Description

The Tower Crane Torque Sensor is also called Tower Crane Load Moment Limiter. It is a vital electronic safety device monitoring the overturning moment generated by lifting loads. It measures the strain or elastic deformation of the crane’s main structural components, like the main chord, and automatically cuts off operations when the torque exceeds the preset limit. This protection system prevents structural damage and tipping accidents, ensuring the crane’s safe and stable performance on site.

Key Features of the Torque Sensor

1. High Precision and Sensitivity
   The sensor delivers rapid response and good accuracy, detecting even slight stress changes in the structure. It offers a repeatability error of less than ±5% and a total error below international standards.

2. Reliable Operating Principle
   The device amplifies the elastic deformation signal caused by load torque on the main chord. Once the torque limit is exceeded, it activates a micro switch to stop unsafe lifting operations instantly.

3. Excellent Environmental Adaptability
   Designed with IP54-rated rain protection, the sensor performs reliably in harsh outdoor environments. It operates steadily across a wide temperature range from –20°C to +65°C, making it suitable for year-round use.

4. Wide Application Range
   The Tower Crane Torque Sensor is compatible with hammerhead cranes, flat-top cranes, and luffing jib cranes. It is suitable for all tower cranes with rated load moments under 2000 tm, offering strong adaptability across models and brands.

Parameter of Tower Crane Load Moment Limiter

Model : BWL-D5A
Rated moment of applicable tower crane: Below 2000tm
Function Form: Auto
Repeat Precision: ＜±5%
Ambient temperature: -20℃~+65℃
Humidity: 95%RH (25℃)
Switch contact capacity: AC380V 0.79A   DC220V 0.14A
Number of Switches: 4-6, or customized 6.
Range of set point: 50%~110% rated torque
IP Grade: IP54