Bundesmann Water Repellency Tester determines the water resistance of fabrics to the simulated rain under the moving condition.

Fabric is held on the test cup under which there is rain wipers which is rotating and rub the fabric underside. 

The amount of the water penetrates the fabric into the test cup can be measured. And the amount of water absorbed by the fabric can be weighed and determined.

Product Advantages:

1.     Flow rate automatic control.

2.     Testing water internal recycling.

3.     The flow rate, specimen rack rotation speed, wipe rotation speed can be set in the touchscreen.

4.     An external temperature-controlled water supply device can be connected.

Testing Scopes:

Outdoor sportswear, coated fabrics, raincoats, diving suits, etc.

Specification:

1.     Nozzles distributed area: 1300 ± 6.5 cm2 (Dia. 406±2mm), 300 nozzles equally distributed over a circular horizontal surface.

2.     Number of Nozzles: 300pcs

3.     Water Drop Diameter: Approximately 4mm

4.     The vertical distance between the drop former and the center of the specimen surface: 1500mm ± 7.5mm

5.     Number of Test Cups: 4 units

6.     Test Cup Carrier Rotation Speed: 6rpm ± 0.5rpm

7.     Wiper Assembly Rotation Speed: 20rpm ± 0.5rpm

8.     Wiper Assembly Rotation Angle: 100? ± 1.0 ?

9.     The Force the Wiper Assembly Pressed Against the Underside of the Specimen: Approximately 250cN

10.  The length of the Wiper Arm: 48mm

11.  The Width of the Wiper Arm: 5mm

12.  The Outer Diameter of the Test Cup: 100 ± 0.05mm

13.  The Exposed Area of the Clamped Specimen: 80cm²

14.  The Air Vent Diameter of the Test Cup: 7 ± 1mm

15.  The Angle the Centerline of Test Cup is Inclined from the Vertical: 15 ± 1.0°

16.  The Flow Rate of the Water Drop (each test cup receive water within a specified time): (200ml ± 10ml)/2.5min.

17.  Dimensions of the Main Machine: 750(L)×750(W)×2100(H)mm

18.  Weight of the Main Machine: Approximately 235kg

19.  Power: AC 220V，50/60Hz

The Specification of the Centrifuge:

1.     Rotation Speed: 700rpm

2.     The Time Required to Attain the Speed of 700rpm from 0 and Vice Versa: Between 1s and 2s

3.     Mounting Surface Diameter: 175 ± 0.1mm

4.     The Number of the Ribs on the Surface of the Disc: 50 ribs

5.     The Height of the Ribs: 1 ± 0.1 mm

6.     The Length of the Four Steel Pins: 6 ± 0.5mm

7.     The Distance from the Center of the Disc to the Steel Pin: 60mm;

8.     The Total Mass of the Disc and Shaft: 410 ± 2g

9.     Dimensions of the Main Machine: 300(L)×420(W)×460(H)mm

10.  Weight of the Main Machine: Approximately 23kg

11.  Power: AC 220V，50/60Hz

Testing Standards：

Ordering Information：

RF4468N            Bundesmann Water Repellency Tester

RF4468N/1         Test Cup Set

RF4468C            Centrifuge