IP68 vs IP69K: Protection Differences & Deep Water Suitability

Differences Between IP68 and IP69K & Their Deep Water Suitability

1. Dust Protection

• IP68:

• The digit “6” signifies complete dust protection, ensuring that no dust enters the device.

• IP69K:

• Also rated “6” for dust protection, but it is additionally optimized to withstand high-pressure water cleaning.

2. Water Protection

• IP68:

• Designed for long-term submersion. Typically, devices can operate at depths of 1–3 meters, with some specially designed models capable of supporting deeper conditions (up to 10 meters or more).

• IP69K:

• Primarily engineered to resist high-pressure, high-temperature water jets. It can typically endure water pressures of 80–100 bar and water temperatures up to 80°C during spray tests. However, it is not intended for continuous deep water immersion.

3. Deep Water Suitability

• IP68 in Deep Water:

• Standard IP68 devices usually work within 1–3 meters. Special high-grade models designed for deep water can operate beyond 10 meters, but always verify the manufacturer’s specifications.

• For extreme deep-water applications (such as underwater robotics or marine exploration), consider encoders specifically designed with pressure compensation or submersible features.

• IP69K in Deep Water:

• Although IP69K products excel at withstanding short-term high-pressure water jets, they are not designed for prolonged deep water use. Continuous exposure to high water pressure, especially beyond a few meters, can compromise their sealing.

4. Application Scenarios

• IP68:

• Ideal for devices that require long-term underwater operation, such as marine instruments, underwater robots, and outdoor automation equipment.

• IP69K:

• Suited for applications where equipment must endure frequent high-pressure cleaning, such as in automotive wash systems, food processing, and pharmaceutical equipment.

5. Testing Standards & Design Focus

• IP68:

• Emphasizes sealing performance under prolonged submersion, ensuring stable operation at designated water depths.

• IP69K:

• Focuses on resisting high-pressure, high-temperature water jets, making it suitable for environments that require periodic intense cleaning.

Summary Table

Recommendation:

• For applications requiring long-term operation in deep water (beyond 10 meters), choose an encoder specifically designed for deep water or submersible use (IP68 deep-water models).

• For environments that demand resistance to high-pressure cleaning, select an encoder with an IP69K rating.