Magnetic Level Indicator
The bypass level indicator is one of the simplest and most robust method to liquid level monitoring. Flap-11 Magnetic Level Indicator series products are designed based on the law of equilibrium in U connected vessels and coupling magnetic effect to achieve real-time level measurements and display. The level indicator is attached to the vessel and connects directly with the fluid to be measured. Within the chamber is a magnet float assembly inside. This float rests on the fluid surface and moves up and down with the change of level. Because of coupling magnetic effect, float with a permanent magnet actuates magnetic interacted flaps in the visual indicator which is mounted beside the chamber. Associated bi-color magnetic flaps will flip 180 degrees to indicate the actual liquid level. Generally, when liquid level rises, the float moves up and makes associated flaps flip from white to red, and when liquid level drops, the flaps flip from red to white. The interface between red and white flaps is the actual indicated liquid level inside the vessel.
Jiwei Flap-11 Magnetic Level Indicator series possess features and strength of similar products on the market. Furthermore, Jiwei has carried out extensive studies on common problems and developed innovative techniques in design and production processes to make Flap-11 with great reliability and accuracy. Jiwei has been focusing on details of manufacturing technologies, strict production workflow and quality control. So far, 7 patents (both invention patents and utility patents) are qualified on Flap-11 Magnetic Level Indicator.
The visual indicator is made of glass or acrylic panel; the end fittings and glass sealing process are unique designed. Flap-11 is fully-enclosed and has IP66/IP67 protection. The innovative designed magnetic coupling system between the float and the flaps greatly improves the reliability and avoids the flaps being mistakenly flipped as well as causing false reading.
The Flap-11 Magnetic Level Indicator has certified with multiple patents in lining processes, providing F4 (PTFE) / F46 (FEP) lined chambers. The F4 (PTFE) lining is ideal for liquid level measurements of highly corrosive liquids; F46 (FEP) lining is suitable for liquid level measurement of highly permeable as well as corrosive liquids, such as liquid chlorine, bromine water, and etc.
Jiwei Flap-11 Magnetic Level Indicator series have the following benefits:
● Distinctive design with broader visual indicator and magnetic flaps greatly increases both visual distance and viewing angle. The larger sharp scale and digits make the indicator easily readable, even from visible distance of 60 meters.
● Exceeds national standard of IP54, Ingress Protection IP65 and IP66/67 are selectable.
● SW-11 Magnetic Switch, SW-21 Compact Magnetic Switch and Reed-11/21S Remote Transmitter all qualified with SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety and Flameproof Enclosure explosion protection.
● Optional F4 (PTFE)/F46 (FEP) lined chamber manufactured with multiple patented technologies for a wider range of corrosive liquid level control.
● With accessories such as steam / vacuum jacket, electric heater, thermal insulator for complex applications.
4 models for measuring various liquids with different chemical properties:
Flap-11S Economical: Made of 304 stainless steel, more practical and economical. It meets requirements for virtually all industrial applications and processes and can be applied in mild corrosive liquids level measurement.
Flap-11A Standard: Made of 316L stainless steel, with strong corrosion resistance, suitable for majority corrosive liquids.
Flap-11Px Lined model: Chambers are made of 304/316L stainless steel with F4/F46 lining, suitable for strong corrosive liquids.
Flap-11C Plastic: Chamber is made of plastic PP, suitable for low pressure and strong corrosive liquids.
Jiwei also developed Magnetic Switch, Compact Magnetic Switch and Remote Transmitter to combine with Flap-11 Magnetic Level Indicator to fulfill automatic remote level control.
SW-11 Magnetic Switch: Imported high quality and high-power reed switch as core component, with aluminum-alloy housing.
SW-21 Compact Magnetic Switch: Designed with lightweight compact structure and skillful layout, only 35mm in width and 120mm in length. Imported high quality and high-power reed switch as key component.
Reed-11/21S Remote Transmitter: With imported high performance microprocessor. 304 stainless-steel external tube improves the corrosion resistance and reliability.
Panel-11 Indicator：Made of aluminum alloy. Ingress Protection ratings as IP65 and IP66/67 for various applications. Designed with broader panel and greatly increases the visual distance and viewing angle. With larger sharp scale and digits, visual indicator appears aesthetic and reasonable. The visible distance reaches 60 meters. Furthermore, the innovative design of magnetic coupling structure between magnetic flaps and magnetic float greatly improves the reliability.
SW-11 Magnetic Switch, SW-21 Compact Magnetic Switch and Reed-11/21S Remote Transmitter all qualified with SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety and Flameproof Enclosure explosion protection.