Basic Function and Working Principle of Marine Magnetic Float type Level Gauge Model UHZ-511
The Marine Magnetic Float Type Level Gauge Model UHZ-511 is a highly reliable and widely used instrument for measuring liquid levels in tanks aboard ships and offshore platforms. Its robust design and magnetic coupling principle make it ideal for the challenging marine environment.
Overview
The UHZ-511 operates on a simple and highly reliable magnetic coupling principle.
• The Float: A float, designed to be buoyant in the specific liquid being measured, moves up and down with the liquid level inside a main chamber (or "standpipe") connected to the tank.
• The Magnetic System: Inside the float, a strong permanent magnet is housed.
• The Indicator: On the outside of the chamber is a semi-circular or elongated indicator panel. This panel contains a series of lightweight, magnetized flags or flaps, often bi-colored (e.g., red on one side, white/silver on the other).
• The Coupling: As the float moves, the internal magnet exerts a force on the magnetized flags.
This causes them to rotate 180 degrees as the magnet passes by.
◦ The portion of the indicator above the liquid level will show one color (e.g., red).
◦ The portion at and below the liquid level will show the other color (e.g., white).
Main Technical Specifications
Specification Category | Details |
Model | UHZ-511 (Note: Suffixes like -C, -P, -S may denote different flange standards or options) |
Type | Magnetic Float Level Gauge / Magnetic Level Indicator |
Application | Marine & Offshore Vessels |
Measuring Range (L) | Standard: 300 ~ 6000 mm. Custom lengths are available upon request. |
Chamber Material | Body/Chamber: 304 Stainless Steel (SUS304), 316 Stainless Steel (SUS316/L), or other alloys for corrosive media. |
Flange Standard | DIN, JIS, ANSI, GB, or other international standards to match the tank nozzle. |
Flange Rating (Pressure) | Commonly PN16, PN25, PN40 (DIN) or Class 150, Class 300 (ANSI). |
Pressure Rating | Standard: Up to 4.0 MPa (580 psi, ~40 bar). High-Pressure Models: Available for higher pressures. |
Temperature Rating | Standard: -20 ~ +200 °C (-4 ~ +392 °F). High-Temp Models: Available for up to ~450 °C. |
Common Marine Applications
The UHZ-511 is ubiquitous on ships and offshore platforms. You will typically find it on:
• Fuel Oil Tanks (Service, Settling, Daily)
• Diesel Oil Tanks
• Lube Oil Tanks (Main Engine, Generators)
• Fresh Water Tanks
• Sea Water/Ballast Tanks
• Bilge Wells
• Sludge Tanks
• Chemical Tanks (e.g., anti-fouling, treatment chemicals)
