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.









