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®

PS-3209

Wireless Weather Sensor

5

013-15518A

Consider using the PS-3553 Weather Vane Accessory 

when measuring weather conditions including wind 

speed and direction.

Measurement Tips

Equilibration Time

After a rapid change in temperature or humidity, the 

sensor may take several seconds to come to equilibrium 

with the environment. Observe the measurements and 

wait for them to stabilize.

Alignment with Wind

Hold the sensor so that wind blows straight into the front 

of the anemometer.

Shade

The sensor, especially the temperature and humidity 

transducers, must be out of direct sunlight to make 

accurate measurements.

Moisture

Protect the sensor from liquid water. The sensor is rug

-

ged and weather-resistant, but not waterproof. 

Wireless Weather Sensor

Primary Measurements

The primary measurements are wind speed, 

temperature, relative humidity, and barometric pressure.

Wind Speed

The sensor determines Wind Speed from the rate of 

rotation of the anemometer (wind turbine). It assumes 

that air is flowing straight into the turbine. Wind speed 

must be at least 0.5 m/s to be measured accurately. 

Wind speed is measured in units of m/s, cm/s, mm/min, 

km/h, mph (miles per hour), knots, and ft/s (feet per 

second).

CAUTION: Do not try to measure high-speed wind such 

as from leaf-blowers or severe storms. 

Temperature

Temperature is measured by the thermistor temperature 

transducer. To work accurately, the transducer must be 

in shade. Temperature is measured on the Celsius, 

Fahrenheit, and Kelvin scales.

Relative Humidity

Relative humidity is measured by the humidity 

transducer. To work accurately, the transducer must be 

in shade and at air temperature. Relative humidity is 

reported as a percentage representing the ratio of the 

partial pressure of water vapor to the saturated vapor 

pressure. Relative humidity is reported as “%”.

Barometric Pressure

Barometric Pressure is measured by a pressure 

transducer in the sensor’s “window”. The reported 

Barometric Pressure is the actual air pressure, not 

sea-level corrected pressure. Barometric Pressure is 

measured in units of kPa (default), psi, N/m

2

, atm, torr, 

hPa, inHg, mmHg, mbar, Pa, and inH

2

O

Secondary Measurements

Each secondary measurement is a calculation based on 

one or more of the primary measurements.

Absolute Humidity

Absolute Humidity (or water vapor density) is a measure 

of the mass of water vapor present in a given volume. It 

Wireless Weather Sensor and Weather Vane Accessory

Содержание PS-3209

Страница 1: ...rence Guide 013 15518A Wireless Weather Sensor with GPS PS 3209 Included Equipment Item Included Equipment Item Wireless Weather Sensor with GPS 1 USB to Micro USB Cable 2 2 1 1 2 Weather Resistant Ga...

Страница 2: ...s a rechargeable battery pack The sensor measures wind speed wind direction barometric pressure humidity ambient temperature light level UV index and magnetic heading The GPS module reports latitude l...

Страница 3: ...ll continue to blink red This indicates that the device is ready to connect to GPS sat ellites and connect wirelessly via Bluetooth to a comput ing device such as a computer or tablet To turn off the...

Страница 4: ...S and the Battery Status LEDs operate as follows depending on the type of connection For a connection to the USB Charger or a USB Port For a wireless Bluetooth connection Using the Weather Sensor The...

Страница 5: ...measured in units of m s cm s mm min km h mph miles per hour knots and ft s feet per second CAUTION Do not try to measure high speed wind such as from leaf blowers or severe storms Temperature Temper...

Страница 6: ...r vapor pressure in kPa Sea level Corrected Pressure A typical weather station does not report the actual measured barometric pressure Rather it reports a sea level corrected value Use this formula to...

Страница 7: ...llites again Wireless Light Sensor The Wireless Light Sensor measures illuminance mea sured in lux or lumen per square meter and ultra violet index UVI For greatest accuracy make sure that the white d...

Страница 8: ...your responsibility to recycle your electronic equipment per your local environmental laws and regulations to ensure that it will be recycled in a manner that protects human health and the environmen...

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