Soliphant is a rugged level switch for use in vessels containing fine–grained and powdery solids. Examples include grain, flour, milk powder, cocoa, sugar, animal feed, washing powders, dyes, chalk, plaster, cement, and plastic granulates.

The symmetrical vibrating fork is excited to its resonant frequency. Vibration characteristics change when the fork is submerged in solid material. The change is registered by the electronics which actuate an electronic switch or relay.

The tip of the Soliphant fork is particularly sensitive, while the base of the fork is completely insensitive. This enables solids of very low density to be detected even with material build–up on the vessel walls.