Teledyne 6200T - Sulfides Analyzer - Manual (Page 269)

6200T Total Sulfur Analyzer Troubleshooting
Teledyen Analytical Instruments 269
Lamp Aging - Over a period of months, the UV energy will show a downward trend
and can be up to 50% in the first 90 days, and then a slower rate, until the end of useful
life of the lamp. Periodically running the UV lamp calibration routine (refer to Section
5.9.6) will compensate for this until the lamp output becomes too low to function at all.
Note As the lamp degrades over time, the software for the CPU compensates
for the loss of UV output.
Lamp Positioning – The UV output level of the lamp is not even across the entire
length of the lamp. Some portions of the lamp shine slightly more brightly than others.
At the factory the position of the UV lamp is adjusted to optimize the amount of UV
light shining through the UV filter/lens and into the reaction cell. Changes to the
physical alignment of the lamp can affect the analyzers ability to accurately measure
SO
2
.
Figure 12-13: Shutter Assembly
CAUTION - GENERAL SAFETY HAZARD
Do not look at the UV lamp while the unit is operating. UV light can cause
eye damage. Always use safety glasses made from UV blocking material
when working with the UV Lamp Assembly. (Generic plastic glasses are