THe hydrostatic head tester model WP 35S allows to determine the waterproof limits of fabrics

The Standard UNI EN ISO 811:2018 describes the procedure to perform the test of resistance to water penetration

Samples analyzed with WP 35S are mainly technical textiles, bonded fabrics, coated fabrics, waterproof membranes and other textile materials resistant to water penetration.

The test method according to UNI EN ISO 811:2018 establishes the hydrostatic head limit of fabrics at a passage of waterdrops across the specimen subjected to constant pressure increase of cm.H2O/min.

Original test area is 100 cm2 (UNI 20811), but can be applied on 100 cm2 add-on reductions in compliance with AFNOR Standard.

The hydrostatic head tester is equipped with a pneumatic clamping system with On/Off switch that apply always same force on sample ensuring a perfect tightness of the specimen during hydrostaic head test.


Test area: 100 cm2
Hydrostatic pressure generated from: special propulsion pump
User interface: HMI touch screen (5”)
Storage memory: 20 test results;
Measure units: expressed in cm.H2O or mm.H2O;
Pressure constant increase: a) 10 cm.H2O/min
b) 60 cm.H2O/min
c) Free setup up 600 cm.H2O/min (JIS Standard)
Data export: USB panel slot to permit PC-link;
Power supply: 110/230VAC – 50/60 Hz;


ASCII-printer auxiliary-software-branca-textile Led-lamp

How to export test results from WP 35S?

A) Application software BWP4.0
Ideal for PC with Windows OS Seven, 8, 10 suitable for trend graph monitor and statistical evaluations of results saved on memory and transferred automatically from HMI touch screen to the building automation PC-SCADA HMI monitor platform.
The supply includes installation CD and USB Runtime license for PC.
The application software allows the operator to manage the apparel as follows:
Parameters setting
Test monitor and user commands
Test results saving
Trend graphs monitor
Statistical evaluations
(.CSV) files export
Webserver unit:To enable PC communication via Ethernet and other networking
B) WEBSERVER (.csv) file remote export
To enable the server communication with the device by remote and the (.CSV) files generation.
It includes FTP software for data transferring and SD-Card with high capacity of 16 GB for files saving and backups.