FIELD: measuring equipment.
SUBSTANCE: invention relates to measurement equipment and can be used for diagnostics of measuring channel (MC), which measures object controlled parameter, in mode of continuous technological process. Diagnostics method of the measurement channel (MC) involves the following operations: receiving and recording into the archive at the current time T the readings R(T) of the diagnosed channel and the Si(T) readings of the adjacent channels, measuring parameters, indirectly dependent on parameter measured by diagnosed MC; simultaneously with the receipt and recording of readings in the archive at each current moment in time T, recording the presence of changes in the current value of the readings R(T) of the diagnosed MC relative to their archive value R(T-ΔTR) at the previous moment in time T-ΔTR, as well as presence of changes of current value of Si(T) readings of each adjacent MC relative to their archive value Si(T-ΔTSi) at the previous moment in time T-ΔTSi; if changes in the readings of the diagnosed MC are fixed in the absence of changes in the readings of adjacent MC, or changes in the readings of the adjacent MCs are recorded in the absence of changes in the diagnosed MC, a decision is made on the failure of the MC. At that, changes of the diagnosed MC and adjacent MC readings are fixed in case they exceed preset drift boundaries Rdr readings of diagnosed MC and Sidr drift readings of adjacent MC, respectively.
EFFECT: high efficiency of diagnosing MC relative to known methods, due to allowance for changes in monitored parameters, indirectly related to the parameter measured by the diagnosed MC, use for redundant and non-redundant MC in continuous process mode.
1 cl, 1 dwg
