 200 m2Pa/W
Range of relative water-vapour permeability: from 1,5 to 100% Range of thermal permeability: from 1 to 50 W/m2/K Range of thermal resistance Rct: from 0.02 to 1 m2K/W Range of fabric thickness: from 0,1 to 7 mm (or more at lower precision) Adjustable main velocity of the parallel air stream:approx. 1,0 and 2,0 m/s Supply voltage: 120 or 220 V / 50 - 60 Hz, input 50 W Instrument dimensions: 540 x 230 x 130 mm, net weight 7 kg Main features of the instrument:
The instrument provides all kinds of measurements very similar to the
ISO Standard 11092, and the results are evaluated by the identical
procedure as required in the ISO 11092. The differences in relation to
this standard depend in smaller sample, application the 20-22oC
isothermal laboratory temperature instead of 35oC (at the water-vapour
resistance measurements) and by the application of the laboratory
(environmental) water-vapour concentration (humidity) of the parallel
air flow 45 - 60%, instead of the air humidity level of 40%. The heat
flow levels used for calculation of water vapour resistance or
permeability are displayed on digital indicator + external PC PC and
(if required) recorded by means of any sensitive line recorder (nor the
PC nor the recorder are included in the standard delivery). The
correlation coefficient of measurements related to the ISO Standard
SKIN MODEL exceeds 0.9.
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