IP65 (Dust-Tight, Resistant to Water Jets)
A protection code combining a dust-tight housing with resistance to low pressure water jets. The test condition is a 6.3 mm nozzle, about 3 m distance and about 12.5 L/min flow; the duration is 1 minute for each square metre of housing surface, with a minimum of 3 minutes. Withstanding a jet does not mean the device can be immersed in water.
The IPX5 test is carried out by directing water at every surface of the housing with a moving nozzle; the aim is to see that the sealing holds under a pressurised flow as well. The test parameters are defined in IEC 60529: 6.3 mm nozzle, ≈3 m distance, ≈12.5 L/min; duration 1 minute for each m² of surface, minimum 3 minutes. The pressure is on the order of 30 kPa; far below that of industrial washing machines.
- Distinction: IP65 covers jets but not immersion; IP67 covers immersion but not jets. If both are required, the housing must be declared with a dual rating such as IP66/IP67.
- Application: on sites where surfaces are washed down, such as food and concrete plants, the jet side takes priority for the remote and receiver, while in open storage yards the immersion side does.
The values declared for AXI's ST/SF sets are IP64 and IP67; before attributing IP65 to a product, confirm the technical specifications on the product page and the user manual.
Context in which this term is used: Complete guide to IP protection classes