Kipp & Zonen BREWER MK IV User manual

INSTRUCTION MANUAL
OM
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BA
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C230/B
Mk IV

REVISION HISTORY
REV DESCRIPTION DCN # DATE APPD
B Update 99-16-12
C Update 07-16-10

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MANUFACTURER'S GUARANTEE / WARRANTY
If a warranty statement is not included in a purchasing contract, then the following warranty
statement shall apply.
NEW PRODUCT WARRANTY AND LIMITATION OF LIABILITY
KIPP & ZONEN B.V. hereby warrants to its products to be free from defects in material and
workmanship for a period of two years from date of purchase.
KIPP & ZONEN 's obligation under this warranty is strictly and exclusively limited to repairing or
replacing, at KIPP & ZONEN 's discretion, any such equipment and / or parts thereof which have
failed under normal use and service. Expressly this warranty does not apply to any equipment and /
or parts which have been improperly installed, been subject to abuse, neglect and / or accident.
The foregoing warranty is in lieu of any other warranties, expressed or implied, and includes,
without limitations, any implied warranty of merchantability or fitness for a particular purpose, and of
any other obligations of liabilities whatsoever in any event for payment of any incidental or
consequential damages, including, without limitation damages or injury to a person or property.
An authorization must be obtained from KIPP & ZONEN prior to the return of any equipment or
parts thereof. Returned material is to be turned to the factory, or other location as may be directed
by KIPP & ZONEN, freight prepaid and will be returned freight prepaid. KIPP & ZONEN is not
responsible for any transportation, insurance, demurrage, brokerage, duties, or councillor charges,
etc.
This warranty is given to the original purchaser and may not be transferred without direct written
consent of KIPP & ZONEN.
Should an extended warranty be purchased, then the aforementioned in its entirety is applicable for
the entire period of time covered by said extended warranty.

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Recommendations by Environment Canada
Mark III Brewer Ozone Spectrophotometers are recommended by Environment Canada (EC) as the
significantly superior model of Brewer instrument with which to measure ozone in the ultraviolet
(UV) region of the spectrum. EC strongly discourages the use of other models of the Brewer
instrument for the measurement of ultraviolet radiation or ozone in the UV because of the much
poorer stray light performance of the single monochromator versions of the instrument.

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1SYSTEM OVERVIEW...................................................................................................................... 7
2SYSTEM DESCRIPTION................................................................................................................. 9
2.1 SPECTROPHOTOMETER ....................................................................................................10
2.1.1 Mechanical Construction .............................................................................................11
2.2 SOLAR TRACKING ................................................................................................................ 20
2.2.1 Zenith Positioning System ...........................................................................................20
2.2.2 Azimuth Positioning System......................................................................................... 20
2.3 COMPUTER EQUIPMENT ..................................................................................................... 21
3BREWER SYSTEM SETUP .......................................................................................................... 23
3.1 SPECTROPHOTOMETER UNPACKING AND SETUP.......................................................... 25
3.2 TRIPOD UNPACKING AND SETUP ....................................................................................... 25
3.3 AZIMUTH TRACKER UNPACKING AND SETUP .................................................................. 25
3.4 MOUNTING THE BREWER ................................................................................................... 26
3.5 BREWER OPERATING SOFTWARE..................................................................................... 27
3.6 COMPUTER SETUP............................................................................................................... 27
3.7 BREWER / COMPUTER INTEGRATION ............................................................................... 28
3.8 MAIN MENU COMPUTER DISPLAY ...................................................................................... 30
3.9 INITIAL TESTS........................................................................................................................ 30
3.10 FINAL INSTALLATION.......................................................................................................31
4BREWER COMMANDS................................................................................................................. 33
4.1 RESERVED KEYS: Home, Del, Ctrl+Break...........................................................................33
4.2 BREWER COMMAND SUMMARY........................................................................................33
5ROUTINE OPERATIONS and MINOR MAINTENANCE ............................................................... 47
5.1 DAILY TASKS ........................................................................................................................47
5.2 WEEKLY TASKS ...................................................................................................................50
5.3 INFREQUENT TASKS ...........................................................................................................50
5.4 MINOR MAINTENANCE ........................................................................................................50
6UV STABILITY CHECK - QS ........................................................................................................ 55
7SOLAR AND LUNAR SITING - SI, SIM ......................................................................................... 59
8BREWER SCHEDULES - SE, SKC, SK........................................................................................ 61
APPENDIX A BREWER DATA FILES............................................................................................ 63
APPENDIX B CONFIGURATION FILES........................................................................................ 79
APPENDIX C UV PROCESSING................................................................................................... 85
LAMP DATA ANALYSIS ................................................................................................................. 85
LAMP DATA ANALYSIS ................................................................................................................. 85
Brewer Response Files .........................................................................................................85
Lamp Irradiance Files............................................................................................................86
UV DATA ANALYSIS PROGRAMS ................................................................................................ 87
Using AB_UVDAT.EXE.........................................................................................................87
Using RD_UX.EXE................................................................................................................87
APPENDIX D NOBREWER ........................................................................................................... 89
TABLE OF CONTENTS

