Kipp & Zonen BREWER MK IV, Инструкция по эксплуатации

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16-10-200716-10-2007
MKIV OPERATOR’S MANUAL 101
Type RS. This test runs for approximately 10 minutes, including a five-minute warmup time for the
standard lamp. No further operator interaction is required. Results will be printed in a format
similar to the following:
Table F.3: Typical Slitmask Test Results
POSITION 0 1 2 3 4 5 6 7
RUN
234503 54 1760383 1681139 1704288 1529450 1313677 3062937
STOP
234100 55 1760880 1682069 1704610 1531027 1313654 3063356
RUN/STOP
1.0017 0.9818 0.9997 0.9994 0.9998 0.9990 1.0000 0.9999
RATIOS (RUN)
-0.036 -0.0319 -0.0586 -0.99 0.2808 0.1657
RATIOS (STOP)
-0.0346 -0.0306 -0.0564 -0.1005 0.2872 0.1682
The test is deemed successful if the ratio RUN/STOP for the five operational wavelengths (slitmask
positions 2..6) are in the range 0.997 to 1.003, and if the ratio for dark count (position 1) lies within
the range 0.20 to 5.0. If the ratios fall outside the acceptance range, there may be problems with
either the slitmask alignment, the slitmask-motor power supply or drive circuitry, or an improper
motor timing constant may have been stored in the instrument Constants File (refer back to the
slitmask-motor timing test, SH).
Normal operational ratios (R1 - R6) are printed out in the last two lines so that ratios in the dynamic
(RUN) and static (STOP) modes can be compared.
SC: Scan Test on Direct Sun
The SC test determines the correct operational setting of the wavelength-adjusting micrometer. The
program takes measurements of O
3
and S0
2
column amounts over an operator-specified range of
micrometer positions (wavelengths) then prints reduced data for each of the positions.
Method:
To correctly determine the optimal operational setting of the micrometer, a series of sun scans at
various air mass values should be taken over a period of several days. Preferably at air mass range
of 1.6 to 3.2 mu
Before running the SC test you should first ensure that the wavelength calibration is current:
perform an HG (mercury-line calibration). Next, run a DS (direct sun) test to check that the
appropriate neutral-density filter (Filterwheel #2) is in place.
Plot the MU*measured ozone/1000 on the Y-axis as a finction of the optimal micrometer step
number on the X-axis. This will give a plot of sun scan points. Remove any obvious outliers from the
data and create a lineair trendline through the sun scan data points. The optimalmicrometer
wavelength calibration step number for a brewer is there where the trendline crosses with the value
0.68 on the Y-axis.
APPENDIX F FACTORY TESTS