Abstract: A combination assembly is disclosed for managing a hose or like elastic pump tube or pump channel such that particularly is used in a peristaltic pump. The invention is characterized by having the pump equipped with an assembly for the adjustment of the pump pressure and/or compression imposed on the hose/tube, the assembly comprising a steplessly adjustable eccentric adjustment mechanism.

Abstract: The invention relates to a pinch valve comprising a housing (1), a sleeve (2), an actuator means (3), pinching jaws or the like valve-closing means (6). The invention is characterized in that the pinch valve has an indicator system adapted thereto for detecting a sleeve damage. The indicator system. comprises an electrode or the like indicating sensor element (10) embedded in the structure of the sleeve (2), or integrally forming a part thereof, having an area that covers the inner perimeter area of the sleeve (2) by its major parts.

Abstract: The method and the measuring system in accordance with the invention utilizes a measurement of electrical fields to determine the electrical characteristics of phases in a multi-phase mixture constituting a fluid flow through a conduit. This is used as part of the determination of the phase fractions. Further, one uses time-varying signals from at least one pair of detectors for the electrical characteristics of the fluid, combined with the use of a cross-correlation for determining one or several velocities in the flowing fluid. Additionally, one or several pressure drops are measured across, or adjacent to, a narrow passage. By combining measurements of the electrical characteristics, with measurements of pressure drop, the fractions of all phases in the flow are determined. Combined with measurements of the velocities, the volume flow rates are calculated for the phases and by further combining this with the mass densities of the phases, the mass flow rates of the phases are determined.