Other carbon dioxide monitors may be used to follow this guidance but care must be taken to ensure any differences in units are taken into account.
Gellir defnyddio dyfeisiau monitro carbon deuocsid eraill i ddilyn y canllawiau hyn ond rhaid cymryd gofal er mwyn sicrhau y caiff unrhyw wahaniaethau mewn unedau eu hystyried.