A calibration certificate provides verification for a customer that their data logger has been checked and has been found to be reading within the specification quoted on the unit's data sheet. Data loggers are compared to a reference meter that has been calibrated in a UKAS approved laboratory, and calibration certificates give traceability back to national standards.
Frequently asked questions about calibrating Tinytag data loggers.
A calibration certificate lists the value recorded by the reference meter (the temperature or humidity at which the data logger was tested), the value recorded by the data logger and the error between the two readings (the certificate will also show readings before and after any adjustment made to the unit where appropriate).
In addition to the reading information, calibration certificates also list the test method and the details of the equipment used to provide traceability back to national standards.
Typically we would suggest that loggers are checked annually. Critical or high accuracy applications may call for more regular checks however.
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