UZYK-11,12-type tuning fork Level Controller is used to detect a variety of non-viscous nature of dry powder and small particles of solid material, as the low level control and alarm of a high-sensitivity detection instruments. Widely used in food, food processing sector, light industry, building materials, pharmaceuticals, plastics and other industrial and metallurgical enterprises of foundry sand, small iron particles, metal powders such as level control. Meter has no moving parts, and has anti-corrosion, high sensitivity and convenient installation. ◇ works by tuning fork and electrical meter box integral part of the sender, as the place to install the instrument. Pressing the two end portions of the tuning fork piezoelectric crystal, a group of driving elements, drive the tuning fork to vibrate, the other group is the detecting element, the vibration is converted into voltage fork body. Both were connected to the input and output of the amplifier, a mechanical - electronic oscillator circuit. When the damper fork quilt, solid materials, stops the oscillator, the output relay switch signal.