Wika Model BNA Level Gauge (Bypass Level Indicator with Magnetic Display)

Applications of the level gaugeContinuous level indication without power supplyIndication of the level proportional to heightIndividual design and corrosion resistant materials make the products suitable for a broad range of applicationsChemical, petrochemical industry, oil and natural gas extraction (on- and offshore), shipbuilding, machine building, power generating equipment, power plantsProcess water and drinking water treatment, food industry, pharmaceutical industrySpecial features of the level gaugeProcess- and system-specific productionOperating limits: – Operating temperature: T = -196 … 450 °C – Operating pressure: P = vacuum to 400 bar – Limit density: ρ ≥ 340 kg/m3Wide variety of different process connections and materialsMounting of level sensors and magnetic switches possible as an optionExplosion-protected versionsDescription of the level gaugeThe level gauge 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 of the level gauge, 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 of the level gauge, 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 level gauge clearly displays the level of a vessel without power supply.