UV lamp with retaining ring /green tips/
UV lamp with retaining ring /white tips/
UV lamp without retaining ring UVHOAL300AV/14
Made in the U.S.A.
The effective UV output of the
lamps decreases over time. With the older lamps the UV output decreases
steadily while the lamp is in operation and very rapidly toward the end of lamp
life. These lamps are still utilized for applications where the UV intensity is
not of crucial importance - surface sterilization, for example, where the
irradiation time is almost unlimited. However for the fast moving cold air in
the HVAC systems only High Output germicidal UV lamps should be used. U.S.
Patent 4,700,101 for the 4-pin base.
The American-Lights® high output germicidal UV lamps provide stable UV output
for up to 50% longer than traditional germicidal lamps. With a typical
germicidal UV lamp, the output at 254nm will drop to
60% of the initial UV output at about 9,000 hours. This means that on average,
every 45 days, the standard UV lamp is becoming 5% less effective. The
American-Lights® High Output lamps maintain their intensity better and longer
than conventional germicidal lamps. At 9,000 hours (approximately 1 year), the
American-Lights® UV lamp is still operating at 90% of its initial intensity. At
12,000 hours of operation, the lamp is emitting 85% and the UV output starts
deteriorating rapidly. The lamp should be
replaced after one year even though it continues to operate at a lower UV
efficiency after one year.
Utilizing a proprietary technology,
the American-Lights® high output UV lamps maintain a higher UV output, with
much slower UV output depreciation than traditional germicidal lamps. Operating
continuously (turning lamp on and off shortens its life) at the proper power,
the American-Lights® UV lamps offer stable and consistent UV disinfection over time
with a uniform system performance throughout the life of the lamp.