Distance = 4 x (20 – 5)’ = 60’.
Many installations are not perfect and installing the weather station on a roof can be difficult. Thus,
you can calibrate for this error with a wind speed multiplier.
In addition to the installation challenges, wind cup bearings (moving parts) wear over time.
Without a calibrated source, wind speed can be difficult to measure. We recommend using a calibrated
wind meter (available from Ambient Weather) and a constant speed, high speed fan.

5.13.4 Calibration Mode

While in the Normal Mode, press the ON/OFF key for 8 seconds to enter the calibration mode, and
the ADJ icon will be displayed. You can skip over any setting by selecting the enter key. To exit the
calibration mode at any time, select the history key
1. Wind Speed Calibration (default is 1.0, adjustment range 0.75 to 1.25). Press the up or
down key to increase or decrease the wind speed multiplier to match the calibrated source.
Press the ON/OFF key, and the value will return to the uncalibrated value.
2. Indoor Temperature Calibration. Press the enter key to calibrate the temperature in 0.1°C
(0.18 °F) increments. Press the up or down key to increase or decrease the temperature bias
to match the calibrated source. Press the ON/OFF key, and the value will return to the
uncalibrated value.
3. Indoor Humidity Calibration. Press the enter key to calibrate the humidity in 1%
increments. Press the up or down key to increase or decrease the humidity bias to match the
calibrated source. Press the ON/OFF key, and the value will return to the uncalibrated value.
4. Outdoor Temperature Calibration. Press the enter key to calibrate the temperature in 0.1°
increments. Press the up or down key to increase or decrease the temperature bias to match
the calibrated source. Press the ON/OFF key, and the value will return to the uncalibrated
value.
5. Outdoor Humidity Calibration. Press the enter key to calibrate the humidity in 1%
increments. Press the up or down key to increase or decrease the humidity bias to match the
calibrated source. Press the ON/OFF key, and the value will return to the uncalibrated value.
Press the enter key to exit the calibration mode.
Note: The dew point and wind chill are based on the calibration values.
6. PC Software
Note: EasyWeather software is included with this weather station package. Easy Weather runs on
most PC operating systems. Cumulus is free internet publishing PC software application by
Sandaysoft. WeatherSnoop is a paid software and internet publishing application for Macs by
Tee-Boy.
Version 1.10 ©Copyright 2011, Ambient LLC. All Rights Reserved. Page 27