LM400 Magnetic Level Gauge

Product Description

The LM400 series magnetic level gauge consists of a measuring body, indicator column (with red/white magnetic flags), float, and flange cover, designed for liquid level measurement in various containers. Suitable for high-temperature, explosion-proof, corrosive, and food-grade applications.

Working Principle

Utilizes top-mounted or side-mounted installation

Magnetic coupling system transfers liquid level changes to:

Visual indicators (rotating flags)

Level switches (alarm contacts)

Transmitters (4-20mA output)

Float movement drives magnetic flags to rotate 180° for clear level indication

Key Features

Category Specification

Measurement‌ Continuous level indication with no blind zones

Construction‌ Fully isolated design between medium and indicator

Materials‌ Available in stainless steel, PTFE, or other corrosion-resistant alloys

Options‌ Integrated with

• Alarm switches

• 4-20mA transmitters

• Explosion-proof certifications

Technical Parameters

Pressure Rating:‌ Up to 16MPa

Temperature Range:‌ -196°C to +450°C

Accuracy:‌ ±10mm

Output Signals:‌

Switch: SPDT 250VAC/5A

Analog: 4-20mA with HART protocol

Typical Applications

Chemical/petrochemical processing

Power generation boilers

Food & pharmaceutical storage

Wastewater treatment

Installation Notes

Requires vertical mounting (±3° tolerance)

Minimum fluid density: 0.45g/cm³

Avoid strong magnetic interference