Flame detectors are sensors designed to detect and respond to the presence of a flame or fire, allowing flame detection. Responses depend on the installation, but include sounding an alarm, deactivating a fuel line (such as a propane or a natural gas line), or activating fire suppression systems.
Different applications call for different actions. In industrial furnaces, for instance, their role is to provide confirmation that the furnace is operating properly. A flame detector can often respond faster and more accurately than a smoke or heat detector due to the mechanisms it uses to detect the flame.
Types of flame detectors
The main types of flame detector are:
- Near IR array
- Infrared thermal cameras
- IR/IR flame detection
- IR3 flame detection
- Visible sensors
- Ionisation current flame detection
- Thermocouple flame detection