Det-Tronics U7602E Unitized UV Flame Detector/Controller - Manual (Page 18)

16
Atomized Fuel Fires
Distance Response Time, Sec.
Fuel Size Ft. (M) (Standard Mode, Zero Time Delay)
25 cps 50 cps
Methanol Flow Rate 25 .04 .06
10 CC per Sec. (7.5)
Isopropanol Flow Rate 50 .04 .07
10 CC per Sec. (15)
Acetone Flow Rate 50 .04 .08
10 CC per Sec. (15)
Heptane Flow Rate 50 .02 .05
10 CC per Sec. (15)
Standard Mode, High Sensitivity (25 cps), Medium Arc Rejection Mode, Zero Time Delay
On Axis Off Axis
Fuel Size Distance Response Distance Horizontal Vertical
Ft. Sec. Ft. Response, Sec. Response, Sec.
(M) (M) +45° –45° +45° –45°
Methane 30” Plume 75 1.2 37.5 1.0 1.7 0.7 1.0
(22.5) (11.2)
Methanol 1 Sq. Ft. 30 2.3 15 1.2 0.9 1.0 2.5
(0.09 Sq. M) (9) (4.5)
Gasoline 1 Sq. Ft. 65 0.8 32.5 0.8 0.9 0.6 0.8
(0.09 Sq. M) (19.5) (9.7)
Heptane 1 Sq. Ft. 50 1.2 25 1.0 3.3 0.9 0.8
(0.09 Sq. M) (15) (7.5)
HIGH SPEED RESPONSE—
12 millisecond response time to a saturating source (UV input).
ANGLE OF VIEW—
–45 to +45 degrees off centerline in vertical and horizontal planes (methane).
UV ARC REJECTION—
Electrical Arcs.
FALSE ALARM IMMUNITY—
• Direct sunlight.
• Reflected sunlight.
• 75 watt Phillips Far Spot incandescent lamp at 3 feet (1 m).
• 100 watt incandescent light bulb (rough service) at 3 feet (1 m).
• 300 watt incandescent light with clear lens at 3 feet (1 m).
• 250 watt infrared heat lamp at 3 feet (1 m).
• Two 34 watt fluorescent light tubes at 3 feet (1 m).