While most of the adjustments on the Sensor Calibration page can be left at their default values, adjustment levels are provided to tweak 

sensor values to obtain optimum results.





Sensor Calibration:





Moisture Sensor:


The values for the moisture sensor can be adjusted to fine tune the thresholds for dry, damp and rain if needed. The measured value currently generated by

the weather module is displayed below the adjustment setting to facilitate the adjustment. The default values are Dry=990 and Rain=970.


Wind Sensor:


The zero wind speed setting can be adjusted to fine tune the wind speed setting. Adjust the setting so that the wind speed is slightly above zero (i.e. .001)

when the wind sensor is completely shielded from any breeze or turbulence. The default value is .200. Note: although the value seems small, the zero wind

volts setting has a major impact on the indicated wind speed.


Later versions of SkyAlert feature a self-calibrating mechanism for the wind speed sensor. For the algorithm to correctly calibrate the wind sensor,

SkyAlert needs to have a calm period of wind for a period of time (approximately one minute). If you are installing SkyAlert in a windy environment, you may need to 

calibrate the wind sensor manually. In order to do so, close theSkyAlert program if it is running, cover the SkyAlert unit with a towel or otherwise prevent 

the wind sensor from detecting wind and then start the SkyAlert program and allow it to run for two minutes.


Installations using the mechanical wind vane anemometer have a percentage value that can be add or subtracted form the displayed wind speed as needed.


IR Sensor:


Normally, the calibration of the IR sensor can be left at the default setting of zero. Adjustments can be made if necessary.


Light Sensor:


The light sensor can be calibrated to match your particular environment and installation position. The default values are Day=500 and Dark=250.


Ambient Sensor:


The Ambient temperature sensor can be calibrated if needed. The default setting is zero.


Humidity Sensor:


Default is zero.


Barometric Sensor: (When applicable)


Adjust the pressure value to match a current known value in your area (local airport web site, etc.) if needed.


Cloudy/Very Cloudy Offset:


This adjustment dictates the difference between a Cloudy condition and a Very Cloudy condition. You may have to experiment with this setting to get

optimum results.


Solar Offset:


The solar offset makes an adjustment to the ambient temperature based on whether or not direct sunlight is shining on the weather module.


The Offset value should be adjusted to the amount of temperature increase that is noted when the sun is shining on the weather module.


You can set the relative time of day for the algorithm to begin by setting the ‘Start’ value to how many minutes after sunrise that the sun will begin


to strike the module. Conversely, set the ‘Stop’ value to the approximate time that the sun will cease warm the weather module.



Est. Sunrise/Est. Sunset:


These are the Sunrise and Sunset values SkyAlert will use to determine when to start and stop the Solar Offset algorithm. The values are estimates and should 

not be used to determine exact Sunrise ans Sunset times.

























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