Flap-11A Standard Magnetic Level Indicator
Flap-11A Standard Magnetic Level Indicator is made of 316L stainless steel, suitable for majority corrosive liquids.
Flap-11A Standard Magnetic Level Indicator is made of 316L stainless steel, suitable for majority corrosive liquids. The chamber with 51mm diameter is made of high quality seamless stainless-steel tube, effectively avoids the common problems of conventional stainless-steel tube, such as leakage, insufficient pressure endurance, poor appearance and short life time. Jiwei has developed innovative technologies, introduced strict process management and quality inspection to ensure Flap-11S with great reliability.
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.
● 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.
● Magnetic Switch, Compact Magnetic Switch and Remote Transmitter all qualified with SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety and Flameproof Enclosure explosion protection.
● Made of 316L SS, suitable for most liquid level control.
| Applicable liquid | Density | 0.45～2g/cm³ |
| Viscosity | ≤200cp | |
| Measurement parameters | Range | Single section: 200～5600mm，multi-section up to 20m or longer |
| Accuracy | ±5mm or ±10mm | |
| Materials and specifications | Chamber | 316/316LMaterials , φ51mm，thickness TBD according to process pressure and process temperature |
| Float | 316/316L, available in F46 (FEP) out-lined | |
| Visual indicator | Aluminum or PA66 nylon. Front cover available in glass panel (standard) or acrylic sheet | |
| Installation conditions | Process pressure | Vacuum～10MPa |
| Process temperature | -40～350℃ | |
| Ambient temperature | -40～80℃ | |
| Output | Switch signal | Magnetic switch：220V AC 3A，SPDT |
| Continuous signal | Remote transmitter：4～20mA | |
| Process connection | Connection | Flange with customized dimension |
| Connection material | 316L | |
| End fitting | Upper vent | Standard flat welding cap. Flange, cocks, and 1 / 2” NPT ball valve available upon request |
| Lower drain | Standard 1 / 2” NPT ball valve. 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℃ | |
| Certificates and approvals | SIL Qualification | SIL2(HFT≥0)/SIL3(HFT≥1) |
| Ingress Protection | IP65, IP66/IP67 | |
| Explosion-Proof | Flameproof Enclosure：Ex d IIC T6 Gb（Magnetic switch and Remote transmitter） Intrinsic Safety：Ex ia IIC T6 Ga（Magnetic switch and Remote transmitter） |
● Brine filtration tank and wastewater tank in membrane electrolysis apparatus.
● Compound phosphate preparation tank in hydrogen peroxide apparatus.
● Various industrial waste water tanks.
