Sick Bulkscan laser scanner

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Sick’s Bulkscan can measure volume and mass flows without contact, increasing system availability and avoiding mechanical wear. It also prevents wear by transmitting data on uneven belt loads and belt drift.

A laser scanner mounted above the conveyor belt uses laser pulses to continuously detect the height profile of the bulk materials passing by. The laser beam is eye safe and corresponds to Laser Class 1.

The two-dimensional height profile obtained is combined with supplementary information, such as the third dimension of belt speed or density information, and the sensor autonomously determines the transported volume or mass per time unit. At the same time, the height distribution can be used to reliably detect tilting or any one-sided loading so that a warning signal can be transmitted.

The Bulkscan uses multiecho technology, whereby the software algorithm can reliably determine the correct signal from among the various reflected laser pulses and dependably suppress the measurement of interfering echoes caused by mist or rain.

Rapidly moving transport belts with speeds of up to 30 m/s can be measured as a result of the device’s rapid scan frequencies of up to 75 Hz and fast response times.

For the further processing of signals, the Bulkscan system offers six switching outputs that can be individually occupied as well as continuous outputs such as transmission of measurement values via TCP/IP (ethernet). The processing and preparation of measurement values takes place directly in the sensor, which also has two inputs. No supplementary measurement value computer is required.