traceability

WHY CALIBRATION REQUIRED?

July 18, 2021 / Instrumentation / 3 minutes of reading

You know that calibration is required for a new instrument. We want that the instrument is provide accurate indication or output signal when it is installed. But there is chances of instrument error occurs. Instrument error can occur due to a variety of factors: drift, environment, electrical supply, addition of components to the output loop, …

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CALIBRATION CHARACTERISTICS

July 16, 2021 / Instrumentation / 4 minutes of reading

Calibration Tolerance: All measurements should be made to specified tolerances. The words tolerance and accuracy are often misused. In ISA’s The Automation, Systems, and Instrumentation Dictionary, their definitions are as follows: Accuracy: The magnitude of the error of the total output scale or the error rate to the output, expressed in percentage time or percentage …

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