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Flap-11C Plastic Type Magnetic Level Indicator

Float tube is made of PP/PVC, suitable for level measurements of low pressure and corrosive liquid. It is typically applied in fields as follow:

 Regeneration tank, refrigerant tank, hydrochloric acid tank, alkali tank of membrane nitrate removal equipment at caustic soda plant .

 Waste water tank at sewage treatment plant.

● Raw materials tank at dyeing plant.


  • Flap-11C Plastic Type Magnetic Level Indicator is a commonly used anti-corrosion level meter. With the same measured range, its weight is only about 1/5 of the Standard Type, which greatly facilitates the installation. Also, Flap-11S has introduced innovative production and test processes to improve its reliability and quality. Flap-11C is particularly suitable for chemical water treatment at power station, sewage treatment, printing and dyeing industry, as well as other acidic medium, which are not miscible with PVC/PP.

  • Flap-11 Magnetic Level Indicator series products are designed based on communicating tube and the principles of magnetic coupling function to achieve real-time level measurements. When the measured liquid’s level in the vessel changes, the magnetic float in communicating tube will go up and down, and the permanent magnet steel inside the magnetic float makes the magnetic flaps of the indicator outside the communicating tube turn by 180° which is driven by the magnetic coupling function. Usually the front and back surface of flaps are coated with two different colors respectively (normally red and white) to indicate the actual iquid level inside the vessel. When the level of vessel rises, the flaps turn from white to red, and when the level of vessel drops, the flaps turn from red to white, at the red and white junction, the actual level of vessel isindicated. According to different chemical properties of the measured medium, appropriate materials for the communicating tube should be applied. In order to achieve to the best accuracy of measurement, the magnetic float’s weight, volume and structure have to be satisfied with the density of measured liquid.

  • ● Lightweight, the weight is about only 1/5 of stainless steel product, and easy installation. 

    ● Be made of strong anti-corrosive materials, such as PP/PVC.

    ● Indicator panel and magnetic flaps uses widened design,make visual distance and viewing angle increase  greatly, the ruler and its figures are bolder and clearer.

    ● Level of Ingress Protection of IP65 and IP66/67 are available, exceeding national standard requirement of IP54;

    ● Accessory magnetic switches and remote transmitters have got double certifications of Explosion-proof and Intrinsic Safe.

  • Fluid

    Density

    0.452g/cm3

    Viscosity

    ≤200cP

    Measurement parameters

    Measuring range

    Single section: 200-4000 mm 
    Multi-section: up to 20m or more

    Accuracy

    ±5mm or±10mm

    Material specifications

    Measuring tube

    PP , Ф50, wall thickness 4.2mm

    Float

    NBR, PP

    Indicator panel

    Optional aluminum flap or PA66 nylon flap, and optional cover plate of glass (standard) or acrylic.

    Operating conditions

    Process pressure

    -0.1 MPa0.6Mpa

    Process temperature

    PP: -20~80

    Ambient temperature

    -4050

    Signal output

    Switch

    220VAC 3A, SPDT

    Transmitter

    420mA

    Process connection

    Connection type

    Flange, customization

    Materials

    PP

    End fittings

    Upper vent

    Flat welding seal end

    Lower drain

    Lower end with drain valve by default

    Safety certification

    Protection rating

    IP65IP66/67

    Explosion-proof

    Ex d IIC T6, Ex ia IIC T6 (magnetic switch and transmitter)


  • ● Used to measure the level of regeneration tank, refrigerant tank, hydrochloric acid tank, alkali tank of membrane nitrate removal equipment at caustic soda plant.

     Used to measure the level of waste water tank at sewage treatment plant.

    ● Applied in raw materials tank at dyeing plant.


  • Flap-11C Plastic Type Magnetic Level Indicator


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