FGD FlameSpec IR3-H2-HD - 3.1 Sensitivity; 3.2 Ultra-Fast Detection; 3.3 Alarm Delay; 3.4 Alarm Latch

FlameSpec IR3-H2-HD User Manual
F140V0020.03
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3.1 Sensitivity
The detector can be configured to one of four sensitivity levels: low, medium, high and extreme. The
following table lists for each sensitivity setting the maximum distance, in which a standard H2 fire
1
would be reliably detected.
TABLE 2: SENSITIVITY LEVELS
Sensitivity level
Detection distance in feet (meters)
Low
33 (10)
Medium
66 (20)
High
98 (30)
Extreme
98 (30)
Further details about the response characteristics of the detector at the different sensitivity settings
can be found in Appendix A.
3.2 Ultra-Fast Detection
The ultra-fast detection feature allows detection of fireballs and explosions at 40 milliseconds. This
feature can be disabled or enabled regardless of the alarm delay configuration.
3.3 Alarm Delay
When a flame is detected, the flame detector delays the execution of the alarm outputs by the
configured time period. After this time delay, the detector re-evaluates the situation. If a flame is still
detected the alarm outputs are activated.
3.4 Alarm Latch
If alarm latch is enabled, the detector outputs will remain in alarm mode even after a flame is no
longer detected. To return the detector outputs to normal mode the detector must be powered
down and restarted.
1
A standard fire is defined as a 32-in Plume of H2 fire, with maximum wind speed of 6.5 ft/s (2
m/s).