Abstract: An arrangement is disclosed for measuring an environment parameter at a rotor of a rotary machine; according to some embodiments, the parameter to be measured is temperature and the machine to monitor is a turbomachine. The arrangement includes at least: a SAW or BAW device electrically coupled with an antenna, a parameter-sensitive impedance device, and two identical cables electrically coupling the SAW or BAW device respectively with the impedance device and a short-circuit or an open-circuit or a matching impedance device. The SAW or BAW device is located in a first zone of the rotor, while the parameter-sensitive impedance device is located in a second zone of the rotor remote from the first zone of the rotor. An interrogator can obtain environment parameter values by sending RF signals to the SAW or BAW device through the antenna.

Abstract: An arrangement is disclosed for measuring an environment parameter at a rotor of a rotary machine; according to some embodiments, the parameter to be measured is temperature and the machine to monitor is a turbomachine. The arrangement includes at least: a SAW or BAW device electrically coupled with an antenna, a parameter-sensitive impedance device, and two identical cables electrically coupling the SAW or BAW device respectively with the impedance device and a short-circuit or an open-circuit or a matching impedance device. The SAW or BAW device is located in a first zone of the rotor, while the parameter-sensitive impedance device is located in a second zone of the rotor remote from the first zone of the rotor. An interrogator can obtain environment parameter values by sending RF signals to the SAW or BAW device through the antenna.

Abstract: The coupling load measurement method allows to measure load between a first driving shaft and a second driven shaft connected by a hub coupled both with the first shaft and with the second shaft by at least one flexible coupling element coupled to the hub and to the first shaft and/or to the second shaft; the method comprises, during operation of the shafts, a measurement step of measuring a distance variation respect to a reference distance between a first flange of the hub and a second flange of the flexible coupling element and the step of using the measured distance variation for calculating the load.

Abstract: A dry gas seal for sealing the shaft of a turbomachinery, provided with means for the continuous health monitoring of the dry gas seal comprising one or more sensors adapted to measure strains and/or loads induced to the primary ring of the dry gas seal and/or strains induced to one or more of the elastic elements coupled to the primary ring and/or adapted to measure displacements of the primary ring or of an element coupled to the primary ring, for an early detection of failure of the seal, thus enabling main failures early detection capability and proactive maintenance actions.

Abstract: A dry gas seal for sealing the shaft of a turbomachinery, provided with means for the continuous health monitoring of the dry gas seal comprising one or more sensors adapted to measure strains and/or loads induced to the primary ring of the dry gas seal and/or strains induced to one or more of the elastic elements coupled to the primary ring and/or adapted to measure displacements of the primary ring or of an element coupled to the primary ring, for an early detection of failure of the seal, thus enabling main failures early detection capability and proactive maintenance actions.

Abstract: A probe for the measurement of the total pressure or temperature of a two phase wet gas flow is also disclosed. Embodiments provide a stem, a tip on the top of the stem, a cup serving as a shield is formed in the tip, a at least one tube or thermal element positioned within the cup serving as a measuring device for the incoming wet gas flow; at least one hole which passes through at least one wall of the cup; and a pressure changing device configured to accelerate the wet gas flowing around the cup. A method and system for the measurement of the total pressure or temperature of a two phase wet gas flow is also disclosed.

Abstract: The coupling load measurement method allows to measure load between a first driving shaft and a second driven shaft connected by a hub coupled both with the first shaft and with the second shaft by at least one flexible coupling element coupled to the hub and to the first shaft and/or to the second shaft; the method comprises, during operation of the shafts, a measurement step of measuring a distance variation respect to a reference distance between a first flange of the hub and a second flange of the flexible coupling element and the step of using the measured distance variation for calculating the load.

Abstract: The present probes are miniaturized, total pressure and total temperature, probes able to measure in wet gas conditions, two phase flow, inside pipes or compressor. When measuring in wet gas conditions, the probe measures accurately with a defined amount of liquid phase. Differently from standard probes, such probes are able to generate a gas expansion on the external side of the cup. This guarantees the appropriate purging of the liquid fraction of the flow from the cup, letting the total pressure measurement of the gas. The total temperature probe, beside the purging of the liquid collected, has a miniaturized cup in order to protect the measuring element from the direct impact of the liquid droplets. This permits to measure the total temperature of the gas, without influence of the liquid fraction of the flow.