Patent ID: 9267814
Filing Date: 2016-02-23
CPC Classification: G01D

Claim Text:
1. A system for determining offsets of all types of measuring instruments and instrumentations, the system being composed of: first processing means adapted to compute, from at least one value of a measuring signal deriving from an instantaneous measure performed by at least one measuring instrument or a sensor, at least one offset value of the measuring signal; and second processing means adapted to subtract the offset value from the value of the measuring signal to obtain a corrected measure value of the measuring signal, wherein the measuring instruments are adapted to perform measures with a mean value that is null or constant, measuring the systematic errors depending from environmental conditions and ageing of the measuring sensors, the first processing means comprising means for computing a moving, possibly weighted, mean of the value of the measuring signal to determine the offset value, wherein the first processing means comprise at least one numeric low-pass filter of the Finite Impulse Response type or of the Infinite Impulse Response type implemented by a PLC adapted to determine the offset value from the value of the measuring signal.