There are a few businesses where the level location of slime or solids inside fluids is required. For illustration inside dregs tanks/containers, channels or lamella separators inside the metal industry, chemical plants, in limestone or rock plants and inside the wastewater industry. This necessity depends completely on the exactness and soundness of the sensor. In numerous of these circumstances, the nearness of contamination, chemicals and gasses cruel that the sensors must have specific resistance. The Nivobob arrangement 3300/3400 meet the wants of numerous interface estimations. Their straightforward and direct measuring guideline guarantee add up to unwavering quality. The level assessment and checking is by means of an analog flag 4-20mA and Modbus RTU / Profibus DP interface.