Acu-Rite 02036WB, 02037W Barometric Pressure, Problem Possible Solutions, Reception, For high/low

USE

Barometric Pressure

Barometric pressure, also called atmospheric pressure, is defined as the pressure at any location on the Earth, caused by the weight of the column of air above it. At sea level, atmospheric pressure has an average value of one atmosphere, and gradually decreases as altitude increases.

The weight of the air mass, or atmosphere, that envelopes Earth exerts pressure on all points of the planet's surface. Meteorologists use a tool called a barometer to measure atmospheric pressure. At sea level the atmospheric pressure is approximately 1 kilogram per square centimeter (14.7 pounds per square inch), which will cause a column of mercury in a mercury barometer to rise 760 millimeters (30.4 in).

Subtle variations in atmospheric pressure greatly affect the weather. Low pressure generally brings rain. In areas of low air pressure, the air is less dense and relatively warm, which causes it to rise. The expanding and rising air naturally cools, and the water vapor in the air condenses, forming clouds and the drops that fall as rain. In high pressure areas, conversely, the air is dense and relatively cool, which causes it to sink. The water vapor in the sinking air does not condense, leaving the skies sunny and clear.

This weather station displays the current barometric pressure, as well as a pressure indicator arrow of the trend (rising, falling or steady), pictured below. The multi-variable history chart also tracks and display the changes in pressure for the last 12 hours (-12, -6, -3, -2, -1, 0). The chart allows you to monitor the rate of change over time. These features can assist you in forecasting changes in the weather.

TROUBLESHOOTING

		Problem		Possible Solution(s)
				Relocate the display console and/or the outdoor
				sensor. The units must be within 330 feet (100
			Bad	meters) of each other. Make sure both units are
				placed at least 3 feet (.91 m) away from electronics
Wireless Sensor				that may interfere with the wireless communication
	Reception			(such as TVʼs, microwaves, computers, etc).
				NOTE: It may take up to 20 minutes for the display
				console to re-synchronize with the sensor when
				batteries are replaced. Use lithium batteries in
			no bars	sensor when temperature is below -4ºF (-20ºC).
				Make sure the A-B-C switch selection in the battery
				compartments of both the display unit and sensor
				match each other.
				Batteries may need to be replaced.
Display Console				Check that batteries are correctly installed.
Screen Not Working				Press the reset button located on the back of the
				display unit to reset the entire unit. Please note that
				all of the date and time information will need to be
				entered manually after a reset.
Precision Forecast				The Precision Forecast will not display predicted
				high or low temperatures for the first few hours
displaying “- -”				after powering on or resetting. During this initial
for high/low				learning mode, the weather forecast will collect
				data to learn your weather patterns.
				If the forecast seems wildly inaccurate, make
				certain that your geographic region is selected
Precision Forecast				properly. The geographic region selection can
is Inaccurate				drastically affect the accuracy of the forecast. See
				“FORECAST CALIBRATION” to learn how you
				may fine tune and improve the accuracy of the
				forecasting feature.

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