dr. Tech WH1170, Инструкция по эксплуатации

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Note: The remote (outdoor) thermo-hygrometer will always display the measured
humidity level and not the calibrated humidity level. Only the console will show the
calibrated value.
Note: The dew point calculation is based on the calibrated humidity level.
5.2.2 Setting Calibrated Temperature
Temperature is measured by a resistive thermal device (RTD) and is subject to
electronic variation.
Temperature errors can also occur when a sensor is placed too close to a heat source
(such as a building structure, the ground or trees).
To calibrate the indoor or outdoor temperature, we recommend a mercury or red spirit
(fluid) thermometer. Bi-metal (dia) 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, timing (airport weather stations are
only updated once per hour) and possible calibration errors (many official weather
stations are not properly installed and calibrated).
Place the sensor in a shaded, controlled environment next to the fluid thermometer,
and allow the sensor to stabilize for 24 hours. Compare this temperature to the fluid
thermometer and adjust the console to match the fluid thermometer.
To calibrate indoor or outdoor temperature, in the Set Mode with indoor or outdoor
temperature flashing, press the + key or MIN/MAX key to increase or decrease the
temperature setting (in increments of 0.1 degC or 0.18 degF) to match the calibrated
or known temperature source.
Note: The remote (outdoor) thermo-hygrometer will always display the measured
temperature level and not the calibrated temperature level. Only the console will show
the calibrated value.
Note: The dew point calculation is based on the calibrated temperature level.
5.2.3 Setting Barometric Pressure
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.
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).