For more information & Technical support: (+1) 714-671-8500 · support@fg-detection.com 2
1.2 Model Number Description
Model No are defined as follows:
FLS-IR3-H2-HD - X S X 1
1 - M25
2 - ¾” NPT
A – FM, ATEX
1.3 Internal tests
During normal operation, the flame detector performs self-tests of its optics, electronics and software. These
include a periodic BIT (Built-In-Test) in which the sensors and window cleanliness are tested. Any detected
fault is indicated as shown in Table 4 (in section 5.1). During “Dirty Window” fault the detection sensitivity is
significantly reduced, while “Fault” refers to critical faults which totally prevent flame detection.
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