What is calibration and traceability?

Calibrating a device to determine the accuracy relies on the reference instrument it is calibrated with and the traceability of the reference’s calibration. Almost without exception, precision measurement traceability is compared to the International System of Units (SI).

What is a calibration chain?

Calibrated means that each link is manufactured to the same dimensions within a given tolerance. Windlass gypsys are generally designed and manufactured so that they are compatible with a given size and calibration of chain.

What is the traceability chain?

Simply put, the number of “links” between the primary calibration (NIST) and the customer. The more “links’, or calibration transfers, the larger the measurement uncertainty. Calibrate with ICL and minimize the links in the traceability chain between NIST and your thermometer. …

How do you understand by calibration and metrological traceability?

The formal definition of metrological traceability: Property of a measurement result whereby the result can be related to a reference through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty.

Why is calibration traceability important?

Why is Measurement Traceability Important? Simply put, calibration to a traceable standard validates a sensors’ accuracy and any associated uncertainties. Measurement Traceability is important for providing assurance of the sensor’s accuracy to both a customer and manufacturer for a given process.

What is calibration period?

A calibration interval is the period of time established for a test instrument to be returned for recalibration. We recalibrate instruments so we can be confident they are performing as good as, or better than, described in the manufacturer’s specifications.

Which standard used in calibration chain has higher accuracy?

Within these temperature ranges, a mercury-in-glass thermometer is commonly used as the standard reference calibration instrument, although a platinum RTD is used when better accuracy is required.

What is calibration uncertainty?

In principle, the uncertainty quantifies any possible difference between the calibrated value and its reference base (which normally depends on reference standards). …

What is metrological traceability?

The term “metrological traceability” is defined as: ”The property of the result of a measurement or the value of a measurement standard that relates it to a stated reference, usually a national or international standard, through an unbroken chain of comparisons with stated uncertainties.”

What is meant by legal metrology?

Legal metrology” means that part of metrology which treats units of weighment and measurement, methods of weighment and measurement and weighing and measuring instruments, in relation to the mandatory technical and legal requirements which have the objects of ensuring public guarantee from the point of view of security …