To measure the powder level, most of the radar level gauges and ultrasonics are used. Or heavy hammer level gauge. High-frequency radar level gauge application: powdery solids, or environments with a lot of dust ① coal bunker, cement bunker, clinker bunker, ② Flour, corn flour, rice flour, sorghum flour, etc. ③Iron powder, aluminum powder, etc. Ultrasonic level meter (ultrasonic level sensor) is used to measure the level of solid materials such as coal, ore, corn, wheat, glass, straw, garbage, wooden boards, automobiles, plastic particles, etc. It is used in metallurgy, mining, grain processing, storage, security and other industries. Extended reading: Non Contact Liquid Level Sensor Working Principle