5.4 Calibration
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5.4 Calibration

  5.4.1 Each normally used operating range shall be calibrated.

  5.4.2 Using purified synthetic air (or nitrogen), the CO, CO2, NOx and O2 analysers shall be set at zero.

  5.4.3 The appropriate calibration gases shall be introduced to the analysers, the value recorded, and the calibration curve established according to 5.5 below.

  5.4.4 The zero setting shall be rechecked and the calibration procedure repeated, if necessary.

Parent topic: 5 Calibration procedure
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