DEVICE FOR EQUIPMENT DIAGNOSTICS (MEASURING CHANNEL) Russian patent published in 2018 - IPC G01K7/00 G01H11/08 

FIELD: metrology.

SUBSTANCE: invention relates to vibrational metrology. Device for diagnosing equipment consists of a primary and a secondary converter. Primary converter contains a temperature sensor, a low-pass filter, a charge amplifier, a normalizing amplifier, an output stage, a vibration sensor, and an alternating voltage to current converter. Secondary converter contains a spark protection barrier, a buffer stage, a direct voltage to current converter, a proportional filter, a second buffer stage, a high pass filter, a bandpass filter, a peak detector, a second direct voltage to current converter, an integrator, a root mean square detector, a third direct voltage to current converter, a narrowband filter, second peak detector, average detector, logarithm, first and second buffer averaging stages, second logarithm. Vibration sensor consists of a piezo-bimorph, a bolt made of non-magnetic steel, precision washers. Case of the primary converter contains a threaded pin and a four-prong connector. Primary and secondary converters are connected by a communication line with a common shield. Temperature sensor is glued in a cylindrical recess in the inner part of the housing.

EFFECT: providing the possibility of a one-time measurement of the levels of low-frequency and high-frequency vibrations, as well as temperature.

8 cl, 3 dwg