BW Technologies GasAlertMicro 1, Руководство пользователя

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GasAlertMicro
Users Manual
E.D.M. Workbook Features and
Functions
The customized Excel workbook created by the E.D.M.
wizard provides the datalogger data in a preformatted layout.
Several automatic features and functions are available to
simplify the data management process, such as color-coding,
data filtering and automatic charting.
Data workbook format
Titles and worksheets
The workbook is titled according to the instrument type used
to collect the data. The title is shown at the top of the data
file, i.e. “GasAlertMicro data file”.
Each workbook will contain as many sheets as is necessary
to hold all of the imported data. Excel has a built-in limit of
65,535 lines per worksheet. Since datalogger files may
include up to 2,100,000 lines of information, the information
is split across several worksheets in the same workbook
when required.
Sheets are named according to the serial number of the
instrument used to record the data. If there is more than one
sheet for a given instrument, the sheet names will be
appended with –1, -2, and so on, as in ‘123456-1’, ‘123456-
2’ etc.
Type and order of displayed data
Data is presented in chronological order by date. The day of
the week and the instrument serial number is also presented,
followed by the instantaneous gas readings and time
weighted-average (TWA) readings as calculated by the
instrument.
Status messages for each sensor are also shown. These
messages indicate if the sensor is operating normally, or has
some type of alarm, failure or condition that is different from
normal operation. Possible conditions include low alarm, high
alarm, TWA alarm, calibration, last calibration, alarm
setpoints and sensor self-test failure. Status codes for the
sampling pump (if present), data logger, instrument battery
and instrument alarms are also shown.
Sensor readings that exceed the alarm points are highlighted
in color. Yellow shading indicates low alarm conditions. Red
shading indicates high or TWA alarm conditions.
Overlapping or older data
Because the data is sorted by date & time, the data file will
not contain overlapping data unless the internal clock
settings of the datalogger instrument have been changed.
In most cases, data files will contain data that has been
previously downloaded from the card. This is a consequence
of the large data storage capacity of the MultiMediaCard
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