Kipp & Zonen BREWER MK IV, Instruction Manual

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16-10-200716-10-2007
MKIV OPERATOR’S MANUAL 43
SUM Summary Data File
SUM reads the daily raw data (BJJJYY.nnn) file and generates a new (SJJJYY.nnn) file
which contains only data summary information. In addition, Umkehr data is processed and
put into a separate (UJJJYY.nnn) file.
The SUM command, and the various summary printout commands are generally performed
at local midnight as part of the ED command.
TE
Temperature Printout
TE results in the Brewer temperature (Thermistor #1) in degrees Celsius, along with its
equivalent (0 to 5.00v) voltage, to be printed.
If the Brewer has a moisture sensor option, the moisture (in grams/m
3
) is also printed or
displayed.
See also Appendix A for the average file.
TI
Time Set
TI allows the operator to set the internal clock of the Brewer, provided the clock option is
turned on in the instrument configuration File. Brewer time is GMT or CUT and is entered as
a six digit string (hhmmss). If the internal clock has been turned off in software, there will be
an “E” (external) displayed on the computer screen, and the operator will be given the
opportunity to turn the internal clock back on. An “I” is displayed on the screen if the system
is using the Brewer’s internal clock.
TT
TeleType Communications
TT sets the Brewer program to its teletype mode, whereby the operator may communicate
directly with the Brewer via the computer keyboard and a set of low level commands.
Exit from teletype mode with the home key. Ctrl-x will allow a line to be retyped.
See Appendix H for more explanation on the TeleType feature.
TU Test UV Port Alignment
TU uses an external quartz-halogen lamp mounted over the UV dome to find the zenith
motor step position for which the radiation intensity is a maximum through slit #1 of the
spectrometer slit mask.
This is an alignment test and should be performed if alignment of the UV optics is suspect.
The results of the factory tests are found in the Final Test Record and are nominally 2112+/-
4 steps.
UM
Umkehr Observations
UM results in data being collected which can be processed to produce an Ozone vs. Height
profile. Data is normally collected between solar zenith angles of 60° and 90° in the morning
and in the afternoon.
The zenith prism is pointed to a solar zenith angle of 0°, FW#1 is set to the 0 position, FW#2
is set to the 0 position, the iris is opened, and the Tracker is rotated
CCW until it is perpendicular to the sun. Intensity measurements are made at two sets of
wavelengths - long (320-330nm) and short (310-320nm), and continue until they are
interrupted by the operator, or by the next zenith angle in a schedule.
Raw data is put into the BJJJYY.nnn file, and is processed to a UJJJYY.nnn file by the SUM
command.
See also Appendix A and Appendix E.
UV Related Commands
There are a number of Brewer commands that are related to measurements taken through
the Ultra Violet (UV) Dome, and they are grouped together here for convenience. There are
typically two UV scan lengths - ‘short’ UVB scans, which cover the range from 290nm to
325nm, and ‘extended’ UV scans which cover the range 286.5nm to 363nm.
UV scans are ‘Ozone only’ commands
4. BREWER COMMANDS