• External Temperature/Humidity Sensor - measures outside temperature, outside humidity, dew-point, temperature-humidity index, normal and temperature-humidity index heating and cooling degree-days.
• Rain Collector - measures daily and total rainfall and rate of rainfall.
• Anemometer - measures wind speed, wind run, wind direction, wind chill, and wind-chill degree days.
• Solar Radiation Sensor - measures solar irradiance and incident energy.

Data Description

Temp In (inside)

temperature measured at the time stamp using the temperature sensor located in the console. (°F)

Temp Out (outside)

temperature measured using the temperature/humidity sensor at the time stamp. (°F)

Temp Hi

the highest outside temperature since the last time the high/low registers were cleared. (°F)

Temp Lo

the lowest outside temperature since the last time the high/low registers were cleared. (°F)

THI Out (Temperature/Humidity Index - also referred to as heat stress or apparent temperature)

a measure of how 'hot' the air temperature feels. When humidity is low, perspiration can more easily evaporate, the apparent temperature is cooler than the air temperature. In high humidity, the apparent temperature is warmer than the air temperature.

• Displays "---" if outside temperature is below 68°F (20°C)
• Displays "high" if outside temperature is above 125°F (52°C)

Heat DD (Heating Degree-Days)

an index used to compare heating energy demand between different climatic regions.

• Heating degree-days = 65°F (base) - mean daily temperature. Positive results only. Negative results are treated as zero. (°F)
• Uses temperature/humidity sensor

Cool DD (Cooling Degree-Days)

an index used to compare cooling energy demand between different climatic regions.

• Cooling degree-days = mean daily temperature - 65°F (base). Positive results only. Negative results are treated as zero. (°F)
• Uses temperature/humidity sensor

Chill DD (Wind Chill Degree-Days)

a measure of the accumulation of heat. Similar to Heat DD except uses THI Out (apparent temperature) instead of Temp Out (outside temperature).

THI DD (Temperature/Humidity Index Cooling Degree-Days)

a measure of the accumulation of heat. Similar to Cool DD except uses THI Out (apparent temperature) instead of Temp Out (outside temperature).

Solar Rad (Solar Radiation)

a measure of the intensity of the sun's radiation reaching the earth's surface.

• joules/meter^2
• Spectral bandwidth between 400 and 1100 nm

Solar Energy (Solar Days)

sum of both direct and diffuse components of solar irradiance over the archive interval. (joules/centimeter^2)

Bar(Barometric Pressure)

a measure of current atmospheric pressure adjusted to reflect local barometric pressure.

Wind Speed

can display the following units: miles per hour (MPH), kilometers per hour (km/h), meters per second (m/s), or knots

Wind Hi

highest wind speed recorded since the registers were last cleared.

Wind Dir

wind direction displayed in the compass rose in degrees. Range is 0 to 360° with 0° set to North.

Wind Chill (Equivalent Index)

is an air temperature index that measures the heat loss from exposed human skin surfaces.

Wind Run

a measure of the amount of wind that passes a given point during the measurement period. To calculate wind run, multiply the MPH by the length of time in the measurement period. For example, 10 MPH for 12 hours would be 120 miles of wind run.

Rain

a measure of daily or total rainfall. (inches)

Rain Rate

a measure of the daily or total rate of rainfall. (inches)

Hum Out (Outside Humidity)

relative humidity measured using the temperature/humidity sensor at the time stamp. (°F)

Dew Point

the temperature to which air must be cooled for saturation (100% relative humidity) to occur, providing there is no change in water content. (°F)

A. Per (Archive Period)

the interval at which data is recorded in the weather station archive memory. (Currently set at 30-minute intervals.)

Power

Battery voltage to the weather station console.

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