I&C Analog Electronic Controller - Calibration

PM T a sk Report 6/21/2010 Component Type: I&C - Analog Electronic Controller Ta sk Name: Calibration Criticality Critical Minor Duty Cycle High Low High Low High Low High Low Service Conditions Severe Mild Severe Mild CHS CLS CHM CLM MHS MLS MHM MLM 18M NA 3Y NA 6Y NA AR NA Task Objective Calibration assures that the device is performing within specification and confirms traceabilit! to N"#$ standards in demonstrating t he absolute accurac! of the output% $he interval is not w ell determined b! the failure timing data% Ta sk Co ntent Calibration should include the following& ' A vi sual inspection should be performed to chec( for tightness of the connections general cleanliness proper mechanical alignments free movement of the mechanical assembl! cor roded edge connectors over heated components on printed circuit boards lea(ing capacitors and crac(ed terminations and cases% ' )erif! and ad*ust as needed the device+s ,ero span% ' )erif! and ad*ust as needed the device+s linearit! h!steresis% ' "t is strongl! suggested that a minimum - point calibration response chec( be performed a . point chec( should be considered for more critical devices% Principle ail!re "o cation #n$ Ca!ses: Calibration is focused on correcting drift especiall! when it can no longer be compensated b! the controler and also addressing longer term wearout failures of electronic subcomponents% Pro%ression O& 'e%ra $ation (n Ti me: $he drift is primaril! age related/ longer term wearout failures of electronic subcomponents are addressed b! detecting the decreasing abilit! to reset the drift% )!pport or T*e T ask (nterval # n$ Relation T o Ot*er T asks : $he degradation mechanisms addressed effectivel! are the aging processes causing drift and failure of electronic subcomponents% 0ecause the controler will compensate for drift to some maimum etent Calibration is less critical for controllers than for other "2C components% EPRI PM Basis Database - PM Program Report Pa%e 1 o& 1

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7/24/2019 I&C Analog Electronic Controller - Calibration

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PM Task Report 6/21/2010

Component Type: I&C - Analog Electronic Controller

Task Name: CalibrationCriticality Critical Minor

Duty Cycle High Low High Low High Low High Low

Service Conditions Severe Mild Severe Mild

CHS CLS CHM CLM MHS MLS MHM MLM

18M NA 3Y NA 6Y NA AR NA

Task ObjectiveCalibration assures that the device is performing within specification and confirms traceabilit! to N"#$standards in demonstrating the absolute accurac! of the output% $he interval is not well determined b!the failure timing data%

Task Content Calibration should include the following&' A visual inspection should be performed to chec( for tightness of the connections general cleanlinessproper mechanical alignments free movement of the mechanical assembl! corroded edge connectorsover heated components on printed circuit boards lea(ing capacitors and crac(ed terminations andcases%' )erif! and ad*ust as needed the device+s ,ero span%' )erif! and ad*ust as needed the device+s linearit! h!steresis%' "t is strongl! suggested that a minimum - point calibration response chec( be performed a . pointchec( should be considered for more critical devices%

Principle ail!re "ocation #n$ Ca!ses:Calibration is focused on correcting drift especiall! when it can no longer be compensated b! thecontroler and also addressing longer term wearout failures of electronic subcomponents%

Pro%ression O& 'e%ra$ation (n Time:$he drift is primaril! age related/ longer term wearout failures of electronic subcomponents areaddressed b! detecting the decreasing abilit! to reset the drift%

)!pport or T*e Task (nterval #n$ Relation To Ot*er Tasks:$he degradation mechanisms addressed effectivel! are the aging processes causing drift and failure ofelectronic subcomponents% 0ecause the controler will compensate for drift to some maimum etentCalibration is less critical for controllers than for other "2C components%

EPRI PM Basis Database - PM Program Report Pa%e 1 o& 1