Dual Spectrum® Infrared PM-34CBEH sensors detect fuel explosions and fires in enclosed spaces of armored personnel carriers. They are operational in any lighting condition and are effective through oil, smoke, dirt and other obscurants. The sensors contain a third infrared detector that provides infrared signature information to the logic located in the control electronics.
Dual Spectrum® Infrared PM-34CBEH sensors detect fuel explosions and fires in enclosed spaces of armored personnel carriers. They are operational in any lighting condition and are effective through oil, smoke, dirt and other obscurants. The sensors contain a third infrared detector that provides infrared signature information to the logic located in the control electronics. This provides discrimination capability which prevents false alarms from a Kinetic Energy (KE) or High Explosive Anti-Tank (HEAT) round penetration that does not result in an explosion or fire. The suppression system is triggered only when an explosion or fire occurs.
The sensors incorporate built-in test circuitry that monitors detectors, electronics, and window contamination. The sensors integrate radiometric heat detection circuitry that monitors the entire field of view for overheat conditions. Radiometric heat sensing remains operational even when thick layers of contamination are present.
PERFORMANCE SPECIFICATIONS | |
Detection Threshold | 18” diameter hydrocarbon fire at a distance of 60” |
Explosive Fire Response Time | 2 milliseconds, maximum |
Heat Detection Threshold | Factory set, usually 300° F above background |
Optical Field of View | 90° cone, minimum |
Weight | 0.6 pounds |
Temperature, Operational | -67° F (-55° C) to +257° F (125° C) |
Environmental | Qualified to vibration, shock, and humidity requirements of MIL-STD-810 for combat vehicle conditions |
FALSE ALARM IMMUNITY | |
STIMULUS | DISTANCE (in.) |
Sunlight | No Response |
Bright colored clothing | No Response |
Flashlight | No Response |
Fluorescent light (40 watt) | No Response |
Indirect or reflected light | No Response |
Chopped light (vent fans, hatch covers, etc) | No Response |
Electronic flash | 12 inches |
Electric arc (1/2 in. 4000V) | 1 inch |
Lit cigarette | 1 inch |
Incandescent lamp (75 watts – rough surface) | 2 inches |
Bookmatch flare-up | 4 inches |
Large wooden match flare-up | 4 inches |
Red dome light | 1 inch |
Rifle flash (M16) | 2 inches |
Vehicle headlights | 6 inches |
Vehicle IR lights | 12 inches |
Radiation heater (1000 watts) | 12 inches |
Movie lights (625 watts) | 24 inches |
Oxy-Acetylene flame (5/8 x 6” flame) | 12 inches |
Arc welding (steel rod, 0.5” arc) | 30 inches |
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