Spectrex 20/20F - Fast UV/IR Flame Detector - Manual (Page 12)

Spectrex Inc. - SharpEye TM UV/IR (F) Flame Detector Manual – TM756100 Rev A, July 2005
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3. Performance
3.1 Detection Sensitivity
Detection sensitivity is the maximum distance at which the detector will reliably
detect a specific size of fire & typical type of fuel (standard fire).
Standard Fire:
Standard fire is defined as a 1ft x 1ft (0.3m x 0.3m) Gasoline pan fire with max.
wind speed of 6.5ft/sec (2m/sec).
Detection Range:
20 ft (6 m) from 1ft x 1ft (0.3m x 0.3m) standard gasoline pan fire.
Sensitivity Ranges:
For some typical ambient conditions the Zeta parameter as defined in NFPA 72
for the detector is 0.01 (1/meter).
Note:
Zeta parameters may vary significantly with changes in temp, air pressure,
humidity, visibility conditions, etc.
Response Time:
Max. 5 msec. for Φ 5" (Φ12 cm) gasoline pan fire at a distance of 1 ft (30cm).
Typical 3 sec. for 1ft x 1ft (0.3m x 0.3m) gasoline standard fire at 20 ft (6 m).