The electronic microprocessor MOD. KONTAX KBC - KFC, are easily matched to the flow meter series KDN and allow the aggregation of totalisation and predetermination of all fluids up to 40,000 cps. They can be powered both AC 24 v 50 Hz or by lithium batteries 3.6 V. They are mounted directly on the pipe wall using brackets, directly on the flow meter. Used to realize practical filling stations drums, also trailerable, thus replacing the traditional scales