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APPENDIX A - FACTORY MUTUAL RESEARCH (FMR)
APPROVAL DESCRIPTION
APPROVAL
Models U7652B (relay output) and U7652C (relay or 4-20 ma output) with aluminum or stainless steel enclosure
and 1/2-inch NPT conduit entries (M25 conduit entry may be used in non-North American applications). For 18-
32 vdc operation through an approved control panel that provides separate circuits for power and alarm initia-
tion.
• Automatic Fire Alarm Signaling Performance verified per FM3260.
• Explosionproof for Class I, Division 1, Groups B, C and D Hazardous (Classified) Locations per FM 3615.
• Dust-ignitionproof for Class II/III, Div. 1, Groups E, F, and G Hazardous (Classified) Locations per FM 3615.
• Non-incendive for Class I, Division 2, Groups A, B, C and D (T4A); Class II/III, Division 2, Groups F and G
(T4A) Hazardous (Classified) Locations per FM 3611.
• Ambient Temperature Limits –40°C to +75°C.
• Enclosure Rating NEMA/Type 4X per NEMA 250.
• Performance verified Optical Integrity (
oi
).
• The following performance criteria was verified by FMR using IR Module DE 5400-001 and UV Module
DE1888:
Response Characteristics
Angle of View
–45 to +45 off centerline in vertical and horizontal planes.
False Alarm Immunity
• Direct Sunlight
• A 150 watt incandescent lights at 2 ft. (0.6 m).
• Two 60 watt fluorescent at 2 ft. (0.6 m).
• A 500 watt halogen lamp at 4 ft. (1.2 m).
• The radiation produced by a Miller Dial-Arc 250-P arcwelder at 10 ft. (3.0 m), set at 50 amps with 1/8 inch
Type 601 welding rod.
• Vibration immunity for vertical displacement of 0.02 inches (0.5 mm) at a frequency of 10 to 30 Hz for 4 hours.
• Radio frequency interference (RFI) immunity at 12 inches to 155 MHz and 450 MHz with radiation power levels
of 5.0 Watts.
Options
Model Q9001G Swivel Mounting Bracket.
Time Delay
Fuel
Size
Distance
Average Response Time
0.5 sec.
Gasoline
1 ft x 1 ft (0.3 m x 0.3 m)
50 ft (15 m)
within 2 sec.
3 sec.
Gasoline
1 ft x 1 ft (0.3 m x 0.3 m)
50 ft (15 m)
within 10 sec.
0.5 sec.
JP-4
2 ft x 2 ft (0.6 m x 0.6 m)
100 ft (30.5 m)
within 2 sec.
0.5 sec.
JP-4
4 ft x 4 ft (1.2 m x 1.2 m)
150 ft (45.7 m)
within 2 sec.
0.5 sec.
JP-4
10 ft x 10 ft (3.0 m x 3.0 m)
150 ft (45.7 m)
within 2 sec.
