Discovery Response Modes
A major objective in designing a detection system is to achieve
the best detection performance while keeping the number of unwanted
alarms to a minimum. Unwanted alarms are normally caused by
environmental influences and, generally speaking, the higher the
sensitivity, the more frequent the unwanted alarms.
Each detector in the Discovery range can operate in one of five
response modes, any of which can be selected from the control
panel. Each mode corresponds to a unique response behaviour, which
can be broadly related to sensitivity to fire. Whatever the type of
detector, mode 1 will give higher sensitivity to fire than mode
5.
Therefore, Discovery detectors set to mode 1 will be most
suitable for environments in which sources of unwanted alarms are
rare, for example cleanrooms and computer suites. At the other
extreme, response mode 5 will be suited to more dusty or smoky
enviroments such as loading areas where diesel forklift trucks are
operating. Response mode 3 is a general-purpose setting for which
the response is similar to that of the corresponding XP95 detector.
The table below illustrates typical applications and their
modes.
