Abstract: A flow sensor configured to measure the flow of a fluid flowing through a tubular structure comprises a first detection unit that is configured to detect flows above a predefined lower flow level representing the lowest flow that can be measured by the first detection unit and a second detection unit that is configured to estimate the flow below the lower flow level (on the basis of the temperature difference between the surroundings and a fluid). The second detection unit is configured to estimate the flow below the lower flow level on the basis of one or more measurements made in a flow-calibration-area in which the flow sensor can detect the flow and in which the flow depends on the temperature difference.

Abstract: An ultrasonic flow sensor is configured to determine the time-of-flight of ultrasonic waves and calculate a change in the speed of sound on the basis of the time-of-flight, to calculate the expected change in speed of sound as a function of the detected temperature of the fluid, to determine if the expected change in speed of sound corresponds to the change in the speed of sound calculated on the basis of the time-of-flight; and to identify a no-flow state, in which there is no flow of the fluid when the expected change in the speed of sound corresponds to the change in the speed of sound calculated on the basis of the time-of-flight, and a temperature difference between the surroundings and the fluid is below a predefined level which is pre-set at a fixed level between 0.01 degree Celsius and 0.5 degree Celsius.

Abstract: A system for detecting insulation defects in an underground power cable comprising one or more single conductors surrounded by an electrically conducting shield. The system comprises one or more external sensors clamped onto the outside of or arranged in the proximity of the power cable. The sensors are configured to provide two or more current measurements from the outside of the power cable without being electrically connected to any of the one or more conductors of the power cable. A signal processing unit of the system is adapted to use a mathematical statistical model that processes measurements made by the sensors to identify if the current measurements are caused by a partial discharge event from a leakage structure in the power cable.

Abstract: A power quality analysis system is configured to carry out a power quality analysis in an electrical environment. The system comprises one or more power consuming units each electrically connected to a main power supply by a multiconductor (multicore) cable and one or more power quality sensors configured to provide one or more power quality analysis measurements. The one or more power quality sensors are clamp-on power quality sensors configured to provide one or more power quality analysis measurements when the clamp-on power quality sensors are clamped onto the outside of or arranged in the proximity of the multiconductor cable. The clamp-on power quality sensors are configured to provide the one or more power quality analysis measurements without being electrically connected to any of the conductors of the multiconductor cable.

Abstract: An energy harvesting device is configured to surround a portion of an electrical cable (4), and includes a plurality of electrically separated and electrically conducting patch members (22, 22?, 24, 24?, 26, 26?) configured to be arranged in such a manner that an electric potential difference (V) is provided between a first outlet point (B) and a second outlet point (A). The patch members (22, 22?, 24, 24?, 26, 26?) are electrically connected to the first outlet point (B) and to the second outlet point (A). The patch members (22, 22?, 24, 24?, 26, 26?) are configured to be attached non-invasively direct onto the electrical cable (4).

Abstract: A system (2) for monitoring resource flows at a number of devices (D1, D2, D3) includes a receiving unit (4) which receives data from a number of sensors (S1, S2, S3, S4, S5) configured to detect the flow rate and/or the change in the flow rate at device level, and a number of meters (M1, M2, M3) configured to measure the flow for at least a part of the devices (D1, D2, D3). The system (2) has a calculation module (8) configured to receive information from the sensors (S1, S2, S3, S4, S5) and the meters (M1, M2, M3), and the calculation module (8) includes a mathematical statistical model (38) configured to estimate and/or predict flow of resource and/or performance (e.g., activity) of at least a selection of the devices (D1, D2, D3).

Abstract: An energy harvesting device is configured to surround a portion of an electrical cable (4), and includes a plurality of electrically separated and electrically conducting patch members (22, 22?, 24, 24?, 26, 26?) configured to be arranged in such a manner that an electric potential difference (V) is provided between a first outlet point (B) and a second outlet point (A). The patch members (22, 22?, 24, 24?, 26, 26?) are electrically connected to the first outlet point (B) and to the second outlet point (A). The patch members (22, 22?, 24, 24?, 26, 26?) are configured to be attached non-invasively direct onto the electrical cable (4).

Abstract: A system (2) for monitoring resource flows at a number of devices (D1, D2, D3) includes a receiving unit (4) which receives data from a number of sensors (S1, S2, S3, S4, S5) configured to detect the flow rate and/or the change in the flow rate at device level, and a number of meters (M1, M2, M3) configured to measure the flow for at least a part of the devices (D1, D2, D3). The system (2) has a calculation module (8) configured to receive information from the sensors (S1, S2, S3, S4, S5) and the meters (M1, M2, M3), and the calculation module (8) includes a mathematical statistical model (38) configured to estimate and/or predict flow of resource and/or performance (e.g., activity) of at least a selection of the devices (D1, D2, D3).