Ambient Weather WS-1171 Manuel de l'utilisateur - Page 13
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5. Glossary of Terms
Term
Absolute Barometric
Pressure
Accuracy
HectoPascals (hPa)
Hygrometer
Inches of Mercury (inHg)
Range
Relative Barometric
Pressure
6. Specification
6.1 Wireless Specifi
•
Line of sight wireless tran
•
Frequency: 433 MHz
•
Update Rate: 48 seconds
6.2 Measurement
The following table provides specifica
Mea
surement
Indoor Temperature
Outdoor Temperature
Indoor Humidity
Outdoor Humidity
Barometric Pressure
6.3 Power Consumption
•
Base station : 3 x AA 1.5V Alkaline batteries
•
Remote sensor : 2 x AAA 1.5V A
•
Battery life: Minimum 12 mont
Version 1.8
©Copyright 2011, Ambient LLC. All Rights Reserved.
Relative ba
rometric pressure, corrected to sea-level. To compare
pressure conditions from one location to another, meteorologists correct
pressure to sea-level condition
you rise in altitude, the sea-level corrected pressure (the pressure yo
location would be at if located at sea-level) is generally higher than your
measured pressure.
Accuracy is defined as the ability of a measurement to match the actual
value of the quantity being measured.
Pressure units in SI (
international system) units of measurement. Same
as millibars (1 hPa = 1 mbar)
A hygrometer is a device that measures
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
Range is defined as the
Measured barometric pressure relative
conditions.
s
cations
smission (in open air): 300 feet
Specifications
tions for the measured parameters.
Range
32 to 140 °F
-40 to 149 °F
1 to 99 %
1 to 99%
8.85 to 32.50 inHg
lkaline batteries
hs for base station
Definition
s. Because th
e air pressure decreases as
relative humidity. Relative
amount or extent a value can be measured.
to your location or ambient
A
ccuracy
± 2 °F
± 2 °F
± 5% (only
guaranteed
between
20 to 90%)
± 5% (only guaranteed
between 20 to 90%)
± 0.08 inHg (within
range of 27.13 to 32.50
inHg)
ur
Resolution
0.1 °F
0.1 °F
1 %
1 %
0.01 inHg
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