لول سوئیچ LVL-A7

Vibration Limit Switch LVL-A7-BG1A-E5V1-CG-EMS

• Limit switch for liquids
• Process connection G1/2
• Suitable for process temperatures up to 150 °C (302 °F)
• Rugged stainless steel housing
• Onsite function check possible thanks to LED indication
• External function test with test magnet

• Measuring method	The tuning fork is brought to its resonance frequency by means of a piezoelectric drive. If the tuning fork is covered by liquid, this frequency changes. The electronics monitor the resonance frequency and indicate whether the tuning fork is freely vibrating or is covered by liquid.
  Construction type	compact device
  Operating mode	MAX = maximum safety: The device keeps the electronic switch closed as long as the liquid level is below the fork. example application: overspill protection MIN = minimum safety: The device keeps the electronic switch closed as long as the fork is immersed in liquid. example application: dry running protection of pumps The electronic switch opens if the limit is reached, if a fault occurs or in the event of a power fails (quiescent current principle)