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what equipment can be used for IPX3 and IPX4 water ingress protection test?

1. Spray nozzle
1. Introduction
The spray nozzle hand-held device is designed according to IEC60529 figure 5, it is it is apply to verify the protection against spraying water (IPX3) and splashing water (IPX4) for large size sample. The hand-held device is consisted by spray nozzle, moving shield, counterweight, hose and pressure gauge. The spray nozzle is made of brass and has 121 holes with diameter 0.5mm (1 hole at center, 1 inner circles of 12 holes at 300 pitch, 4 outer circles of 24 holes at 150pitch). The moving shield is made of aluminum, the counterbalanced shield is in place for IPX3 test, the water pressure is adjusted to give the specified delivery rate, the pressure to achieve this delivery rate will be in the range of 50kPa to 150kPa, and it should be kept constant during the test, the test duration is 1min/m2 of the calculated surface of the enclosure and with a minimum duration of 5 min. For IPX4 test, the counterbalanced shield is removed from the spray nozzle and the enclosure is sprayed from all practicable directions, the rate of water flow and the spraying time per unit area are same as IPX3 test.

2. Specification
Number of holes
121
Holes position
1 hole at center
1 inner circles of 12 holes at 300 pitch
4 outer circles of 24 holes at 150pitch
Hole diameter
Φ0.5mm
Spray nozzle diameter
102mm
Delivery rate
10L/min±5% (manual adjustment)
Water pressure
50kPa to 150kPa
Material
Brass (spray nozzle)
Moving shield (aluminum)
Hose (stainless steel)
1. Introduction:
Oscillating tube is designed according to IEC60529 figure4, clause 14.2.3 and 14.2.4, it is applied to verify protection against spraying (IPX3) and splashing water (IPX4), and widely used in the industries of electronics, luminaire, electric components, auto parts and etc..

The IPX3 and IPX4 waterproof test equipment is consisted by oscillating tubes (R200 to R1600), turntable,water tank, control units (touch screen+PLC), flowmeter and etc.. The oscillating tube is made of SUS304 stainless steel. For IPX3 test, the oscillating tube has spray holes over an arc of 600 either side of the centre point (the other holes are blocked), the total flow rate is adjusted as standard requirement, the enclosure to be tested is placed at the center point of the semicircle, the tube is caused to oscillate through an angle of 1200, 600 on either side of the vertical, the time for one complete oscillation (2*1200) being about 4s and test duration being 5min. For IPX4 test, the oscillating tube has spray holes over the whole 180’’ of the semicircle, the total flow rate is adjusted according to the standard requirement, and measured with a flowmeter. The tube is caused to oscillate through an angle of almost 3600, 1800 on either side of the vertical, and time for one complete oscillation (2*3600) being about 12s. The duration of the test is 10min。 
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