IP Rating Guide for Industrial and Hygienic Equipment

What Is an IP Rating?

IP rating, short for Ingress Protection rating, is a standardized system used to define how well electrical or mechanical components are protected from solids and liquids. It is governed by IEC 60529, a widely recognized international standard.

An IP rating typically consists of two digits:

• First digit (0–6): Protection against solid particles, like dust or small objects

• Second digit (0–9K): Protection against liquids, including water jets, immersion, or high-pressure cleaning

For example, IP67 means the device is dust-tight and protected against temporary immersion in water. This distinction is crucial when selecting equipment for industrial and hygienic environments.

---

IP Rating Explained for Industrial Components

Industrial components often face harsh operating conditions, including dust, moisture, temperature fluctuations, and chemical exposure. Understanding IP ratings helps manufacturers and engineers select components that meet these challenges.

IP Rating First Digit – Solids Protection

IP Rating Second Digit – Liquids Protection

---

IP67, IP68, IP69K Meaning and Usage

IP67 – Dust-Tight and Temporary Immersion

IP67 devices are:

• Completely dust-tight

• Protected against immersion in up to 1 meter of water for 30 minutes

Typical Applications:

• Sensors in manufacturing plants

• Outdoor machinery with occasional water exposure

• Conveyor system controls in moderate washdown areas

IP67 is often a practical choice when temporary water exposure occurs but high-pressure cleaning is not required.

---

IP68 – Dust-Tight and Continuous Immersion

IP68 provides a higher level of water protection:

• Fully dust-tight

• Can withstand continuous immersion, depth and duration defined by manufacturer

Typical Applications:

• Submersible sensors

• Equipment in water treatment plants

• Continuous immersion environments in industrial automation

IP68 is ideal for operations requiring long-term waterproofing, such as underwater monitoring systems or continuous fluid handling applications.

---

IP69K – Dust-Tight and High-Pressure Washdown

IP69K is the highest protection rating for industrial and hygienic equipment:

• Fully dust-tight

• Resistant to close-range, high-pressure, high-temperature washdowns

Typical Applications:

• Food and beverage processing equipment

• Dairy and meat production lines

• Pharmaceutical manufacturing and cleanroom devices

• Hygienic sensors and enclosures

IP69K ensures equipment can withstand rigorous cleaning while maintaining safety and hygiene, making it the gold standard for protection class guide for hygienic equipment.

---

Protection Class Guide for Hygienic Equipment

Hygienic equipment must meet strict sanitary and regulatory standards while being resistant to moisture, dust, and cleaning chemicals. IP ratings, particularly IP69K, play a critical role in maintaining compliance.

Key Considerations for Hygienic Equipment

1. Cleanability – Smooth, crevice-free surfaces facilitate cleaning.

2. Corrosion Resistance – Stainless steel or chemically resistant materials prevent degradation.

3. Self-Draining Design – Eliminates water or chemical pooling.

4. Certification Compliance – EHEDG, 3-A SSI, and FDA guidelines ensure hygienic suitability.

Proper IP-rated components reduce the risk of microbial contamination, equipment failure, and regulatory non-compliance.

---

Material Selection for IP-Rated Hygienic Equipment

Stainless Steel

• High corrosion resistance

• Easy to clean and sanitize

• Durable under harsh chemical exposure

Sealing Materials

• EPDM, silicone, or FKM gaskets

• Maintain IP67, IP68, or IP69K protection

• Resist temperature and chemical exposure

Choosing appropriate materials ensures the longevity of both the component and the protection rating.

---

Common Industrial Applications of IP-Rated Components

1. Sensors and Transducers – IP67 and IP68 sensors ensure uninterrupted operation in wet or dusty environments.

2. Hygienic Actuators – IP69K actuators withstand high-pressure washdowns in food and pharmaceutical production.

3. Control Panels and Housings – IP-rated enclosures protect internal electronics from dust, moisture, and cleaning agents.

4. Conveyor Systems – IP67 and IP69K components maintain alignment and hygiene during cleaning.

Using IP-rated components in these areas reduces downtime, enhances safety, and ensures compliance.

---

Choosing the Right IP Rating

1. Assess Environment: Identify dust, moisture, chemical exposure, and washdown intensity.

2. Determine Hygiene Needs: For food, beverage, and pharmaceutical applications, IP69K is often required.

3. Material Compatibility: Ensure metals and gaskets withstand cleaning agents and temperature extremes.

4. Standards and Certification: Verify EHEDG, 3-A, and IEC compliance for hygienic and industrial use.

---

Installation and Maintenance Best Practices

• Properly seal joints and cable entries

• Avoid compromising IP protection during mounting

• Follow manufacturer guidelines for torque and assembly

• Inspect regularly for wear, cracks, or seal failure

• Use manufacturer-approved cleaning procedures for hygienic equipment

Regular maintenance prolongs lifespan and ensures the protection class remains effective.

---

Misconceptions About IP Ratings

• “Higher IP = Better” – Only select the rating required for your environment; over-specifying can increase costs unnecessarily.

• “IP Rating Guarantees Hygienic Design” – IP protects against ingress but does not automatically make a component hygienic.

• “All IP69K Ratings Are Equal” – Certification matters; always verify testing standards.

---

Industry Trends

1. Rising Demand for Hygienic Equipment – Food and pharmaceutical industries are increasingly adopting IP69K-rated devices.

2. Integration with Automation – IP-rated sensors and enclosures enable fully automated hygienic processes.

3. Sustainability Focus – Stainless steel components are recyclable and environmentally friendly.

4. Advanced Manufacturing – Precision engineering ensures consistent IP protection and durability.

---

Conclusion

Understanding IP rating explained for industrial components is essential for safe, reliable, and hygienic equipment. Selecting the appropriate rating—IP67, IP68, IP69K—ensures protection against dust, water, and rigorous cleaning procedures.

A complete protection class guide for hygienic equipment supports operational efficiency, regulatory compliance, and product safety. Whether you are working in food processing, pharmaceuticals, or general industrial automation, using IP-rated components is critical to reducing downtime, minimizing contamination, and extending equipment life.

By integrating high-quality IP-rated components and following hygienic design principles, manufacturers can protect their systems, enhance safety, and maintain optimal productivity.

---

Questions and contact

Contact us for hygienic solution

Get our catalogue here