La Crosse Technology WS-2814U-IT Operation Manual

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La Crosse Technology WS-2814U-IT Operation Manual Manual pdf 24 page image

P a g e | 24RESET TOTAL RAINFALL AMOUNTThe total rainfall measurement is displayed in the unit of mm or inch. It shows the total rainfallaccumulated since last reset of the total rainfall amount.In either Mode 1 or Mode 2 display, press and release the MIN/MAX button until the displayshows the Total Rainfall value.Press the ▲/DATE button to reset the Total Rainfall reading on the display. The total rainfallamount will be reset to 0, and the time is updated to current time.Note: Until the first rainfall total reset is performed, the time and date of the total rainfall aredisplayed as "- - -.--. ----". After the rainfall total is reset, the rainfall total display will indicate thedate and time of the last rainfall total reset.COMMON TERMS:DEW POINT TEMPERATUREDew point is the saturation point of the air, or the temperature to which the air has to be cooledin order to create condensation (100% humidity). Dew Point Temperature reflects the point atwhich condensation and evaporation are equal.Dew Point Temperature is the accurate measure of the quantity of water vapor in the air. DewPoint Temperature does not change with air temperature changes. It only changes withmoisture content changes with barometric pressure stable.Note: Dew Point is lower than the actual temperature.Note: A Frost Point occurs when the Dew Point Temperature is below freezing.RELATIVE HUMIDITYRelative humidity is how close the air is to saturation (how much moisture the air can hold). Ona warm day, more water can evaporate as there is more thermal energy to do the work ofevaporation. Generally the higher the temperature the lower the RH as more evaporation takesplace. The RH may be low and you can still have condensation when at the Dew PointTemperature.WIND CHILL-EQUIVALENT TEMPERATUREA fictional temperature that is felt by human beings under certain conditions instead of themeasured temperature and which can be taken into account during low temperatures. For LaCrosse Technology Products these conditions are a Temperature below 40 degrees Fahrenheitand a Wind velocity above 5 mph.WIND GUSTA wind gust is a sudden, brief increase in the speed of the wind (less than 20 seconds) followedby a lull. This is different from a sustained wind.