La Crosse Technology WS-7058U instruction manual Rainfall History, Rainfall Quantity

pressure (in LCD 5) to evaluate what past air pressures have been. Air pressure trends can be determined by simply glancing at the bar graph. If the bars are rising (higher on the right than the left) then the air pressure has a rising trend, and the weather should improve. If the bars are dropping (lower on the right than the left) then the air pressure has a falling trend, and the weather should worsen.

A.RAINFALL HISTORY

The bar graph will also display the rainfall history; this mode is indicated by the appearance of the word “RAIN” at the top-central position of LCD 4 (see programming mode).

The horizontal axis measures the past time periods, with “0” representing the current day, and “7” representing 7 days ago. The graph reads from right to left.

The vertical axis measures the rainfall in either preferred increments of inches or millimeters. The normal (default) measurement scale is: in millimeters {0, 1, 3, 5, 10, 30, 50, 100}; in inches {0, 0.1, 0.3, 0.5, 1, 2, 3, 5, 10} . If rainfall exceeds 7 inches (178mm) the measurement scale automatically changes to: in inches {0, 1, 3, 5, 10, 20, 30, 50, 100}; in millimeters {0, 10, 30, 50, 100, 300, 500, 1000}.

V.RAINFALL QUANTITY

The rainfall quantities can be displayed 3 different ways, represented by 3 different time period icons, and measured in 2 different units of measure (inches or millimeters). The quantities are displayed in the lower portion of LCD 5, and the time period icons appear between the quantity and the bar graph. Following is a list of the 3 time period icons and a description of what they represent.

a blank screen—(the default setting) shows the total accumulated rainfall since the last set-up or manual reset.

“1h”—shows the rainfall measurement of the past hour. Information is updated every hour on the half-hour (i.e. …at 6:30, at 7:30 and at 8:30…).

“rain icon”—resets automatically at the beginning of a rainfall, it will show and keep track of the current rainfall quantities, once the current rainfall is complete it will display the quantity of that rainfall until a new rain begins, then it will automatically reset.

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