Ambient Weather OBSERVER WS-1002-ARRAY Manuale d'uso - Pagina 14
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Term
Also, strong winds, particularly with very hot, dry air, can be extremely hazardous.
The Heat Index Chart shaded zone above 105°F shows a level that may cause
increasingly severe heat disorders with continued exposure or physical activity.
Heat Index is not calculated below 80°F.
HectoPascals
Pressure units in SI (international system) units of measurement. Same as millibars
(hPa)
(1 hPa = 1 mbar)
Hygrometer
A hygrometer is a device that measures relative humidity. Relative humidity is a
term used to describe the amount or percentage of water vapor that exists in air.
Inches of
Pressure in Imperial units of measure.
Mercury
1 inch of mercury = 33.86 millibars
(inHg)
Rain Gauge
A rain gauge is a device that measures liquid precipitation (rain), as opposed to solid
precipitation (snow gauge) over a set period of time.
All digital rain gauges are self emptying or self dumping (also referred to as tipping
rain gauge). The precision of the rain gauge is based on the volume of rain per
emptying cycle.
Range
Range is defined as the amount or extent a value can be measured.
Relative
Measured barometric pressure relative to your location or ambient conditions.
Barometric
Pressure
Resolution
Resolution is defined as the number of significant digits (decimal places) to which a
value is being reliably measured.
Solar
A solar radiation sensor measures solar energy from the sun.
Radiation
Solar radiation is radiant energy emitted by the sun from a nuclear fusion reaction
that creates electromagnetic energy. The spectrum of solar radiation is close to that
of a black body with a temperature of about 5800 K. About half of the radiation is in
the visible short-wave part of the electromagnetic spectrum. The other half is mostly
in the near-infrared part, with some in the ultraviolet part of the spectrum.
Version 2.1
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