La Crosse Technology WS-8035U Instruction Manual

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La Crosse Technology WS-8035U Instruction Manual Manual pdf 18 page image

18H. Barometric Air Pressure Reading1. The actual barometric air pressure is displayed directly under theweather forecast icon2. The relative air pressure is calibrated by the user through theprogramming mode.3. Please Follow the programming instructions in section F of theDetailed Set Up Guide to set this feature.I. Air Pressure History Bar Chart1. The bar graph shows in hPa (Hekto Pascal) the recorded airpressure over the past 24-hours.2. The horizontal axis shows the hours at increments of -24 hours, -18hours, -12 hours, -9 hours, -6 hours, -3 hours, and 0 hours(current).3. The vertical axis is set by hPa: the “0” on this axis represents thecurrent hPa, and + or – 1,3,5, or 7 shows (in hPa) how high or lowthe past air pressure was as compared to the current one.4. The “0” on the vertical axis indicates the current air pressure value.5. The “0h” on the horizontal axis indicates the current hour, thus thecurrent air pressure also.6. Each bar on the bar graph represents a value of 0.03 hPa, and eachbar also has a corresponding value on the verticle axis.7. Air pressure trends can be determined by simply glancing at thebar graph.a. If the bars are rising (higher on the right than the left) then theair pressure has a rising trend, and the weather shouldimprove.b. If the bars are dropping (lower on the right than the left) thenthe air pressure has a falling trend, and the weather shouldworsen.8. Multiply the two values to find past air pressure (note the + or –sign of values on the verticle axis); i.e. 0.03 hPa x 3 = 0.09 hPa,now add this value to the air pressure (in LCD 4) to evaluate whatpast air pressures have been.9. The bar chart will constantly scroll to avoid burnout of the LCD.Note: This feature cannot be turned off.