5.5 Alarm system
5.5.1
The gas analytical system may be equipped with an alarm system that shall give an audible or visible signal when the maximum permissible unit emission specified for the given stationary source is exceeded. If an alarm system is fitted, it shall be tested.
5.5.2
The gas handling system shall have a device that measures or signals that the gas flow is not available or that its rate is outside the limits specified by the manufacturer.
5.5.3
An indication that the gas analytical system is ready for measurement shall be provided. If it is not ready, any indication on a recording device and any printing of the results on a printing device shall be prevented.
5.5.4
For a gas analytical system with electrochemical sensors, a warning device shall be provided to signal that the effective life of the sensors has expired. Sensors for indicating the expiry of the filters shall be fitted.