BNA

Description

The bypass level indicator model BNA consists of a bypass chamber, which, as a communicating tube, is connected laterally to a vessel via at least 2 process connections (flanged, threaded or welded). Through this type of arrangement, the level in the bypass chamber corresponds to the level in the vessel. The float with a built-in permanent magnetic system, which is mounted within the bypass chamber, transmits the liquid level, contact-free, to the magnetic display mounted to the outside of the bypass chamber. In this are fitted, at 10 mm intervals, two-coloured
plastic rollers or stainless steel flaps with bar magnets. Through the magnetic field of the permanent magnetic system in the float, the display elements, through the wall of the bypass chamber, are turned through 180°. For an increasing level from white to red; for a falling level from red to white. Thus the bypass level indicator clearly displays the level of a vessel without power supply.

Tecnical description

• Process- and system-specific production
• Operating limits:
  • Operating temperature: T = -196 … +450 °C
  • Operating pressure: P = vacuum to 400 bar
  • Limit density: ρ ≥ 340 kg/m3
• Wide variety of different process connections and materials
• Mounting of level sensors and magnetic switches possible as an option
• Explosion-protected versions
• Simple, robust and solid design, long service life
• Bypass chamber and float from stainless steel 1.4571, 1.4404 or special materials
• Pressure- and gas-tight separation between measuring and display chamber
• Measuring and indicating of the level of aggressive, combustible, toxic, hot and contaminated media
• Functioning of the magnetic display guaranteed even in the case of power failures
• By using a variety of corrosion-resistant materials, applicable for virtually all industrial applications
• Continuous measurement of levels, independent of physical and chemical changes of the media such as: Foaming, conductivity, dielectric constant, vapours, bubble formation, boiling effects
• Interface-layer level measurement from Δ density 100 kg/m3
• Special versions: Food compliant, coatings, liquid gas, heating jacket