To return the humidity to the actual or uncalibrated measurement,
press the
ADJUST
button.
Once the displayed humidity equals the calibrated source, press and
hold the ADJUST button for three seconds, or wait 15 seconds for
timeout, and the humidity value will stop flashing.
Discussion
: Humidity is a difficult parameter to measure
electronically and drifts over time due to contamination. In addition,
location has an adverse affect on humidity readings (installation over
dirt vs. lawn for example).
5.7.2 Temperature Calibration
Prior to entering the calibration mode, press the
C
button to
select the temperature you wish to adjust.
To enter the temperature calibration mode, press and hold the
ALARM/ADJUST and C
buttons at the same time for 5
seconds and the temperature value will begin flashing. Press the
C
button to increase the temperature and the
MIN/MAX/-
button to decrease the temperature reading in 0.1° increments. To
rapidly increase (or decrease) the temperature reading, press and hold
the
C
or
MINMAX/-
button.
To return the temperature to the actual or uncalibrated measurement,
press the
ADJUST
button.
Once the displayed temperature equals the calibrated source, press
and hold the
ADJUST
button for three seconds, or wait 15 seconds for
timeout, and the temperature value will stop flashing.
Discussion
: Temperature errors can occur when a sensor is
placed too close to a heat source (such as a building structure, the
ground or trees).
To calibrate temperature, we recommend a mercury or red spirit (fluid)
thermometer. Bi-metal (dial) and other digital thermometers are not a
good source and have their own margin of error. Using a local weather
station in your area is also a poor source due to changes in location,
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