11.
Glossary
of
Terms
Term Definition
Accuracy Accuracy
is
defined as the ability of a measurement to match the actual
value of the quantity being measured.
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.
Range
Range is defined as the amount or extent a value can be measured.
Resolution
Resolution is defined as the number of significant digits (decimal places)
to which a value is being reliably measured.
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.
12.
Specifications
12.1
Wireless
Specifications
•
Line of sight wireless transmission (in open air): 300 feet.
•
Frequency: 433 MHz
•
Update Rate: 60 seconds for rain sensor and thermo-hygrometer sensor, 16s for wind
sensor.
12.2
Measurement
Specifications
The following table provides specifications for the measured parameters.
Measurement Range
Accuracy
Resolution
Indoor Temperature
0 to 60 °C
± 1 °C
0.1 °C
Outdoor Temperature
-40 to 60 °C
± 1 °C
0.1 °C
Indoor Humidity
10 to 99 %
± 5% (only guaranteed
between 20 to 90%)
1 %
Outdoor Humidity
10 to 99%
± 5% (only guaranteed
between 20 to 90%)
1 %
Rain
0 to 394 in.
±
5%
0.01 in
Wind Direction
0 - 360
º
45
º
(8 point compass)
45
º
(8 point compass)
Wind Speed
0 to 110 mph
±
1m/s or 10%
(whichever is greater)
0.1m/s
