|Accredited authority or laboratory calibration
|A calibration performed by an accredited authority or laboratory, normally for compliance with national or international quality standards, procedures or guidelines.
|An event in the life of a sensor or instrument in which the coefficients used to convert its outputs into engineering units, or improve its accuracy, are determined and applied.
|Instrument or platform is withdrawn from service.
|Instrument or platform is delivered to the owner.
|Placement of an instrument or platform to where it will make measurements.
|Unexpected malfunction of instrument or platform.
|A calibration performed against discrete in-situ measurements, such as from water-bottle samples.
|Instrument or platform is returned by a third party.
|Instrument or platform is supplied to a third-party for a limited period of time.
|Instrument or platform is lost.
|Instrument or platform is under maintainance.
|A calibration performed by the manufacturer of the device or system.
|Return of an instrument or platform from where it has made measurements.
|Instrument or platform is under repair.
|Instrument or platform is returned to service following correction of a malfunction.
|Instrument or platform is taken out of service for correction of a malfunction.
|Instrument or platform is raised to a higher standard by specific improvements such as adding or replacing components.