Abstract: A method to determine a presence or absence of water in a cavity of a starter block having a non-horizontal surface of DC casting equipment including emitting a wave using a device containing a sensor, the wave propagating along a virtual beam path, directing the wave towards the cavity of the starter block such that the wave is reflected on a horizontal surface of the water, if water is present in the cavity, or is reflected on a non-horizontal surface of the cavity of the starter block, if no water is present in the cavity, detecting the reflected wave using the sensor, or not detecting the wave using the sensor, determining that there is water present in the cavity if the sensor detects the reflected wave, and determining that water is absent in the cavity if the sensor does not detect the wave while the sensor emits the wave.

Abstract: A method to determine a presence or absence of water in a cavity of a starter block having a non-horizontal surface of DC casting equipment including emitting a wave using a device containing a sensor, the wave propagating along a virtual beam path, directing the wave towards the cavity of the starter block such that the wave is reflected on a horizontal surface of the water, if water is present in the cavity, or is reflected on a non-horizontal surface of the cavity of the starter block, if no water is present in the cavity, detecting the reflected wave using the sensor, or not detecting the wave using the sensor, determining that there is water present in the cavity if the sensor detects the reflected wave, and determining that water is absent in the cavity if the sensor does not detect the wave while the sensor emits the wave.

Abstract: There is described an apparatus for monitoring at least a portion of a wellbore, the apparatus comprising a body including at least an anchoring means for releasably positioning the apparatus with respect to a tubular in the wellbore. The apparatus comprises detecting means for detecting at least one parameter of a substance in the portion, and in that the apparatus comprises transceiver means configured to at least transmit data related to the parameter.

Abstract: There is described an apparatus for monitoring at least a portion of a wellbore, the apparatus comprising a body including at least an anchoring means for releasably positioning the apparatus with respect to a tubular in the wellbore. The apparatus comprises detecting means for detecting at least one parameter of a substance in the portion, and in that the apparatus comprises transceiver means configured to at least transmit data related to the parameter.

Abstract: Sensor unit (30) for monitoring the state of fasteners, such as ratchet straps, chains, wires, ropes, bars or similar, which are being used for fastening and/or securing and/or anchoring one or more objects (20), which fasteners preferably includes fastening means (14, 104) and means (15, 100) for tensioning of the fasteners. The sensor unit (30) includes one or more measuring elements (32) for measuring tension force and/or tension and/or pressure and/or bending moment and/or shear force for the fastener and/or fastening means (14, 104) of the fastener and/or anchoring devices (22) for fasteners for monitoring the state of the fasteners.

Abstract: Sensor unit (30) for monitoring the state of fasteners, such as ratchet straps, chains, wires, ropes, bars or similar, which are being used for fastening and/or securing and/or anchoring one or more objects (20), which fasteners preferably includes fastening means (14, 104) and means (15, 100) for tensioning of the fasteners. The sensor unit (30) includes one or more measuring elements (32) for measuring tension force and/or tension and/or pressure and/or bending moment and/or shear force for the fastener and/or fastening means (14, 104) of the fastener and/or anchoring devices (22) for fasteners for monitoring the state of the fasteners.