Omega WMS-16 - Manual (Page 10)

WMS-16 Weather Station Operator’s Manual 9
Figure 7 Row and Column Presentation of Current Data
Weather Trends
The current observations text screen displays several weather
features in addition to the current sensor readings. These
values show the extent to which the measured parameters have
varied over an extended period:
Ø Peak wind speed, with the highest value
recorded during the past 10 minutes
displayed
Ø The high and low temperatures for the day
(based on measurements taken since 12
midnight), and the changes in temperature in
the past hour.
Ø The high and low barometric pressure for
the day (based on measurements taken since
12 midnight), and the change in barometric
pressure over the past three hours.
Ø The change in relative humidity over the
past hour.
Ø Three values for precipitation accumulation,
with totals for the past logging period, for
the current day (rainfall since 12 mid-night),
and for the current month (rainfall since the
first of the month, according to the date set
through the Station Setup procedure.
Ø Caution; If power is interrupted the stored
trend values, will be cleaned, and reset to the
current, starting day & time. All three
precipitation totals will go to 00.00 and
today’s hi/low will become the current
temperature.
Display Log By Hours
Press “3”, at the main menu to view the WMS-16’s stored data
and to specify the amount of data to be retrieved in hours. If
you wish to view more than a full day’s data, or fractions of
days (two-and-a-half days), chose the selection, “4” Display
Log by Days, retrieves data in daily blocks with a minimum
retrievable block of one full day’s data.
After selecting “3” from the main menu, specify the number of
hours of data to be retrieved.
The data will be displayed in the format shown in Figure 8.
The data is organized as follows:
Ø The top line shows date and time at the right
margin.
Ø The weather data is organized into columns,
with an abbreviation for each parameter and
the units of measure used (selected through
the setup menu) shown at the top of the
column.
Ø TIME- The time at which the data was
logged; this time is based on the time that
was set through the setup procedure (see
Station Setup): in military time (24-hour
clock).
Ø WS- Wind speed: in miles per hour or
meters per second.
Ø WD- Wind direction in degrees.
Ø PK- Peak wind speed: in miles per hour or
meters per second. This is the highest wind
speed measured over any two second
interval.
Ø BP- Barometric pressure: in inches of
mercury or millibars. This is the average
pressure measured during the logging
period.
Ø T1- Temperature measured by the
temperature/RH probe: in degrees
Fahrenheit or degrees Celsius.
Ø RH- relative humidity measured by the
temperature/RH probe: in percent
Ø T2- Temperature measured by an auxiliary
probe (if used); in degrees Fahrenheit or
degrees Celsius.
Ø SR- Solar radiation; in watts per square
meter.
Ø RF- Precipitation (rainfall) accumulated
during the logging period: in inches or
millimeters.
The logging interval is selected by the user. The range is one
minute to sixty minutes. A maximum of 18 records can be
displayed on a single screen, so if more than 18 periods were
requested the data will be continued on subsequent screens.
Ø To view the next screen, simply press the
space bar. Each successive screen may be
viewed by pressing the space bar. You may