Abstract: The diagnostic device that detects a failure of a sensor. The sensor includes memory for repeatedly recording pairs of two absolute pressure values, the absolute pressure values being related to absolute pressures in the first and the second impulse lines, respectively. A processor repeatedly computes, from a prescribable number of pairs of the two absolute pressure values, a correlation value representative of the correlation between the two absolute pressure values. The processor can also compare correlation values to at least one correlation threshold value, and generate a diagnostic output depending on the result of the comparison. It is possible to derive the absolute pressure values from one differential pressure measurement and one absolute pressure measurement.

Abstract: A method and diagnostic device are disclosed which can receive process variable values (x(t)) of a process variable of a process medium of a process, and extract and record measurement statistics data from such process variable values, which are measured during a measuring phase. Training statistics data can be extracted and recorded from such process variable values, which are measured during a training phase. The measurement statistics data can be compared with training statistics data recorded before the measurement statistics data. The training statistics data can include a training empirical statistical distribution, which can be a distribution of a function of process variable values, which are measured during a training phase, or a distribution of a function of coefficients Xt(k), which are coefficients of a function of a transform of process variable values (x(t)), which are measured during a training phase.

Abstract: The diagnostic device for detecting a failure of a sensing means, which sensing means comprises a recording means for repeatedly recording pairs of two absolute pressure values, the absolute pressure values being related to absolute pressures in the first and the second impulse lines, respectively, a computation means for repeatedly computing, from a prescribable number of pairs of the two absolute pressure values, a correlation value representative of the correlation between the two absolute pressure value, a comparison means for comparing correlation values to at least one correlation threshold value, and an output means for outputting a diagnostic output depending on the result of the comparison. It is possible to derive the absolute pressure values from one differential pressure measurement an one absolute pressure measurement.

Abstract: The diagnostic device comprises a receiving means for receiving process variable values (x(t)) of a process variable of a process medium of a process, a measurement processing means for extracting and recording measurement statistics data from such process variable values, which are measured during a measuring phase, a training processing means for extracting and recording training statistics data from such process variable values, which are measured during a training phase, and a comparison means for comparing the measurement statistics data with training statistics data recorded before the measurement statistics data. Preferably, the training statistics data include a training empirical statistical distribution, which can be a distribution of a function of process variable values, which are measured during a training phase, or a distribution of a function of coefficients Xt(k), which are coefficients of a function of a transform of process variable values (x(t)), which are measured during a training phase.

Abstract: A digital protection and control (P & C) device for a power distribution network, which comprises a computerized control unit comprising a microprocessor. The P & C device, according to the present invention, further comprises an external computerized palmtop computerized device, including a human-machine interface (HMI), which comprises a software communication platform. This software communication platform is aimed at exchanging, by means of a predefined communication channel, data/information related to the software configuration of the HMI and data/information related to the operating status of the P & C device.

Abstract: A High Speed Transfer System which comprises three Protection and Control devices. A first and a second of said Protection and Control devices are used for failure detection on the feeder bus-bar; the third of said Protection and Control devices is used for the High Speed Transfer System co-ordination functionalities.

Abstract: A High Speed Transfer System which comprises three Protection and Control devices. A first and a second of said Protection and Control devices are used for failure detection on the feeder bus-bar; the third of said Protection and Control devices is used for the High Speed Transfer System co-ordination functionalities.