Annex A
(Informative)
Procedure for subsequent verification
Subsequent verification of a gas analytical system at the same location may include the tests below.
A.1
For short-term subsequent verification, perform all tests included in the initial verification except for the power check and the warm-up check.
A.2
For short-term subsequent verification, determine the error using the number of CGMs required for initial verification, unless the responsible legal authority specifies fewer CGMs.
A.3
For long-term subsequent verification, perform all tests included in the initial verification.
A.4
When a gas analytical system has been moved to a new location, or has undergone repairs other than the replacement of its separate units (e.g. a sampling device or a filter) as defined in the manufacturer’s operating manual, perform all tests included in the initial verification.