Crawler Crane Load Moment Indicator

The crawler crane LMI also known as crane Load Moment Indicator (LMI) or crane Safe Load Indicator (SLI) is a safety protection device for jib crane machinery. This product uses a 32-bit high-performance microprocessor as the hardware platform. The software algorithm adopts the most advanced hydraulic power take-off algorithm in China. The algorithm draws on years of field experience. Continuous improvement and refinement.

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SZ-C100 Crawler Crane LMI

Product Overview

The SeeZol Crawler Crane Load Moment Indicator, also known as crane Load Moment Indicator (LMI) or crane Safe Load Indicator (SLI), is a safety protection device for jib crane machinery. The product uses a 32-bit high-performance microprocessor as the hardware platform, and the software algorithm adopts an advanced hydraulic power take-off algorithm refined through years of field experience.

It provides the operator with effective real-time operation information—weight, height, torque, and radius—so the crawler crane can be used effectively within its design parameters, preventing overload and overturning accidents during heavy and long-reach lifts.


Applicable Models

Crawler cranes 5–260 ton.


Key Features

  • Real-time weight and height display
  • Torque display
  • Overload alarm and control with output cut-off
  • Historical data logging
  • 32-bit microprocessor platform, field-proven algorithm

System Parameters

  • Range: 5 ~ 260 T
  • Systematic error: ±3%
  • Display error: ±5%
  • Mode: Dynamic weighing
  • Degree of protection: IP65
  • Operating temperature: -20℃ ~ +70℃
  • Operating voltage: DC 9–36V

Main Components

  • Cabin display (HMI)
  • Hydraulic pressure sensor
  • Boom length / angle sensor
  • Control unit / processor

Application Case

A heavy-lift contractor uses SeeZol crawler-crane LMIs on long-boom configurations, with the system enforcing rated capacity by radius during precast and steel-erection work.

       

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