4 inch pipe CSF-counter



World´s largest wellboat equipped with 4 AquaScan 20 inch pipe CSF-counters.

The 4500mMS Ro Fjell built at Aas Mek. Verksted AS, is owned and operated by Rostein AS.



The CSF-series are a line of counters made for moving large amounts of fish at high speeds in pipeline systems that are completely filled with water.

Even with the high speed and efficiency, the fish will experience a minimum of stress. The CSF-counters are simply connected to existing pipes, becoming just another short pipe for the fish to pass. All CSF-units has a built in surveillance camera for complete control of the counting.

These counters are made primarily for well-boats and larger onshore sites with continuous-flow pumps large enough to be able to deliver a steady waterflow at high speeds.

The CSF counters are a result of several years of experience and development in imaging technology with pipe/water arrangements.

The core of the patented CSF-technology is measuring fish in a circular pipe filled with water. The advantage is a complete arrangement with circular pipes from beginning to end.