Optional Calibration Of Sensor - Raddy WF-100C LITE Benutzerhandbuch

Note: Humidity is a difficult parameter to measure accurately and drifts over time.
The calibration feature allows you to zero out this error. To calibrate humidity, you
will need an accurate source, such as a sling psychrometer or Humidipaks One Step
Calibration kit.

9.6.3 Optional Calibration of Sensor

1) Step by Step Guide
press and hold the SET and ALARM buttons at the same time for five seconds to
enter the barometer, wind speed, rainfall calibration mode. To skip over a parameter,
press the SET button. The word CAL will appear at the bottom of the screen.
2) Absolute Pressure Calibration
In the calibration mode, the "ABS" symbol will display at the PRESSURE section, the
absolute pressure offset will flash. The default offset is 0.00 inHg.
Press the CHANNEL/+ or MAX/MIN/- button to increase or decrease the absolute
pressure offset.
Press and hold the CHANNEL/+ or MAX/MIN/- button for three seconds to increase
or decrease rapidly.
Press the ALARM button to reset current value
Example: The calibrated pressure source measures 28.00 inHg. The display
absolute pressure reads 28.83 inHg on the console.
Offset = 28.00 – 28.83 = 0.83 inHg.
3) Relative Pressure Calibration
In the calibration mode, press the SET button once, the "REL" symbol will display at
the PRESSURE section, the relative pressure offset will flash. The default is 0.00
inHg
Press the CHANNEL/+ or MAX/MIN/- button to increase or decrease the relative
pressure offset.
Press and hold the CHANNEL/+ or MAX/MIN/- button for three seconds to increase
or decrease rapidly.
Press the ALARM button to reset current value.
Example: The local official barometer measures 30.00 inHg. The display relative
pressure reads 29.92 inHg on the console.
Offset = 30.00 – 29.92 = 0.08 inHg.
Note: The display console displays two different pressures: absolute (measured)
and relative (corrected to sea-level).
To compare pressure conditions from one location to another, meteorologists correct
pressure to sea-level conditions. Because the air pressure decreases as you rise in
altitude, the sea-level corrected pressure (the pressure your location would be at if
located at sea-level) is generally higher than your measured pressure.
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