HY-502 tuning fork level sensor is applicable for fixed point alarm or control in all kinds of storage level and liquid level in tank. Solid material: rice, milk powder, sugar, salt, washing powder, dyestuff, cement, rock powder, plastic grain etc. liquid media: water, mud fluid, pulp, dyestuff, oil, milk, alcohol, beverage etc. and it can detect sediment in liquid! The instrument has not a movable part and presents merits of anti-corrosion, high sensitivity and easy mounting etc.