NYYCUK series tuning fork level switch is a Piezoelectric crystal vibration principle of Universal level detection instrument , applicable to Liquids, slurries and free-flowing solid powders/granules The product can detect the change of tuning fork vibration frequency to trigger the switch signal. Maintenance-free, anti-interference, high reliability It is widely used in petrochemical, food, pharmaceutical and other industries. Empty bin alarm, overflow protection and process control .