SZ-AB100 Articulated Boom Crane LMI

Product Overview

The SeeZol Articulated Boom Crane Load Moment Indicator, also known as crane LMI or crane Safe Load Indicator (SLI), is a safety protection device applied to boom-type lifting machinery. It prevents accidents caused by overload and operation errors, bringing crane use to a standardized and scientific level. In essence it is a safety accessory that provides overload protection—once the lifting torque exceeds the limit, it can automatically break and stop the action to protect the equipment.

Because articulated (knuckle-boom) cranes have multiple boom sections and complex geometry, the LMI fuses several angle and pressure inputs to compute the true lifting moment and enforce the rated capacity envelope through every articulation. It prevents overload and tipping for forestry, truck-mounted, and industrial lifting where the boom folds and swings in tight spaces.

Applicable Models

Knuckle-boom cranes, articulated cranes, and truck-mounted folding cranes.

Key Features

• Real-time data display: weight, height, radius, angle

• Overload and over-range danger warning

• Overload record storage (approx. two weeks)

• Customizable wireless transmission for remote safety monitoring

• Multi-section boom moment calculation

System Parameters

• Working voltage: DC 12–36V

• Working temperature: -20℃ ~ +70℃

• Storage temperature: -20℃ ~ +70℃

• System error: ±3%

• Display error: ±5%

• Relay contact capacity: AC220V 3A

• Protection level: IP65

Main Components

• Cabin display (HMI)

• Hydraulic pressure sensor

• Angle sensor (per boom section)

• Control unit / processor

Application Case

A forestry operator deployed SeeZol articulated-boom LMIs on truck-mounted cranes, preventing overload during log handling where boom geometry changes constantly.