Vaisala HydroMet User's Guide Page 84

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User’s Guide ______________________________________________________________________
82 ___________________________________________________________________M210785EN-E
Meteorological Calculations
In this category, you are selecting and configuring calculations for
derived quantities.
Some calculations, such as the wind calculation, provide two
calculation options. These options include the simple, quick
calculations that are fast to configure and the generic ones that offer
more possibilities but are more complex and laborious. The information
pane includes more detailed information on the differences between
these calculation options.
For more information on meteorological calculations, refer to the
related Technical References.
Unit Conversions
All the internal calculations within the QML logger are done in SI units.
With unit conversion calculations, you can convert the internally used
SI units to desired units for logged or reported values. For example, you
can convert hPa into mmHg.
Arithmetic Operations
The conversion module also enables various arithmetic operations with
one or two operands, which can be any measured, calculated, or
manually entered parameters. The operations include: add, subtract,
multiply, divide, square root, power, logarithm, logarithm10, exponent,
absolute, sine, cosine, and tangent.
NOTE
Only SI units can be used for internal calculations. The converted
values cannot be used as input values for most calculations. These
values can only be used for logging and reports.
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