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CALIBRATION
Menu Shortcut: Settings X Calibration
Virtual Weather Station allows you to calibrate for improved
accuracy. In addition, if your wind speed sensor is below the
expected reading due to bearing life or trees obstructing the
anemometer, these errors can be adjusted to provide realistic
values.
The calibration takes the form of the following equation:
Calibrated Value = Gain x Measured Value + Offset
The table provides solutions for typical measurement problems:
PROBLEM SOLUTION
The wind speed is reading 50% lower than it
should be because the sensor is obstructed
by trees. In other words, when the wind
speed reads 4.8 km/h (3 mph), it is actually
9.6 km/h (6 mph).
Set the wind speed
gain to 2.00.
One of my temperature sensors is off by 3° Set the temperature
offset to 3.00
I installed my anemometer incorrectly, and
when it point s north, it should measure south
Set the wind
direction offset to
180.00
Changing the calibration settings in Virtual Weather Station will not adjust the parameters displayed from
the console. Setting the gain to 0 will cause the value to always read 0. Only set the gain to 0 if you do not have
the sensor in your system.
PRECISION
Menu Shortcut: Settings X Precision
Precision is the number of decimal places that Virtual Weather
Station allows you to customize for each variable unless otherwise
noted on specific display panels. For example, a precision of two
would be represented as 3.14, and a precision of three would be
represented as 3.141. These precision values are represented in
files, HTML tags and other various displays.
The precision can be changed for the values (which include
averages) and rates of change. Changing the precision for the
temperature will change all of the temperatures (i.e., indoor and
outdoor).
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