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9
95-8562
4.2
FM Approval Description and Performance Report – Continued
FALSE ALARM IMMUNITY COMBINED WITH FIRE SOURCE
False Alarm Source
False Alarm
Source Distance
(feet)
Fire Source
Fire Source
Distance
(inches)
Arc welding, unmodulated
3.5
10 in propane
12
Arc welding, modulated
3.5
10 in propane
12
70 W sodium vapor lamp, unmodulated
0.5
10 in propane
24
70 W sodium vapor lamp, modulated
0.5
10 in propane
19
250 W mercury vapor lamp, unmodulated
1.0
10 in propane
20
250 W mercury vapor lamp, modulated
1.0
10 in propane
20
300 W incandescent lamp, unmodulated
0.67
10 in propane
27
300 W incandescent lamp, modulated
0.67
10 in propane
21
500 W shielded quartz halogen lamp, unmodulated
2.5
10 in propane
25
500 W shielded quartz halogen lamp, modulated
2.5
10 in propane
18
1500 W electric quartz heater, unmodulated
9
10 in propane
24
1500 W electric quartz heater, modulated
9
10 in propane
27
Two 34 W fluorescent lamps, unmodulated
0.25
10 in propane
20
Two 34 W fluorescent lamps, modulated
0.25
10 in propane
24
FIELD OF VIEW
(Typical Response Time <0.5 Sec.)
Fuel
Size
Distance
(feet)
Vert./Horiz.
(degrees)
n-Heptane
1 x 1 foot
9
+55
–55
Isopropanol
8 in. dia.
4
+55
–55
Polypropylene
8 in. dia.
4
+55
–55
NOTE: Response time measurements based upon
shuttered test method.