Introduction
FV-40 Series Flame Detector
087-0056 REV F
16
1.5 Performance
Considerations
This section describes performance aspects of the FV-40 Series Detectors
and includes:
Detection Sensitivity
Cone of Vision
False Alarms Prevention
Visual
Indicators
Output
Signals
Detector
Status
Auxiliary Relay as End-of-Line Resistor
1.5.1 Detection
Sensitivity
Detection sensitivity is the maximum distance at which the detector reliably
detects a specific size of fire and typical type of fuel (standard fire).
1.5.1.1 Standard Fire
Defined as a 1ft
2
/ 0.1m
2
n-heptane pan fire, with maximum wind speed of
6.5 ft./sec (2 m/sec).
1.5.1.2 Sensitivity Ranges
The detector has two response levels:
WARNING (Pre-alarm)
ALARM
The detection distance, for the WARNING level, is approximately 10% higher
than the ALARM distance.
For some typical ambient conditions the Zeta parameter as defined in NFPA
72 for the detector is 0.005 (1/meter).
All Models except F4-UF
Table 4: Detector Sensitivity Range Levels
Level
Response Time (sec)
Sensitivity Range- ft. (m)
1 3
50
(15)
2 Default
5
100 (30)
3 8
150
(45)
4 10
215
(65)