Glossary Of Terms - Ambient Weather OBSERVERIP 2.0 User Manual

4. Access point deactivation
The ObserverIP 2.0 does broadcast a Wi-Fi network to connect the device to Wi-Fi we have included
an option to turn this off once it has connected to Wi-Fi

5. Glossary of Terms

Term
Absolute Barometric
Pressure
Accuracy
Barometer
Calibration
Dew Point
Hectopascals (hPa)
Hygrometer
Inches of Mercury (inHg)
Rain Gauge
Version 1.1 ©Copyright 2022, Ambient LLC. All Rights Reserved.
Absolute pressure is the measured atmospheric pressure and is a
function of altitude, and to a lesser extent, changes in weather
conditions.
Absolute pressure is not corrected to sea-level conditions. Refer to
Relative Barometric Pressure.
Accuracy is defined as the ability of a measurement to match the actual
value of the quantity being measured.
A barometer is an instrument used to measure atmospheric pressure.
Calibration is a comparison between measurements – one of known
magnitude or correctness of one device (standard) and another
measurement made in as similar a way as possible with a second device
(instrument).
The dew point is the temperature at which a given parcel of humid air
must be cooled, at constant barometric pressure, for water vapor to
condense into water. The condensed water is called dew. The dew point
is a saturation temperature.
The dew point is associated with relative humidity. A high relative
humidity indicates that the dew point is closer to the current air
temperature. Relative humidity of 100% indicates the dew point is equal
to the current temperature and the air is maximally saturated with water.
When the dew point remains constant and temperature increases,
relative humidity will decrease.
Pressure units in SI (international system) units of measurement. Same
as millibars (1 hPa = 1 mbar)
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.
Pressure in Imperial units of measure.
1 inch of mercury = 33.86 millibars
A rain gauge is a device that measures liquid precipitation (rain), as
opposed to solid precipitation (snow gauge) over a set period.
Definition
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