Version 1.29 ©Copyright 2022, Ambient LLC. All Rights Reserved. Page 30
Thus, your absolute pressure may read 28.62 inHg (969 mb) at an altitude of 1000 feet (305 m), but the relative pressure
is 30.00 inHg (1016 mb).
The standard sea-level pressure is 29.92 inHg (1013 mb). This is the average sea-level pressure around the world. Relative
pressure measurements greater than 29.92 inHg (1013 mb) are considered high pressure and relative pressure
measurements less than 29.92 inHg are considered low pressure.
To determine the relative pressure for your location, locate your local “official” barometric pressure reading on
www.AmbientWeather.net/baro or scan the QR code below. To access the relative pressure calibration screen of your
console, see Section 13.8.1 / Figure 25 to enter the value.
Note: The calibration setting is saved until the console is factory reset. If the console location/elevation changes, it
will need to be recalibrated.
13.3 Rain Display
13.3.1 Rain Increments of Measure
Press the [RAIN] button to switch between Rain Rate (in/hr), Rain Event, Rain Day, Rain Week, Rain Month, and Rain
Year, Rain Total.
13.3.2 Resetting Rain
Display the increment of rain you wish to clear, as shown in Section 13.3.1.
To reset the rain totals, press and hold the [RAIN] button for two seconds.
• Resetting the weekly rain also resets the daily rain.
• Resetting the monthly rain also resets the daily and weekly rain.
• Resetting the Yearly total rain also resets the monthly, weekly, and daily rain.
• Resetting the total rain also resets the monthly, weekly, daily, and yearly rain.
13.3.3 Increments of Rain Definitions
• Rain rate or hourly rain is defined as the last 10 minutes of rainfall, multiplied by six (10 minutes x 6 = 1 hour).
This is also referred to as instantaneous rain per hour.
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