Abstract: Method and device that by acoustic signal energy—generated by a flowing medium, detects characteristic properties, amounts and the individual distribution between several components/phases, i.e. liquids, gases, particles or any distribution individual and between these. The flowing medium is decided to pass through at least one in a pipe system installed flow conditioner that has at least one restriction and by said passing is decided to release acoustic signal energy. The flow conditioner is installed in such a way that it in an acoustic and/or thermal way is totally or partly isolated from upstream and downstream adjoining sections of the pipe system and/or surrounding construction details.

Abstract: Method and device that by acoustic signal energy- generated by a flowing medium, detects characteristic properties, amounts and the individual distribution between several components/phases, i.e. liquids, gases, particles or any distribution individual and between these. The flowing medium is decided to pass through at least one in a pipe system installed flow conditioner that has at least one restriction and by said passing is decided to release acoustic signal energy. The flow conditioner is installed in such a way that it in an acoustic and/or thermal way is totally or partly isolated from upstream and downstream adjoining sections of the pipe system and/or surrounding construction details.

Abstract: A method for determining the flow situation in a transport system where the flow medium occurs in multi-phase and is conducted through a structural detail such as a choke valve, which acts on the flow of the medium and produces turbulence causing acoustic energy signals which are generated in and immediately close to the structural detail. The acoustic energy signals are sensed by one or a plurality of acoustic sensors with an acoustic broad-band connection with the structural detail. The sensor converts the energy signal to transmittable signals to a signal processing unit utilizing known signal analysis principles to provide interpretable information on the actual flow situation and the flowing medium which is influenced by the structural detail. The structural detail to which the acoustic sensor is connected may be incorporated in a subsea production system.

Abstract: A measuring device for determination of the distribution and position of different material compositions, preferably liquids and gases, with the aid of the thermodynamic properties of the material. Through the arrangement of sensor elements as sectors on the inside of a hollow body, it is possible to record the flow direction of the medium being measured at different levels.

Abstract: An arrangement for a distribution and/or an extraction of signals to and from a number of connection points is connected to a common current circuit. The connection points may, in one embodiment, comprise a number of sensors operating as a time division multiplex channel system signaled by switching elements. The sensors represent separately sensed inputs on the common current circuit by output current pulses of short duration. A switching sequence for the switching elements is, in particular, a make before break sequence making it possible to distribute signals of more than one switching element to the same connection points, and, consequently, to construct a multi-dimensional structure of combinatorial circuits.

Abstract: A manually operable measurement apparatus for measuring level, temperature and transition zone between two different liquids. The measurement is carried out by letting a probe through a sluice and valve means into a tank. The probe is combined in one unit and is sensitive to both relative dielectric constant and loss factor as well as the temperature of the surrounding medium(s) to be measured. The invention is particularly suitable for measurement in tanks having an internal pressure being different from the atmospheric pressure and in explosive environments.

Abstract: An apparatus for measuring acoustic transmission characteristics of at least one medium to be measured in which at least one elongated hollow chamber is immersed. The chamber is closed at its bottom end and is filled with an acoustic connecting liquid, and at least two separate movable transducers are immersed in the connecting liquid within the chamber in spaced relation to the wall thereof, the chamber having a cross-sectional shape such that a directional acoustic path between opposite emitter and collector transducers passes through the medium to be measured, the medium being out of direct contact with the transducers.

Abstract: Apparatus for measuring the level of a substance in a container of substantial depth which is practical, efficient, and rugged. Sonic or acoustic waves are transmitted through relatively sonic-wave propagating members, from an emitter member immersed in the substance whose level is to be determined to a collector also immersed in that substance. For this purpose, a sonic generator applies waves to an emitter portion of the wave-propagating means, and a collector portion of the wave-propagating means collects such emitted waves and applies them to a detecting means for producing indications of the level of the substance. The detecting means provide such indications on the basis of the relationship between the emitted and collected waves. The emitter and collector are each in the form of a rigid member capable of longitudinal wave propagations and are of substantially U-shaped horizontal cross-section.