3.2 OPC UA for Process Air Extraction and Filtration Systems terms

3.2.1 Filter system

System which serves the purpose of extracting and filtering process gas; e.g., air. It consists of several filter units and other devices and components.

3.2.2 Filter unit

Subcomponent of a filter system, consisting of other devices and components.

3.2.3 Separator

Part of the filter unit that filters solid, liquid or gaseous components from the process gas.
Examples are:

Wet separator

Cartridge filter

Automatic roll band filter

Electrostatic precipitator

3.2.4 Process air

Atmospheric air that comes into contact with a manufacturing process and must be present in a defined degree of purity for the manufacturing process to function or is contaminated with released substances (e.g. solid, liquid or gaseous components) or energy loads as a result of the manufacturing process

3.2.5 Air connection

Air interface that connects the filter system and the filter units to the process air duct system. Parts of this interface can be, for example, gate valves or check valves.

3.2.6 Discharge system

Device used to remove collected filter material from the filter unit. Examples are: rotary valves or discharge gate valves.

3.2.7 Cleaning unit

Device for the reduction of filtered materials in separators. The cleaning can be achieved e.g. by vibration, reversed airflow or compressed-air blast (EN 12779:2015).

3.2.8 Device for filter aid

Device for the application of a filter aid. Examples of filter aids are: finely divided, porous solid material, material for neutralization of gases or liquids.

3.2.9 Fan

Component within the filter system which produces the volume flow rate necessary for extracting process gas. Examples are: ventilators, blowers

3.2.10 Temperature regulator

Component in the filter system for heating or cooling the process gas.

3.2.11 Safety system

Component that represents a protective device. Examples are: extinguishing systems, smoke detectors, spark detectors.