When choosing a waterproof weighing indicator, you may see products marked IP68, IP69K, or IP68 and IP69K. These ratings represent different levels of protection against water, and are particularly relevant to weighing equipment used in wet or frequently cleaned environments.
Understanding the difference can help you choose a weighing indicator based on the actual working and cleaning conditions of your weighing system.
What Does the IP Rating Mean?
IP stands for Ingress Protection. An IP rating describes the protection provided by an enclosure against the ingress of solid objects and water. The first digit indicates protection against solid particles such as dust. The second digit indicates protection against water.
For a weighing indicator:
- IP6X indicates a dust-tight enclosure.
- IPX8 relates to protection against water immersion under specified conditions.
- IPX9K relates to protection against high-pressure, high-temperature water jets under the applicable test conditions.
The exact test conditions are important. Therefore, IP rating should be considered together with the manufacturer’s specifications rather than treated simply as a general statement that a product is waterproof.
What Does IP68 Mean for a Weighing Indicator?
IP68 indicates a high level of protection against dust and protection against water immersion under specified conditions. For a weighing indicator, this can be useful when the equipment may be exposed to substantial water ingress or immersion.
Applications may include:
- Outdoor weighing systems
- Wet production areas
- Areas exposed to heavy rain
- Equipment installed where water can accumulate
- Possibly briefly immersed in water
However, IP68 does not by itself describe protection against high-pressure water jets. If an indicator is regularly cleaned with a hose or pressure washer, you should also consider whether it has been designed and tested for the relevant washdown conditions.
What Does IP69K Mean for a Weighing Indicator?
IP69K is associated with protection against high-pressure, high-temperature water jets under specified test conditions. This protection is particularly relevant to equipment that needs frequent or intensive cleaning.
Examples include:
- Food processing
- Seafood processing
- Industrial washdown areas
- Wet production environments
- Agricultural applications exposed to water and dirt
- Weighing systems requiring regular cleaning
In these environments, water may reach the indicator directly during cleaning. A suitable washdown weighing indicator needs an enclosure and sealing system designed for this type of exposure.
Why Do Some Weighing Indicators Have Both IP68 and IP69K?
IP68 and IP69K are designed for different types of water immersion environments. IP68 means immersion in water under specific conditions, while IP69K means being subjected to the impact of a high-pressure, high-temperature water jet under specific test conditions. Therefore, the two ratings can complement each other.
A weighing indicator may be exposed to significant water during operation and also require intensive cleaning. In this situation, having both ratings provides information about protection against different types of water exposure.
This is why some weighing indicators designed for wet and demanding environments are specified as IP68/IP69K rather than carrying only one rating.
IP68 vs IP69K: Different Protection Conditions
| Protection | Main concern | Typical application |
|---|---|---|
| IP68 | Water immersion under specified conditions | Outdoor or wet environments where immersion is possible |
| IP69K | High-pressure, high-temperature water jets | Equipment exposed to intensive washdown |
| IP68 & IP69K | Different types of water exposure | Demanding wet environments with both water exposure and regular washdown |
The actual suitability depends on the product’s specified test conditions and how the equipment is installed and cleaned. The important point is that IP68 and IP69K are complementary protection ratings, not simply competing levels.
Which Protection Do You Need for Your Weighing Application?
The right protection level depends on the actual environment.
If you are concerned about water immersion, consider IP68
If the weighing indicator may be exposed to standing water, heavy rain or temporary immersion, IP68 can be an important consideration.
However, if high-pressure cleaning is also part of normal operation, immersion protection alone may not address the complete cleaning requirement.
If you are concerned about the need for frequent cleaning, consider IP69K
If operators regularly use water jets or pressure washing to clean the equipment, protection against high-pressure water jets becomes particularly important.
This is common in food processing, seafood processing and other wet production environments.
If the environment involves different types of water contact, consider both IP68 & IP69K
If the indicator needs protection against both significant water exposure and demanding washdown procedures, an IP68 and IP69K weighing indicator can be a practical choice.
IP Rating Is Only One Part of a Weighing System
The IP rating of the indicator is important, but it does not determine the protection of the complete weighing system.
A weighing system includes load cells, a weighing platform, cables and connectors, weighing indicators, data communication modules, etc., and each component should be suitable for the intended environment.
For example, an IP68/IP69K indicator connected through unsuitable cables or connectors can still have vulnerable points in the system.
Installation also matters. Cable glands, connectors and mounting arrangements should be appropriate for the working environment and installed according to the manufacturer’s requirements. For demanding washdown applications, it is therefore better to consider the protection of the complete weighing system, not only the indicator.
HiWEIGH K9: IP68 and IP69K Waterproof Weighing Indicator
The HiWEIGH K9 is designed for weighing systems operating in wet, dusty and demanding environments. It combines IP68 and IP69K protection with weighing functions and flexible data communication.
The K9 features a sealed PBT back case, transparent PC alloy front cover and integrated front panel design. Capacitive touch buttons provide a smooth operating surface that is convenient for cleaning.
For system integration, K9 provides two standard RS232 ports, with optional Bluetooth, WiFi and USB.
The K9 can be used in applications such as:
- Food processing
- Seafood processing
- Filling and production equipment
- Industrial washdown weighing
- Wet agricultural applications
- Customized weighing systems
The combination of IP68 and IP69K makes K9 suitable for applications where the weighing indicator may experience different types of water exposure and regular cleaning. Learn more about the K9 IP68 & IP69K Waterproof Weighing Indicator!
FAQ
1. Is IP69K better than IP68?
Not necessarily. IP68 and IP69K address different types of water exposure. IP68 relates to immersion under specified conditions, while IP69K relates to high-pressure, high-temperature water-jet protection under applicable test conditions.
2. Why do some weighing indicators have both IP68 and IP69K?
Because the two ratings cover different protection conditions. An indicator may need protection against immersion as well as intensive washdown, so manufacturers may specify both ratings for the same product.
3. What should I check besides the indicator’s IP rating?
Consider the load cells, cables, connectors, weighing platform, installation method and cleaning procedure. The complete weighing system should be suitable for the intended environment.