SZ-M100 Mobile Crane LMI

Product Overview
The SeeZol Mobile Crane Load Moment Limiter, also termed Crane Load Moment Indicator (LMI) or Crane Safe Load Indicator (SLI), is a core safety monitoring accessory for telescopic mobile cranes. It integrates high-precision angle sensors, length detectors, and pressure sensors to synchronously monitor real-time lifting load, boom length, luffing angle, and working radius.
The intuitive onboard HMI displays all operational parameters in real time, helping operators keep every lifting operation within the factory design safety parameters. Once the load moment exceeds the rated threshold, the system triggers instant audible and visual alarms and cuts off dangerous lifting movements automatically to prevent tipping and structural damage. Featuring shockproof and electromagnetic-interference resistance, it fits truck cranes, rough-terrain cranes, and crawler cranes for port, construction, and mining lifting scenarios.
Applicable Models
Mobile cranes 10–100 ton (truck, rough-terrain, and crawler cranes).
Key Features
- Real-time weight, height, and torque display
- Overload alarm and automatic control
- Historical data record
- Shockproof, EMI-resistant design
- Fits truck / rough-terrain / crawler cranes
System Parameters
- Range: 5 ~ 260 t
- System error: ±3%
- Display error: ±5%
- Mode: Dynamic weighing
- Protection level: IP65
- Working temperature: -20℃ ~ +70℃
- Working voltage: DC 9–36V
Main Components
- Cabin display (HMI)
- Boom length sensor
- Boom angle sensor (inclinometer)
- Hydraulic pressure sensor
- Control unit / processor
Application Case
A wind-energy contractor runs SeeZol mobile-crane LMIs for component lifts, with the system enforcing the correct capacity at each radius during nacelle and blade installation.








