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Flap-11S Economical Magnetic Level Indicator

 Display panel with broader design, greatly increases visual distance and viewing angle. With larger sharp scale and digits, display panel appears beautiful and elegant outlook.

 Exceeds national Ingress Protection standard IP54, Ingress Protection rating IP65 and IP66/67 are selectable for different applications.

 Accessories of magnetic switch and remote transmitter have been explosion protection certified for both Flameproof Enclosure and Intrinsically Safety.

 Made of 304 seamless stainless-steel tubes, economical and practical.


  • Flap-11S Economical Magnetic Level Indicator is practical and economical. It is made of 304 stainless steel and suitable for mild corrosive liquids. The chamber with 51mm diameter is made of high quality 304 seamless stainless-steel tube. It effectively avoids the common problems with conventional stainless-steel tube, such as leakage, insufficient pressure endurance, poor appearance and short life time, etc. Besides, Jiwei has developed innovative technologies, introduced full production process management and test to improve the reliability also quality of Flap-11S.


  • Flap-11 Magnetic Level Indicator series products are designed based on the law of equilibrium in U connected vessels and magnetic coupling effect to achieve real-time level measurements and display. As liquid level in the vessel varies up or down, magnetic float in the connected chamber rises or falls simultaneously. Because of magnetic coupling effect, float with a permanent magnet actuates magnetic interacted flaps in the display panel which is mounted beside chamber. Associated flaps will flip 180 degree to indicate liquid level. The front and back surface of flaps are coated with two colors respectively (red and white). Generally, when liquid level rises, the magnetic float moves up and makes associated magnetic flaps flip from white to red, and when liquid level drops, associated magnetic flaps flip from red to white. The interface between red and white flaps is the actual indicated liquid level inside the vessel. According to different chemical properties of measured medium, appropriate materials should be selected carefully for the chamber and the magnetic float. In addition, the weight, volume and structure of magnetic float have to be taken into consideration according to different density of measured liquid in order to achieve optimal measuring accuracy.


  •  Display panel with broader design, greatly increases visual distance and viewing angle. With larger sharp scale and digits, display panel appears beautiful and elegant outlook.

     Exceeds national Ingress Protection standard IP54, Ingress Protection rating IP65 and IP66/67 are selectable for different applications.

     Accessories of magnetic switch and remote transmitter have been explosion protection certified for both Flameproof Enclosure and Intrinsically Safety.

     Made of 304 seamless stainless-steel tubes, economical and practical.


  • Fluid

    Density

    0.452g/cm³

    Viscosity

    ≤200cP

    Measurement parameters

    Measuring range

    Single section: 200-5600mm

    Multi-section: up to 20m or longer

    Accuracy

    ±5mm or ±10mm

    Material

    Chamber

    304 stainless steel, Ф51, thickness TBD according to process pressure and process temperature

    Float

    304, 316L, with F46 (FEP) out-lined

    Display panel

    Flap: aluminum or PA66 nylon, selectable,

    Front cover: glass panel (standard) or acrylic sheet

    Operating condition

    Process pressure

    vacuum10MPa

    Process temperature

    -40350

    Ambient temperature

    -4080

    Output signal

    Switch signal

    Magnetic switch: 220V AC 3ASPDT

    Continuous signal

    Remote transmitter: 420mA

    Process fitting

    Connection type

    Flange with customized dimension

    Material

    304

    End fitting

    Upper vent

    Flat welding cap (standard), flange, cocks, and 1 / 2” NPT ball valve available upon request

    Lower drain

    1 / 2” NPT ball valve (standard), flange and cocks available upon request

    Accessory

    Steam jacket

    Customize

    Electric heater

    Customize

    Thermal insulator

    Rubber foam, asbestos, polyester

    Vacuum jacket

    Anti-frost, for temperature lower than -5

    Safety certification

    Ingress Protection rating

    IP65, IP66/67

    Explosion-proof

    Flameproof Enclosure: Ex d IIC T6 Gb (including magnetic switch and remote transmitter),

    Intrinsic Safety: Ex ia IIC T6 Ga (including magnetic switch and remote transmitter)

  •  Hydrogenator off-gas condensate tank and alkali evaporator in hydrogen peroxide apparatus.

     Water tank in an electrolysis workshop.

     Level measurement in water tanks of various industrial apparatus.





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