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6 CALIBRATION ADJUSTMENT
Before taking readings and at regular intervals, check the calibration of your gauge (see section 6.2) using
the calibration tile supplied with the gauge.
If the values differ by more than
±
0.5 (GU) it will be necessary to adjust the calibration (see section 6.4).
6.1 The calibration tile
The calibration tile consists of a black glass tile mounted in matt foam in a protective case (Figure 5). The
tile is certified with traceability to the BAM standards.
The calibration tile is supplied certified in a clean and defect-free condition. A visual inspection for smears
or damage is recommended before each subsequent calibration as dirty or defective tiles may lead to
inaccurate measurements.
Op_402 TMA-0244 Issue 02.fm Page 17 Friday, February 9, 2007 12:01 PM
