A Top Mounted Magnetic Level Indicator (MLI) is a highly reliable and accurate liquid level measuring instrument designed for continuous monitoring of liquid levels in tanks, vessels, reservoirs, and storage systems. Installed from the top of the tank, the instrument operates on the principle of buoyancy and magnetic coupling, providing clear and continuous level indication without direct contact between the process fluid and the display mechanism.
The system consists of a float containing a permanent magnet that moves along a guide pipe as the liquid level changes. The float's movement is magnetically transmitted to an external indicator assembly, which displays the liquid level accurately and continuously. This design ensures leak-free operation, excellent visibility, and minimal maintenance requirements.
Top Mounted Magnetic Level Indicators are especially suitable for underground tanks, overhead storage tanks, open tanks, and large vessels where side mounting is not possible or practical. They are widely used in industries such as water treatment, chemicals, pharmaceuticals, oil & gas, power generation, food processing, and petrochemicals.
Applications of Top Mounted Magnetic Level Indicator
- Water Storage Tanks
- Underground and Overhead Reservoirs
- Chemical Storage Tanks
- Oil and Fuel Storage Facilities
- Process Vessels and Reactors
- Water and Wastewater Treatment Plants
- Power Generation Plants
- Pharmaceutical Manufacturing Units
- Food & Beverage Processing Facilities
Features of Top Mounted Magnetic Level Indicator
- Continuous and accurate liquid level indication
- Top-mounted design for tanks and vessels
- Magnetic coupling for safe, leak-free operation
- No external power required for local indication
- Suitable for open, closed, underground, and overhead tanks
- Rugged construction for industrial environments
- Low maintenance and long service life
- Compatible with remote monitoring and alarm systems
Available Options
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Magnetic Flap Display System
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Customized Tank Calibration Scale
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High and Low Level Alarm Switches
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Continuous 4–20 mA Level Transmitter
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Weatherproof and Outdoor Installation Design
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Explosion-Proof Accessories
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Corrosion-Resistant Materials for Aggressive Chemicals
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Large-Diameter Floats for Low Specific Gravity Liquids
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Customized Mounting and Connection Arrangements
Specifications
| Parameter | Details |
|---|---|
| Product Name | Top Mounted Magnetic Level Indicator |
| Measuring Principle | Magnetic Float Operated Level Indication |
| Mounting Type | Top Mounted |
| Measuring Range | Up to 30 Meters (Higher on Request) |
| Float Material | SS 304, SS 316, Polypropylene, PVDF, HDPE |
| Guide Pipe Material | SS 304, SS 316, SS 316L, Carbon Steel |
| Chamber Material | SS 304, SS 316, SS 316L, Carbon Steel |
| Indicator Type | Magnetic Scale / Magnetic Flap Display |
| Accuracy | ±1% of Full Scale |
| Operating Pressure | Atmospheric to 40 Bar |
| Operating Temperature | -20°C to +350°C (Depending on Design) |
| Connection Type | Flanged or Threaded |
| Scale Calibration | mm, cm, Meters, Liters, Percentage, Volume |
| Power Requirement | Not Required for Local Indication |
| Optional Outputs | Reed Switches, Level Alarms, 4–20 mA Transmitter |
| Protection Class | IP65 / IP67 (for Accessories) |
| Compliance | ASME, DIN, ISO, Industrial Standards |
Benefits
Top Mounted Magnetic Level Indicators provide a dependable and maintenance-free solution for monitoring liquid levels in tanks and vessels where side-mounted instruments are not feasible. Their magnetic coupling technology ensures safe, leak-proof operation while offering clear and accurate level indication. With optional alarm switches and transmitter outputs, these indicators can easily integrate into automated control systems, helping improve process efficiency, inventory management, and operational safety across various industries.