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Oil film detector LO-200 scans water surface with the laser and detects the film of oil.Because the oil is more reflective than the water, the intensity of light reflected from the oil will be greater than that　from water surface.The LO-200 detects floating oil by sensing the difference in the intensity of reflection. As compared with spotlight-based systems, The LO-200 adopted laser scanning method enables to operate more reliable against water surface level fluctuation, and widen distance between the water surface and the detector.

SPECIFICATIONS

Model number	LO-200
Subject of detection	Oil on water surface or liquid on floor
Detection method	surface scanning laser / reflected light sensor
Laser emitter	Semiconductor laser,wavelength (λ） 650 nm, output within 1 mW (class2)
Mdulation laser frequency	Approx. 50 kHz
Scanning mechanizm	Oscillating mirror
Detection range (refrractive index of scanned media)	Model 1	1.00 (no reflection) to 1.58
Detection range (refrractive index of scanned media)	Model 2	1.33 (water) to 1.58
Leak detection	Detection cycle	1 sec. (fixed)
	Continuous detection time (N)	1 - 99 sec. (adjustable at 1 sec. intervals)
	Leak detection alert	Engages when current from light sensor exceeds threshold setting for N consecutive seconds.
Error	Malfunction	Engage when laser emission, laser scanning, or motor rotation fails
Error	Abnormal light sensing	Engage when floating debris produces no reflection or abnormally strong reflection.
Output	Relay signal outputs (leak detected and error)	Dry contact relay, form A and B; max. load is 4 A at 250 V AC or 30 V DC.
Output	Current output	Intensity of light picked up by the sensor is converted to a 0 - 20 mA current signal.
Adjustments and displays	Light sensing level	Displayed with 17-LED bar indicating 0 - 20 mA
	Leak detection current threshold	Displayed with 17-LED bar indicating 0 - 20 mA; adjusted by potentiometer dial
	Continuous detection time	Adjusted with two rotary switches, one for 10 sec. increments and one for 1 sec. increments
	Operating lamps	Green LED (RUN) indicates operation Yellow LED (ERR) indicates error, red LED (ALM) indicates leak detected.
Power supply	AC 100 V ± 10 % 50 or 60 Hz signal-phase, 100 VA max. 27 w (typ.)
Operating temperature	-10 to +50 ℃ (if water surface not frozen)
Weatherability	Water-tight construction for outdoor use
Materials / surface treatments	Cylindrical shroud	Alumite-treat aluminum, polyurethane finish
	Display box	Alumite-treat aluminum, polyurethane finish
	Finish color	Japan Paint Manufacturers Association U35-85B
External dimentions	185 mm Φ × 535 mm H
Weight	Approx. 14 kg
Attached cables	12 m, 1.25 mm sq., 3-wire power cable 12 m, 0.5 mm sq., 6-wire shield sheath signal cable
Installation condeitions	Maximum 3 ° off true vertical Use shade where necessary to avoid direct sunlight Prevent freezing of scanned water surface Use rain hood where necessary Max. 3 m between detector and scanned surface