PerkinElmer 200A Series, User Manual

Page: 135 / 172

Maintenance . 135
Maintenance & Inspection Methods
NOTE: First adjust the xenon lamp position (see chapter 5, Maintenance), then make an energy check of
the xenon lamp and a wavelength accuracy check using the Hg lamp. Correct measurement results
will not be obtained unless the lamp position is adjusted.
Energy Check of Xe Lamp
Check the energy level of the Xe lamp at a wavelength of 254 nm (see chapter 4, Operation).
NOTE:
When the energy level of the Xe lamp has decreased by 50% or more in comparison with the level
at initial use, the useful life of the lamp is considered to have ended. The lamp life can be judged
by the energy level, or by baseline fluctuation (fluctuation of data and/or noise).
Wavelength Accuracy Check Using Hg Lamp
Check the wavelength accuracy by means of the bright line of the Hg lamp at 254 nm (see chapter
4, Operation).
“GOOD” will be indicated on the display when wavelength error is within (3 nm; “FAIL” will be
indicated if the error exceeds (3 nm.
NOTE: If “FAIL” is indicated, wavelength calibration is required. Refer to chapter 5, Maintenance for the
calibration.
Check of Lamp Logbook
The cumulative turn-on time, number of lightings, and last replacement date for the Xe and Hg
lamps can be checked via the GLP function (see chapter 4, Operation).