How should the protection level of the weighing sensor be selected?

push time:2023-06-26 Popularity: source:52

How to make the right choiceLoad CellFirstly, we need to understand what protection level is. The protection level of the weighing sensor refers to the dustproof and waterproof level of the sensor. The protection level is prefixed with IP, followed by two digits. The first digit represents the dustproof level, and the second digit represents the waterproof level.

The dust level can be selected from numbers 0 to 6, and the larger the number, the higher the dust level. The load cell is basically the highest level. The waterproof level can be selected from numbers 0 to 8, and in recent years, a 9K level has also been introduced. In weighing sensors, the common waterproof level is between 6 and 8. Below is a table to list the meanings represented by each level number.
　

	The meaning represented by the first number		The meaning represented by the second number
0	Unprotected	0	Unprotected
1	Protection against intrusion of solid foreign objects with a diameter greater than 50mm	1	Water droplet protection, vertically falling water droplets will not cause damage
2	Protection against intrusion of solid foreign objects with a diameter greater than 12.5mm (medium size)	2	When the shell tilts 15 degrees from vertical to either side, Vertically falling water droplets will not cause damage
3	Protection against solid foreign objects with a diameter or thickness greater than 2.5mm	3	Rain proof or direction with a vertical angle of less than 60 degrees The sprayed water invades the sensor and causes damage
4	Protection against solid foreign objects with a diameter or thickness greater than 1.0mm	4	Prevent water splashing from all directions from invading the sensor and causing damage
5	Completely preventing foreign objects from invading, although it cannot completely prevent dust from invading, But the amount of dust intrusion will not affect the normal operation of the sensor	5	Prevent damage caused by water ejected from nozzles aligned with the shell from all directions
6	Completely prevent the invasion of foreign objects and dust	6	Prevent damage caused by strong waves and strong water jets aligned with the shell
		7	The sensor is immersed in water for a short period of time or in a certain amount of When the water pressure is below the standard, it can ensure that it does not cause damage
		8	The sensor has been submerged under the specified water pressure for a long time, Ensure no damage caused by immersion in water

Nowadays, the protection levels of large brand weighing sensors commonly include IP65, IP66, IP67, and IP68. In addition, there is an IP69K, which is used between 8000 to 10000kPa and+80& amp; Deg; When using pure water from C for high-pressure cleaning, it can prevent water from entering. The pressure water flushing time for each position is 30 seconds.

　

　　冲刷环境

Due to the significant difference between this testing method and other IP tests, devices with IP 69K test seals do not automatically provide IP67 or IP68 protection. They are commonly used in applications that require frequent cleaning and flushing, but are not suitable for situations where the device is completely submerged in water. Therefore, if the load cell is labeled with IP69K, other protection levels such as IP68/IP69K will also be added.

After understanding the meaning of the protection level represented by the weighing sensor, we can choose the corresponding protection level based on the needs of the environment where the sensor is located. If the weighing sensor is not operating in a humid environment, only IP65 or IP66 level needs to be selected; If in a humid environment, IP67 or IP68 rating can be selected; If it is in an environment with frequent cleaning and flushing, such as brewing systems, medical systems, car washing factories, and food and beverage factories, IP68 or IP68/IP69K rating needs to be selected.

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