Comparision between LED based UV light & Conventional UV lights for NDT Inspections

Certainly there is an increasing demand for LED Based Ultraviolet Lights (UV) when compared to conventional UV Lights used in Nondestructive tests. It is worth to understand the advantage one over the other before ordering from the NDT Equipment Suppliers.
Comparison between LED based UV light & Conventional UV lights for NDT Inspections in Liquid Penetrant & Magnetic Particle Inspections.

Parameters	LED Based UV Light	Conventional UV Light	Advantages
Average rated life	15000-20000 Hrs	2000-2500 Hrs	At least 10 times better life
Power consumption	7.5 Watt/Hr	125Watt/Hr.	Energy saving
Operating voltage	12-18V AC/DC	230V AC	Energy saving
UV output at 15" from lens	5300 µW/cm²	5200 µW/cm²	Better intensity
Intensity reduction	Drops on 8-10% over the entire life of LED	Reduces substantially as per uses & at every Switch ON-OFF	Much better life
Time Needed to reach full intensity	Within a second	Wait for 15-20 minutes	Minimises production loss
Weight	0.7 Kg	2.5 Kg	Easy to handle
Heat Generation	Negligible	High heat generated	Operator Friendly (Specially in Hot summer days)
Risk Due to UV Radiation	No risk since it emits only UV-A radiation	Also emits UV-B radiation (That is why filter needed)	Safe for Human Being
Environment Friendly	Does not contain Mercury	Contains Mercury	Safe for environvement
Focussed Rays	More sensitive to minute cracks & no irriatation on eyes	Does not have this advantage	Increased sensitivity & operator friendly
Comfort Level for operator	Increased comfort due to negligible heat ,more focused rays & lesser weight	Does not have this advantage	More operator friendly
Flickering (Due to high Voltage variation in Forging units/Press Shop)	No Flickring	Light goes off momentary	Better life & inspection does not hamper
When bought near Coil Field	Does not get switched off	Light goes off momentary	Increased productivity
Long Life & Cost Saving	Long life of LED,No Filters & Bulb used	Frequent replacement of UV Bulb & Filters	Cost Saving
Increased Life of UV Light	Life can be increased further & power can be saved only when it is required to switch on the light	It is recommended to Swich ON continuosly for the entire shift, if the inspection to done since each time switching ON -OFF the light reduces its life by 2-3 Hrs.	Increased life & energy saving
Battery Operated	Can also run on battery with very small investment	High investment needed for battery operated	Cost Saving
Effect of Water & Oil	Having no effect if the water falls on light	Very likely changes of breakage of Filters & bulb (Since these are hot while in operation)	Cost Saving
Spares availability	Easily available	Not easily available since these need to be imported	Cost Saving