Question 232Safety & Environmental - 1st Asst/Chief

The correct answer is A) Fixed temperature. The component shown in the illustration SF-0004 is a fixed temperature fire detector. This type of detector is used in fixed temperature fire detection systems, which are designed to activate when the surrounding temperature reaches a pre-determined fixed temperature threshold. This is in contrast to rate-of-rise detectors (option D), which activate based on the speed of temperature increase, or combined fixed temperature and rate-of-rise detectors (option C). Line-type pneumatic detectors (option B) use pressurized tubing to detect changes in pressure, rather than temperature.