Spectrex 40/40U-UB - UV Flame Detector - Manual (Page 20)

SharpEye TM UV Flame Detector User Guide
8 Performance Considerations
Note: Zeta parameters may vary significantly with changes in temperature,
air pressure, humidity, visibility conditions, and so on.
1.5.1.3 Other Fuels
The detector reacts to other types of fire as follows:
 The baseline fire refers to n-heptane 1ft 2 (0.1m 2 ) and is defined as
100% sensitivity.
 For fuel fire – standard pan fire size: 1 ft 2 (0.1 m 2 ).
 For gas flame - 20 inch (0.5m) high, 8 inch (0.2m) width plume fire.
 Maximum Response Time: 10 sec.
Table 3: Fuel Sensitivity Ranges
Type Of Fuel
Max. Distance (ft./m)
40/40U and UB
Gasoline 50/15
N-Heptane 50/15
JP5 37/11
Kerosene 37/11
Diesel Fuel 37/11
Ethanol 95% 37/11
IPA 37/11
Methanol 37/11
Methane 40/12
LPG 40/12
Paper 20/6
Polypropylene 18/5
Hydrogen 33/10
Silane 22/7