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APPENDIX E UMKEHR PROCESSING ........................................................................................ 91
APPENDIX F FACTORY TESTS ................................................................................................... 93
Setup and Calibration Tests..........................................................................................................93
AZ: Zero the Azimuth Tracker ..............................................................................................94
DT: Photomultiplier Deadtime Test .......................................................................................94
HG: Mercury-Line Wavelength Calibration...........................................................................96
Humidity Sensor Test............................................................................................................97
Inter-Comparison Calibration ..............................................................................................100
RS: Slitmask Motor Run/Stop Test ....................................................................................100
SC: Scan Test on Direct Sun .............................................................................................101
SH Shutter-Motor (Slitmask Motor) Timing Test .................................................................102
SL: Standard Lamp Test .....................................................................................................103
SR: Azimuth Tracker Steps-per-Revolution Calibration.....................................................104
Stray Light Measurement ....................................................................................................104
Thermal Tests .....................................................................................................................105
APPENDIX G PRELIMINARY DATA REDUCTION ....................................................................... 107
Converting Raw Counts to Light Intensity...................................................................................107
Converting Raw Data to Count Rates.........................................................................................107
Compensating for Deadtime .......................................................................................................108
Compensating for Temperature..................................................................................................108
Compensating for Rayleigh Scattering (DS only)........................................................................108
Computing Single and Double Ratios .........................................................................................109
Determining O3and SO2from Direct-Sun Data..........................................................................109
Determining O3and SO2from Zenith-Sky Data........................................................................... 110
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) .............................................111
APPENDIX I FIRMWARE LOG ...................................................................................................... 125
Format:........................................................................................................................................125
Log Items ....................................................................................................................................125
APPENDIX J BREWCMD.EXE .................................................................................................... 131

16-10-200716-10-2007
MKIV OPERATOR’S MANUAL 7
1 SYSTEM OVERVIEW
The Brewer Spectrophotometer is a scientific instrument which measures Ultra Violet, or Visible,
radiation in the solar spectrum. By examining the differential absorption of select wavelengths in the
UVB portion of the spectrum, determinations of Total Column Ozone and Total Column Sulpher
Dioxide are inferred. In addition, especially with the MKIII double monochromator instrument,
accurate spectral intensity profiles of UV radiation in the 286.5 nm to 363 nm range are measured.
The the MKIV instrument measures intensity of radiation in the visible part of the spectrum (430-
450nm) and uses differential absorption in this region to infer Total Column Nitrogen Dioxide.
It is well recognized by the scientific community that marked fluctuations in atmospheric Ozone and
Sulphur Dioxide, and Nitrogen Dioxide concentrations are linked to a variety of adverse
environmental conditions. The ozone layer, which shields the Earth from the harmful effects of
solar ultraviolet radiation, is believed to be vulnerable to attack by fluorocarbons and other effluents.
Many scientists fear its depletion may irreversibly alter world climatic patterns.
Atmospheric sulphur dioxide and nitrogen dioxide are closely associated with the 'acid rain'
phenomenon which, like ozone depletion, has implications for the global environment.
Today's concern over the vulnerability of the ozone layer to destruction by atmospheric pollutants
has increased the demand for high-quality, globally-distributed, total Ozone and UV Spectral
measurements from a ground-based network of instrumentation. Since the early 1980’s, the
Atmospheric Environment Service of Environment Canada (AES) has conducted the development
of the Brewer Spectrophotometer for the purpose of supplementing instrumentation in the World
Ozone Network. Though the Dobson instrument has served its purpose well since the 1930’s, the
Brewer Spectrophotometer is today becoming the instrument of choice for researchers studying
Ozone, Sulphur Dioxide, Nitrogen Dioxide, and UV radiation.
At the request of the World Meteorological Organization, AES has endeavored to make the Brewer
Spectrophotometer commercially available to the international scientific community. The instrument
and its accompanying accessories are manufactured and marketed under license by KIPP &
ZONEN B.V., Delft, The Netherlands. As of 1998, more than 80 Brewer instruments have been
incorporated into the World Ozone Network and measurements are currently being taken at
research establishments in more than thirty different countries.
1. SYSTEM OVERVIEW