Ambient Weather WS-108 Uživatelský manuál stáhnout pdf (Strana 39)

Term

Definition

(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

Barometric

Pressure

Measured barometric pressure relative to your location or ambient conditions.

Resolution

Resolution is defined as the number of significant digits (decimal places) to which a

value is being reliably measured.

Solar

Radiation

A solar radiation sensor measures solar energy from the sun.

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.

Thermometer

A thermometer is a device that measures temperature. Most digital thermometers are

resistive thermal devices (RTD). RTDs predict change in temperature as a function

of electrical resistance.

An ultraviolet sensor (UV sensor) is a device that measures UV light from the Sun.

The UV index (UVI) is an international standard measurement of how strong the

ultraviolet (UV) radiation from the sun is at a particular place on a particular day. It

is a scale primarily used in daily forecasts aimed at the general public.

Its purpose is to help people to effectively protect themselves from UV light, of

which excessive exposure causes sunburns, eye damage such as cataracts, skin

aging, and skin cancer.

Wind Vane

A wind vane is a device that measures the direction of the wind. The wind vane is

usually combined with the anemometer. Wind direction is the direction from which

the wind is blowing.

8. Specifications

8.1 Wireless Specifications

 Line of sight wireless transmission (in open air): 330 feet, 100 feet under most conditions

 Update Rate: Outdoor Sensor: 16 seconds, Indoor Sensor: 64 seconds

 Frequency: 915 MHz

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