Elevator Overload Sensor

An elevator overload sensor is a safety device that detects when the load inside the elevator exceeds its rated capacity and prevents unsafe operation.

It measures the weight in the elevator car using load cells or pressure sensors and sends a signal to trigger an alarm or stop the elevator when the limit is exceeded.

It can be installed under the cabin floor, in the suspension ropes, or integrated into the cabin frame, depending on the design.

It ensures passenger safety, prevents mechanical strain, and complies with elevator safety standards and regulations.

The sensor triggers an audible/visual alarm, and in most systems, the elevator doors remain open until the extra weight is removed.

Yes, they provide high accuracy to ensure reliable detection, usually within ±2% of rated load capacity.

The main types include load cell-based sensors, rope tension sensors, and hydraulic pressure sensors.

Yes, many models are designed for retrofit installation to upgrade existing elevators with overload protection.

Yes, calibration is necessary to ensure correct weight detection and long-term reliability.

Yes, overload sensors are suitable for passenger elevators, freight elevators, and dumbwaiters.

No, they are low-power devices designed to integrate seamlessly with the elevator control system.

They require minimal maintenance, apart from periodic calibration and functional checks.

Yes, modern sensors can provide both analog and digital outputs, and some even offer connectivity with microcontroller-based elevator systems.

They are widely used in residential, commercial, industrial, and hospital elevators to ensure passenger and equipment safety.

With proper installation and calibration, an elevator overload sensor can last for many years without performance issues.