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Vibrating Level switches | Versions with prongs or bar

The Vibration Level Indicators are suitable for level measurements in liquids, solid powder and solids in liquids, to detect level states only.
The fork probes are preferable for applications on very fine powdery clean and solid liquids, while the rod, foil and membrane probes are preferable on dirty and viscous liquids, and fine powdery solids.
They are composed of a probe which, having vibrated at its natural resonance frequency in air, varies the frequency of vibration in the presence of the liquid or solid to be detected.
This frequency variation is detected by a second piezoelectric element which, by means of a detector and amplifier circuit, drives a final relay to a possible visual alarm signal.
 
The vibration level sensors can be installed vertically or laterally to the tank to be detected and do not require calibration.
The measurement probe is vibrated at the frequencies typical of:
400 Hz for liquids
80-160 Hz for powdery solids
from a piezoelectric element to the resonance frequency in air.
An increase in the level, such as to touch the measuring probe, causes a variation of the vibration frequency, of about 20%, with respect to the resonance frequency in air.
This frequency variation is detected by a second piezoelectric element which, by means of a detector and amplifier circuit, drives a final relay and a possible visual alarm signal.

Advantages:
  • They do not need calibration
  • Good repeatability
  • Suitable for clean and dirty liquids, and for solid fine powders even in liquids 
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LFV200 Vibration level switch
Price €191.00
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Suitable for detecting level conditions in clean or dirty liquids.
The Vibration Level Switches consist of a probe which, when vibrated at its natural resonant frequency in the air, varies the vibration frequency in the presence of the liquid to be detected.

  • Measuring range up to 1200 mm
  • Process temperature -40...+150°C
  • Protection degree IP67
  • Atex approval Only safe zone
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LFV300 Vibration level switch
Price €767.00
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Suitable for detecting level conditions in clean or dirty liquids.
The Vibration Level Switches consist of a probe which, when vibrated at its natural resonant frequency in the air, varies the vibration frequency in the presence of the liquid to be detected.

  • Measuring range up to 2 m
  • Process temperature -50...+250°C
  • Protection degree IP67
  • Atex approval on request
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LBV300 Vibration level switch
Price €464.00
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Suitable for surveys of level states in powdery solids and of solids in liquids.
The Vibration Level Switches consist of a probe which, when vibrated at its natural resonant frequency in the air, varies the vibration frequency in the presence of the solid to be detected.

  • Measuring range up to 5000 mm
  • Process temperature -50...+250°C
  • Protection degree IP67
  • Atex approval on request
Product Detail
LBV301 Vibration bar level switch
Price €541.00
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Suitable for surveys of level states in powdery solids.
The Vibration Level Switches consist of a probe which, when vibrated at its natural resonant frequency in the air, varies the vibration frequency in the presence of the solid to be detected.

  • Measuring range up to 5 m
  • Process temperature -50...+250°C
  • Protection degree IP68
  • Atex approval on request
Product Detail
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