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6.9.2.1 Calibration Order:
Indoor temperature offset calibrated (range +/-9F, default: 0 degrees)
Indoor humidity offset calibrated (range +/-10%)
Outdoor temperature offset calibrated (range +/-9F, default: 0 degrees)
Outdoor humidity offset calibrated (range +/-10%)
Absolute pressure offset calibrated (range +/-50hpa)
Wind direction offset calibrated (adjust by degree)
Wind speed factor adjust, default 100% (range50% to 150%)
Rain factor adjust, default 100% (range50% to 150%)
Daily rainfall calibration (range 0~9999mm)
Monthly rainfall calibration (range 0~9999mm)
Weekly rainfall calibration (range 0~9999mm)
Yearly rainfall calibration (range 0~9999mm)
Total rainfall calibration (range 0~9999mm)
Light factor adjust, default 100% (range30% to 250%)
UVI factor adjust, default 100% (range30% to 250%)
6.9.3 Calibration Discussion
The purpose of calibration is to fine tune or correct for any sensor error
associated with the devices margin of error. Errors can occur due to
electronic variation (example, the temperature sensor is a resistive thermal
device or RTD, the humidity sensor is a capacitance device), mechanical
variation, or degradation (wearing of moving parts, contamination of
sensors).
Calibration is only useful if you have a known calibrated source you can
compare it against, and is optional. This section discusses practices,
procedures and sources for sensor calibration to reduce manufacturing and
degradation errors. Do not compare your readings obtained from sources
such as the internet, radio, television or newspapers. The purpose of your
weather station is to measure conditions of your surroundings, which vary
significantly from location to location.