Limits TAB

 

This tab allows the definition of the threshold limits associated with each environmental condition in terms of the sensor readings.

 

NB: The default values are empirically obtained for a mild climate (Algarve - south of Portugal). One should determine by empirical observation the best values for the region were the unit is installed.

 

In figure below, the CLEAR condition has been defined for sky infrared temperatures less than -8ºC, the CLOUDY condition for sky infrared temperatures ranging between -5ºC and 0ºC and OVERCAST condition (very cloudy) for infrared temperatures between 0ºC and 30ºC. Note that the Overcast value of 30ºC corresponds to Cloud “Unknown” condition defined under Setup TAB /Alarms section.

 

The DRY condition has been defined for values greater than 2000 (cycles), the WET condition for values ranging between 2000 and 1700 (cycles) and RAIN condition for values between 1700 and 400 (cycles). Note that the Rain value of 400 (cycles) corresponds to Rain “Unknown” condition defined under Setup TAB /Alarms section.

 

The CALM condition has been defined for values smaller than 5 (km/h), the WINDY condition for values ranging between 5 – 10 (km/h), whereas the VERY WINDY condition for values ranging between 5 – 99 (km/h)

 

The DARK condition has been defined for values greater than 2100 (K ohms), the LIGHT condition for values ranging between 2000 – 6 (K ohms), whereas the VERY LIGHT condition for values ranging between 6 – 0 (K ohms)

 

NB: The temperature and speed units correspond to those defined in Setup TAB /Device section.

 

 

Limits TAB

 

Limits TAB  when Wind sensor is not present

 

The Cloud Condition threshold limits are subject to the following rules:

  • Clear value is the smallest;
  • Overcast value is the largest;
  • Cloudy value must be smaller than Overcast value but larger than Clear value.

 

The Rain Condition threshold limits are subject to the following rules:

  • Dry value is the largest;
  • Rain value is the smallest;
  • Wet value must be larger than Rain value but smaller than Dry value.

 

The Wind Condition threshold limits are subject to the following rules:

  • Calm value is the smallest;
  • Very Windy value is the largest;
  • Windy value must be smaller than Very Windy value but larger than Calm value.

 

The Light Condition threshold limits are subject to the following rules:

  • Dark value is the largest;
  • Very Light value is the smallest;
  • Light value must be larger than Very Light value but smaller than Dark value.

 

The system performs validations using these above rules.

 

The values displayed on the screen are used by software to determine the different sky conditions. While entering new values, these new values are immediately used in the next calculation cycle.

 

It is advisable to stop the program before proceeding with the change of theses values.

 

The color associated with each condition, as well as its description, may be changed by right-clicking the mouse over the cell containing the condition description as pointed by red arrows in figure below.

 

 

 

Condition descriptions

 

 

The following color matrix window is displayed allowing the selection of a different color, as well as, the possibility to change the description associated with the condition.

 

 

 

Color matrix window

 

The colors are selected by left-clicking with the mouse over the desired color or by navigating with the arrow keys when the square cursor is blinking.

 

The condition description is displayed and it may also be altered.