Which parameter is typically not indicated by LMIs?

Which parameter is typically not indicated by LMIs?

• A. Levelness
• B. Load weight
• C. Boom angle
• D. Temperature

Answer: (A)

Load Moment Indicators (LMIs) are focused on the lifting situation: they monitor the load being lifted, the boom angle, and the radius to calculate the load moment and ensure the crane operates within safe capacity. They may also display factors like oil temperature or other conditions that can affect safe lifting, because those conditions can change how much load is safe to lift. Levelness, on the other hand, is about the crane’s support against tipping—whether the crane is on a level surface. That information comes from separate level or inclinometer systems and outriggers status, not from the LMI. Since LMIs derive safety limits from load weight, boom angle, and radius, they do not typically indicate levelness.

Load Moment Indicators (LMIs) are focused on the lifting situation: they monitor the load being lifted, the boom angle, and the radius to calculate the load moment and ensure the crane operates within safe capacity. They may also display factors like oil temperature or other conditions that can affect safe lifting, because those conditions can change how much load is safe to lift.

Levelness, on the other hand, is about the crane’s support against tipping—whether the crane is on a level surface. That information comes from separate level or inclinometer systems and outriggers status, not from the LMI. Since LMIs derive safety limits from load weight, boom angle, and radius, they do not typically indicate levelness.