General Monitors FL4000H, Quick Start Manual

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67
Model FL4000H
Table 39 shows the response characteristics of the FL4000H in the presence of false alarm
sources. The detector is set at a high sensitivity in this illustration.
Table 39: Flame Response in the Presence of False Alarm Sources (High Sensitivity)
False Alarm Source
Min. Distance
ft (m)
Fire Source
Max. Distance
ft (m)
Sunlight, reflected, unmodulated 6 (1.8) 1 x 1 ft
2
heptane 35 (10.7)
Sunlight, reflected, modulated 30 (9.1) 1 x 1 ft
2
heptane 30 (9.1)
Heater, unmodulated 1 (0.3) 1 x 1 ft
2
heptane 35 (10.7)
Heater, modulated 12 (3.7) 1 x 1 ft
2
heptane 35 (10.7)
Incandescent lamp, unmodulated 2.5 (0.8) 1 x 1 ft
2
heptane 35 (10.7)
Incandescent lamp, modulated 2.5 (0.8) 1 x 1 ft
2
heptane 35 (10.7)
Fluorescent lamp, unmodulated 2.5 (0.8) 1 x 1 ft
2
heptane 35 (10.7)
Fluorescent lamp, modulated 2.5 (0.8) 1 x 1 ft
2
heptane 80 (24.4)
Halogen lamp, unmodulated 2 (0.6) 1 x 1 ft
2
heptane 70 (21.3)
Halogen lamp, modulated 4 (1.2) 1 x 1 ft
2
heptane 35 (10.7)
Arc welding (#7014, 3/16 in, 190 A),
unmodulated
12 (3.7) 1 x 1 ft
2
heptane 80 (24.4)
Arc welding (#7014, 3/16 in, 190 A),
modulated
15 (4.6) 1 x 1 ft
2
heptane 80 (24.4)
In general, the operator should try to avoid exposing the detector to false alarm sources. Many
false stimuli such as welding or heaters emit high amounts of IR radiation, which tend to
degrade the performance of the instrument.
8.5 Spare Parts and Accessories
8.5.1 Spare Parts
When ordering Spare Parts and/or Accessories, please contact the nearest General Monitors
Representative or General Monitors directly and give the following information:

Part Number

Description

Quantity