Length transmitter for Terex cranes

The length transmitter 00139912 is an electronic sensor used in the control systems of Terex cranes. Its primary function is to measure the precise extension or deployment of the telescopic boom. This data is transmitted to the load moment indicator or load moment protection system, which calculates the load moment and ensures the machine operates within its defined safety parameters.

This component is compatible with various Terex mobile cranes, including all-terrain, rough-terrain, and crawler models equipped with telescopic booms. It functions by utilizing a cable wound on a drum connected to a rotary sensor, such as a potentiometer or encoder. As the boom extends, the cable unwinds, and the sensor converts the drum rotation into an electrical signal proportional to the extension length.

Length transmitters serve as the primary feedback mechanism for boom position in crane control systems. By providing continuous, accurate measurements of the boom length, these sensors allow the control system to adjust load charts and stability calculations in real time. Maintaining an accurate length signal is necessary for the proper operation of the crane's safety systems during lifting tasks.