Calibration Of The Rea Mlv-2D - REA MLV-2D Operating Manual

REA VERIFIER

12 Calibration of the REA MLV-2D

Calibration (test equipment monitoring) is a process by which the values measured by
the device are compared against known reference results from a test code. The values
measured by the device may not deviate from the reference values by more than the
specified tolerances. This procedure tests and verifies the device's measurement
accuracy.
Calibration should be repeated at regular intervals (e.g. monthly). In this way, it is
possible to determine whether the device has become misaligned since the last
calibration. If the device is unable to comply with measurement tolerances during
calibration, measurements made with the device since the last calibration must be re-
evaluated. The degree of deviation observed during calibration is factored into the re-
evaluation.
Calibration should be performed no later than prior to a pending device adjustment.
After the adjustment, calibration must always be performed to make sure that the
adjustment has been properly executed and was successful.
For calibration, the supplied test code (the code designated with Dnom = 0.5) is
measured and the result is documented. REA supplies a verification report with
reference results for this code only. The verification report with the reference results
bears the following stamp:
Figure: Stamp on the reference verification report
The two other test symbols are reserved for later enhancements. To avoid confusion,
the calibration card bears a serial number that is mentioned in the reference
verification report.
Figure: User comment with the calibration card serial number
© REA Elektronik GmbH, 64367 Mühltal, Germany --- REA MLV-2D Manual Version 3 – 21/12/2015 Page 85 of 98