Abstract: Provided is a state monitoring system that monitors a state of an apparatus provided in a wind turbine, including a wireless measuring unit including a sensor provided to the apparatus, and a data collection. The wireless measuring unit includes a memory storing measured data obtained from the sensor, and a wireless communication unit transmitting the measured data obtained from the sensor to the data collection device. When the data collection device has not been able to receive the measured data from the wireless measuring unit, the data collection device requests the wireless measuring unit to retransmit the measured data.

Abstract: Provided is a state monitoring system that monitors a state of an apparatus provided in a wind turbine, including a wireless measuring unit including a sensor provided to the apparatus, and a data collection device. The wireless measuring unit includes a memory storing measured data obtained from the sensor, and a wireless communication unit transmitting the measured data obtained from the sensor to the data collection device. When the data collection device has not been able to receive the measured data from the wireless measuring unit, the data collection device requests the wireless measuring unit to retransmit the measured data.

Abstract: A wind turbine includes vibration sensors for detecting conditions of apparatuses in the wind turbine. Each of detection outputs of the vibration sensors is transmitted to an information processing device. The information processing device is arranged inside a support column of the wind turbine. The information processing device transmits the detection outputs to a management server over a network.

Abstract: A condition monitoring system that diagnoses an abnormality of an apparatus provided in a wind turbine includes a monitoring apparatus including a sensor provided for the apparatus, a monitoring-side control apparatus that sets a threshold value to be used by the monitoring apparatus for diagnosing the abnormality of the apparatus, and diagnoses the abnormality of the apparatus based on the threshold value, and a monitoring terminal that monitors a condition of the apparatus. The condition monitoring system can correctly diagnose an abnormality of the apparatus provided in the wind turbine.

Abstract: Provided is a monitoring system for monitoring states of apparatuses of a wind turbine which achieves further cost reduction. The monitoring system for the wind turbine includes: microphones arranged inside a nacelle holding a main shaft, a gearbox, a power generator, and a main bearing of the wind turbine therein to obtain acoustic data; a data collection device (data collection unit) which collects the data and transfers the data to a server on the Internet; the server (comparison and diagnosis unit) which saves, compares, and diagnoses the transferred data; and a monitoring terminal (display monitoring unit) which displays and monitors the result of diagnosis.

Abstract: A condition monitoring system that diagnoses an abnormality of an apparatus provided in a wind turbine includes a monitoring apparatus including a sensor provided for the apparatus, a monitoring-side control apparatus that sets a threshold value to be used by the monitoring apparatus for diagnosing the abnormality of the apparatus, and diagnoses the abnormality of the apparatus based on the threshold value, and a monitoring terminal that monitors a condition of the apparatus. The condition monitoring system can correctly diagnose an abnormality of the apparatus provided in the wind turbine.

Abstract: Apparatus for calcining wet powdery gypsum which comprises:(A) a furnace which generates a hot gas having a temperature higher than 900.degree.

Abstract: Apparatus comprising means for dispersing comminuted limestone in a stream of hot gas and calcining it to form quicklime; a calcining chamber into which comminuted gypsum and the stream of hot gas containing the quicklime are introduced wherein the gypsum is calcined and thoroughly mixed with the quicklime; a gas-solids separator for separating the calcined gypsum and quicklime from the gas stream; and hydration means for hydrating the quicklime and gypsum whereby any phosphoric acid in the gypsum reacts with the hydrated quicklime to form insoluble calcium phosphate.