Riken Keiki GW-3, Руководство по эксплуатации

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2. Important Safety Information 2-2. Warning information
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WARNING
Handling the calibration gas

The carbon monoxide sensor with hydrogen compensation must be calibrated separately for carbon
monoxide and hydrogen.

If hydrogen sensitivity calibration is not performed, carbon monoxide readings may be inaccurate due to
hydrogen interference.

Due to the hydrogen compensation mechanism, carbon monoxide readings may increase temporarily if
hydrogen gas concentrations increase rapidly in the atmosphere being measured.
C-